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Diffstat (limited to 'website/static/security/patches/EN-22:14/tzdata-2022a.patch')
| -rw-r--r-- | website/static/security/patches/EN-22:14/tzdata-2022a.patch | 3142 |
1 files changed, 3142 insertions, 0 deletions
diff --git a/website/static/security/patches/EN-22:14/tzdata-2022a.patch b/website/static/security/patches/EN-22:14/tzdata-2022a.patch new file mode 100644 index 0000000000..b7a6f868e7 --- /dev/null +++ b/website/static/security/patches/EN-22:14/tzdata-2022a.patch @@ -0,0 +1,3142 @@ +--- contrib/tzdata/CONTRIBUTING.orig ++++ contrib/tzdata/CONTRIBUTING +@@ -1,50 +1,58 @@ +-Contributing to the tz code and data ++# Contributing to the tz code and data ++ ++Please do not create issues or pull requests on GitHub, as the ++proper procedure for proposing and distributing patches is via ++email as described below. + + The time zone database is by no means authoritative: governments + change timekeeping rules erratically and sometimes with little + warning, the data entries do not cover all of civil time before + 1970, and undoubtedly errors remain in the code and data. Feel + free to fill gaps or fix mistakes, and please email improvements +-to tz@iana.org for use in the future. In your email, please give ++to <tz@iana.org> for use in the future. In your email, please give + reliable sources that reviewers can check. + +------ +- +-Developers can contribute technical changes to the source code and +-data as follows. ++## Contributing technical changes + + To email small changes, please run a POSIX shell command like + 'diff -u old/europe new/europe >myfix.patch', and attach +-myfix.patch to the email. ++'myfix.patch' to the email. + + For more-elaborate or possibly-controversial changes, + such as renaming, adding or removing zones, please read +-<https://www.iana.org/time-zones/repository/theory.html> or the file +-theory.html. It is also good to browse the mailing list archives ++"Theory and pragmatics of the tz code and data" ++<https://www.iana.org/time-zones/repository/theory.html>. ++It is also good to browse the mailing list archives + <https://mm.icann.org/pipermail/tz/> for examples of patches that tend + to work well. Additions to data should contain commentary citing +-reliable sources as justification. Citations should use https: URLs ++reliable sources as justification. Citations should use "https:" URLs + if available. + +-Please submit changes against either the latest release in +-<https://www.iana.org/time-zones> or the master branch of the development +-repository. The latter is preferred. If you use Git the following +-workflow may be helpful: ++For changes that fix sensitive security-related bugs, please see the ++distribution's 'SECURITY' file. ++ ++Please submit changes against either the latest release ++<https://www.iana.org/time-zones> or the main branch of the development ++repository. The latter is preferred. ++ ++## Sample Git workflow for developing contributions ++ ++If you use Git the following workflow may be helpful: + + * Copy the development repository. + +- git clone https://github.com/eggert/tz.git +- cd tz ++ git clone https://github.com/eggert/tz.git ++ cd tz + +- * Get current with the master branch. ++ * Get current with the main branch. + +- git checkout master +- git pull ++ git checkout main ++ git pull + + * Switch to a new branch for the changes. Choose a different + branch name for each change set. + +- git checkout -b mybranch ++ git checkout -b mybranch + + * Sleuth by using 'git blame'. For example, when fixing data for + Africa/Sao_Tome, if the command 'git blame africa' outputs a line +@@ -57,36 +65,33 @@ + + * Debug the changes, e.g.: + +- make check +- make install +- ./zdump -v America/Los_Angeles ++ make check ++ make install ++ ./zdump -v America/Los_Angeles + + * For each separable change, commit it in the new branch, e.g.: + +- git add northamerica +- git commit ++ git add northamerica ++ git commit + + See recent 'git log' output for the commit-message style. + +- * Create patch files 0001-*, 0002-*, ... ++ * Create patch files 0001-..., 0002-..., ... + +- git format-patch master ++ git format-patch main + +- * After reviewing the patch files, send the patches to tz@iana.org ++ * After reviewing the patch files, send the patches to <tz@iana.org> + for others to review. + +- git send-email master ++ git send-email main + + For an archived example of such an email, see ++ "[PROPOSED] Fix off-by-1 error for Jamaica and T&C before 1913" + <https://mm.icann.org/pipermail/tz/2018-February/026122.html>. + +- * Start anew by getting current with the master branch again ++ * Start anew by getting current with the main branch again + (the second step above). + +-Please do not create issues or pull requests on GitHub, as the +-proper procedure for proposing and distributing patches is via +-email as illustrated above. +- + ----- + + This file is in the public domain. +--- contrib/tzdata/Makefile.orig ++++ contrib/tzdata/Makefile +@@ -45,9 +45,9 @@ + # + # Any other value for POSIXRULES is obsolete and should not be relied on, as: + # * It does not work correctly in popular implementations such as GNU/Linux. +-# * It does not work in the tzdb implementation for timestamps after 2037. +-# * It is incompatible with 'zic -b slim' if POSIXRULES specifies transitions +-# at standard time or UT rather than at local time. ++# * It does not work even in tzcode, except for historical timestamps ++# that precede the last explicit transition in the POSIXRULES file. ++# Hence it typically does not work for current and future timestamps. + # In short, software should avoid ruleless settings like TZ='EET-2EEST' + # and so should not depend on the value of POSIXRULES. + # +@@ -122,8 +122,8 @@ + + # Types to try, as an alternative to time_t. + TIME_T_ALTERNATIVES = $(TIME_T_ALTERNATIVES_HEAD) $(TIME_T_ALTERNATIVES_TAIL) +-TIME_T_ALTERNATIVES_HEAD = int64_t +-TIME_T_ALTERNATIVES_TAIL = int32_t uint32_t uint64_t ++TIME_T_ALTERNATIVES_HEAD = int_least64_t ++TIME_T_ALTERNATIVES_TAIL = int_least32_t uint_least32_t uint_least64_t + + # What kind of TZif data files to generate. (TZif is the binary time + # zone data format that zic generates; see Internet RFC 8536.) +@@ -152,8 +152,10 @@ + # The EXPIRES_LINE value matters only if REDO's value contains "right". + # If you change EXPIRES_LINE, remove the leapseconds file before running "make". + # zic's support for the Expires line was introduced in tzdb 2020a, +-# and EXPIRES_LINE defaults to 0 for now so that the leapseconds file +-# can be given to older zic implementations. ++# and was modified in tzdb 2021b to generate version 4 TZif files. ++# EXPIRES_LINE defaults to 0 for now so that the leapseconds file ++# can be given to pre-2020a zic implementations and so that TZif files ++# built by newer zic implementations can be read by pre-2021b libraries. + EXPIRES_LINE= 0 + + # To install data in text form that has all the information of the TZif data, +@@ -210,6 +212,7 @@ + # -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function + # -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz + # localtime_rz can make zdump significantly faster, but is nonstandard. ++# -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure. + # -DHAVE_POSIX_DECLS=0 if your system's include files do not declare + # functions like 'link' or variables like 'tzname' required by POSIX + # -DHAVE_SNPRINTF=0 if your system lacks the snprintf function +@@ -220,7 +223,6 @@ + # -DHAVE_STRTOLL=0 if your system lacks the strtoll function + # -DHAVE_SYMLINK=0 if your system lacks the symlink function + # -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h> +-# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a <sys/wait.h> + # -DHAVE_TZSET=0 if your system lacks a tzset function + # -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h> + # -Dlocale_t=XXX if your system uses XXX instead of locale_t +@@ -257,22 +259,26 @@ + GCC_INSTRUMENT = \ + -fsanitize=undefined -fsanitize-address-use-after-scope \ + -fsanitize-undefined-trap-on-error -fstack-protector ++# Omit -fanalyzer from GCC_DEBUG_FLAGS, as it makes GCC too slow. + GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ + $(GCC_INSTRUMENT) \ + -Wall -Wextra \ + -Walloc-size-larger-than=100000 -Warray-bounds=2 \ + -Wbad-function-cast -Wcast-align=strict -Wdate-time \ + -Wdeclaration-after-statement -Wdouble-promotion \ ++ -Wduplicated-branches -Wduplicated-cond \ + -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ +- -Winit-self -Wjump-misses-init -Wlogical-op \ ++ -Winit-self -Wlogical-op \ + -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ ++ -Wnull-dereference \ + -Wold-style-definition -Woverlength-strings -Wpointer-arith \ +- -Wshadow -Wshift-overflow=2 -Wstrict-prototypes -Wstringop-overflow=4 \ ++ -Wshadow -Wshift-overflow=2 -Wstrict-overflow \ ++ -Wstrict-prototypes -Wstringop-overflow=4 \ + -Wstringop-truncation -Wsuggest-attribute=cold \ + -Wsuggest-attribute=const -Wsuggest-attribute=format \ + -Wsuggest-attribute=malloc \ + -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ +- -Wtrampolines -Wundef -Wuninitialized -Wunused \ ++ -Wtrampolines -Wundef -Wuninitialized -Wunused-macros \ + -Wvariadic-macros -Wvla -Wwrite-strings \ + -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ + -Wno-type-limits -Wno-unused-parameter +@@ -393,9 +399,10 @@ + ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS) + + # The name of a Posix-compliant 'awk' on your system. +-# Older 'mawk' versions, such as the 'mawk' in Ubuntu 16.04, might dump core; +-# on Ubuntu you can work around this with +-# AWK= gawk ++# mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work. ++# Also, it is better (though not essential) if 'awk' supports UTF-8, ++# and unfortunately mawk and busybox awk do not support UTF-8. ++# Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems. + AWK= awk + + # The full path name of a Posix-compliant shell, preferably one that supports +@@ -460,7 +467,9 @@ + + # Flags to give 'tar' when making a distribution. + # Try to use flags appropriate for GNU tar. +-GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w --sort=name ++GNUTARFLAGS= --format=pax --pax-option='delete=atime,delete=ctime' \ ++ --numeric-owner --owner=0 --group=0 \ ++ --mode=go+u,go-w --sort=name + TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \ + then echo $(GNUTARFLAGS); \ + else :; \ +@@ -498,7 +507,7 @@ + tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \ + date.1.txt + COMMON= calendars CONTRIBUTING LICENSE Makefile \ +- NEWS README theory.html version ++ NEWS README SECURITY theory.html version + WEB_PAGES= tz-art.html tz-how-to.html tz-link.html + CHECK_WEB_PAGES=check_theory.html check_tz-art.html \ + check_tz-how-to.html check_tz-link.html +@@ -523,7 +532,7 @@ + TZS_CUTOFF_FLAG= -c $(TZS_YEAR) + TZS= to$(TZS_YEAR).tzs + TZS_NEW= to$(TZS_YEAR)new.tzs +-TZS_DEPS= $(PRIMARY_YDATA) asctime.c localtime.c \ ++TZS_DEPS= $(YDATA) asctime.c localtime.c \ + private.h tzfile.h zdump.c zic.c + # EIGHT_YARDS is just a yard short of the whole ENCHILADA. + EIGHT_YARDS = $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) tzdata.zi +@@ -533,7 +542,7 @@ + # This list is not the same as the output of 'git ls-files', since + # .gitignore is not distributed. + VERSION_DEPS= \ +- calendars CONTRIBUTING LICENSE Makefile NEWS README \ ++ calendars CONTRIBUTING LICENSE Makefile NEWS README SECURITY \ + africa antarctica asctime.c asia australasia \ + backward backzone \ + checklinks.awk checktab.awk \ +@@ -736,7 +745,7 @@ + tzselect: tzselect.ksh version + VERSION=`cat version` && sed \ + -e 's|#!/bin/bash|#!$(KSHELL)|g' \ +- -e 's|AWK=[^}]*|AWK=$(AWK)|g' \ ++ -e 's|AWK=[^}]*|AWK='\''$(AWK)'\''|g' \ + -e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \ + -e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \ + -e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \ +@@ -757,7 +766,7 @@ + sharp='#' && \ + ! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \ + $(MISC) $(SOURCES) $(WEB_PAGES) \ +- CONTRIBUTING LICENSE README \ ++ CONTRIBUTING LICENSE README SECURITY \ + version tzdata.zi && \ + ! grep -Env $(SAFE_LINE)'|^UNUSUAL_OK_'$(OK_CHAR)'*$$' \ + Makefile && \ +@@ -796,9 +805,10 @@ + $(AWK) -f checklinks.awk tzdata.zi + touch $@ + +-check_tables: checktab.awk $(PRIMARY_YDATA) $(ZONETABLES) ++check_tables: checktab.awk $(YDATA) backward $(ZONETABLES) + for tab in $(ZONETABLES); do \ +- $(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \ ++ test "$$tab" = zone.tab && links='$(BACKWARD)' || links=''; \ ++ $(AWK) -f checktab.awk -v zone_table=$$tab $(YDATA) $$links \ + || exit; \ + done + touch $@ +@@ -952,6 +962,12 @@ + public.dir/zic -v -d public.dir/zoneinfo $$i 2>&1 || exit; \ + done + public.dir/zic -v -d public.dir/zoneinfo-all $(TDATA_TO_CHECK) ++ : ++ : Also check 'backzone' syntax. ++ rm public.dir/main.zi ++ cd public.dir && $(MAKE) PACKRATDATA=backzone main.zi ++ public.dir/zic -d public.dir/zoneinfo main.zi ++ : + rm -fr public.dir + touch $@ + +@@ -964,7 +980,7 @@ + mkdir $@.dir + ln $(VERSION_DEPS) $@.dir + case $@ in \ +- int32_t) range=-2147483648,2147483648;; \ ++ int*32_t) range=-2147483648,2147483648;; \ + u*) range=0,4294967296;; \ + *) range=-4294967296,4294967296;; \ + esac && \ +--- contrib/tzdata/NEWS.orig ++++ contrib/tzdata/NEWS +@@ -1,5 +1,351 @@ + News for the tz database + ++Release 2022a - 2022-03-15 23:02:01 -0700 ++ ++ Briefly: ++ Palestine will spring forward on 2022-03-27, not -03-26. ++ zdump -v now outputs better failure indications. ++ Bug fixes for code that reads corrupted TZif data. ++ ++ Changes to future timestamps ++ ++ Palestine will spring forward on 2022-03-27, not 2022-03-26. ++ (Thanks to Heba Hamad.) Predict future transitions for first ++ Sunday >= March 25. Additionally, predict fallbacks to be the first ++ Friday on or after October 23, not October's last Friday, to be more ++ consistent with recent practice. The first differing fallback ++ prediction is on 2025-10-24, not 2025-10-31. ++ ++ Changes to past timestamps ++ ++ From 1992 through spring 1996, Ukraine's DST transitions were at ++ 02:00 standard time, not at 01:00 UTC. (Thanks to Alois Treindl.) ++ ++ Chile's Santiago Mean Time and its LMT precursor have been adjusted ++ eastward by 1 second to align with past and present law. ++ ++ Changes to commentary ++ ++ Add several references for Chile's 1946/1947 transitions, some of ++ which only affected portions of the country. ++ ++ Changes to code ++ ++ Fix bug when mktime gets confused by truncated TZif files with ++ unspecified local time. (Problem reported by Almaz Mingaleev.) ++ ++ Fix bug when 32-bit time_t code reads malformed 64-bit TZif data. ++ (Problem reported by Christos Zoulas.) ++ ++ When reading a version 2 or later TZif file, the TZif reader now ++ validates the version 1 header and data block only enough to skip ++ over them, as recommended by RFC 8536 section 4. Also, the TZif ++ reader no longer mistakenly attempts to parse a version 1 TZIf ++ file header as a TZ string. ++ ++ zdump -v now outputs "(localtime failed)" and "(gmtime failed)" ++ when local time and UT cannot be determined for a timestamp. ++ ++ Changes to build procedure ++ ++ Distribution tarballs now use standard POSIX.1-1988 ustar format ++ instead of GNU format. Although the formats are almost identical ++ for these tarballs, ustar headers' magic fields contain "ustar" ++ instead of "ustar ", and their version fields contain "00" instead ++ of " ". The two formats are planned to diverge more significantly ++ for tzdb releases after 2242-03-16 12:56:31 UTC, when the ustar ++ format becomes obsolete and the tarballs switch to pax format, an ++ extension of ustar. For details about these formats, please see ++ "pax - portable archive interchange", IEEE Std 1003.1-2017, ++ <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html#tag_20_92_13>. ++ ++ ++Release 2021e - 2021-10-21 18:41:00 -0700 ++ ++ Changes to future timestamps ++ ++ Palestine will fall back 10-29 (not 10-30) at 01:00. ++ (Thanks to P Chan and Heba Hemad.) ++ ++ ++Release 2021d - 2021-10-15 13:48:18 -0700 ++ ++ Briefly: ++ Fiji suspends DST for the 2021/2022 season. ++ 'zic -r' marks unspecified timestamps with "-00". ++ ++ Changes to future timestamps ++ ++ Fiji will suspend observance of DST for the 2021/2022 season. ++ Assume for now that it will return next year. (Thanks to Jashneel ++ Kumar and P Chan.) ++ ++ Changes to code ++ ++ 'zic -r' now uses "-00" time zone abbreviations for intervals ++ with UT offsets that are unspecified due to -r truncation. ++ This implements a change in draft Internet RFC 8536bis. ++ ++ ++Release 2021c - 2021-10-01 14:21:49 -0700 ++ ++ Briefly: ++ Revert most 2021b changes to 'backward'. ++ Fix 'zic -b fat' bug in pre-1970 32-bit data. ++ Fix two Link line typos. ++ Distribute SECURITY file. ++ ++ This release is intended as a bugfix release, to fix compatibility ++ problems and typos reported since 2021b was released. ++ ++ Changes to Link directives ++ ++ Revert almost all of 2021b's changes to the 'backward' file, ++ by moving Link directives back to where they were in 2021a. ++ Although 'zic' doesn't care which source file contains a Link ++ directive, some downstream uses ran into trouble with the move. ++ (Problem reported by Stephen Colebourne for Joda-Time.) ++ ++ Fix typo that linked Atlantic/Jan_Mayen to the wrong location ++ (problem reported by Chris Walton). ++ ++ Fix 'backzone' typo that linked America/Virgin to the wrong ++ location (problem reported by Michael Deckers). ++ ++ Changes to code ++ ++ Fix a bug in 'zic -b fat' that caused old timestamps to be ++ mishandled in 32-bit-only readers (problem reported by Daniel ++ Fischer). ++ ++ Changes to documentation ++ ++ Distribute the SECURITY file (problem reported by Andreas Radke). ++ ++ ++Release 2021b - 2021-09-24 16:23:00 -0700 ++ ++ Briefly: ++ Jordan now starts DST on February's last Thursday. ++ Samoa no longer observes DST. ++ Merge more location-based Zones whose timestamps agree since 1970. ++ Move some backward-compatibility links to 'backward'. ++ Rename Pacific/Enderbury to Pacific/Kanton. ++ Correct many pre-1993 transitions in Malawi, Portugal, etc. ++ zic now creates each output file or link atomically. ++ zic -L no longer omits the POSIX TZ string in its output. ++ zic fixes for truncation and leap second table expiration. ++ zic now follows POSIX for TZ strings using all-year DST. ++ Fix some localtime crashes and bugs in obscure cases. ++ zdump -v now outputs more-useful boundary cases. ++ tzfile.5 better matches a draft successor to RFC 8536. ++ A new file SECURITY. ++ ++ This release is prompted by recent announcements by Jordan and Samoa. ++ It incorporates many other changes that had accumulated since 2021a. ++ However, it omits most proposed changes that merged all Zones ++ agreeing since 1970, as concerns were raised about doing too many of ++ these changes at once. It does keeps some of these changes in the ++ interest of making tzdb more equitable one step at a time; see ++ "Merge more location-based Zones" below. ++ ++ Changes to future timestamps ++ ++ Jordan now starts DST on February's last Thursday. ++ (Thanks to Steffen Thorsen.) ++ ++ Samoa no longer observes DST. (Thanks to Geoffrey D. Bennett.) ++ ++ Changes to zone name ++ ++ Rename Pacific/Enderbury to Pacific/Kanton. When we added ++ Enderbury in 1993, we did not know that it is uninhabited and that ++ Kanton (population two dozen) is the only inhabited location in ++ that timezone. The old name is now a backward-compatility link. ++ ++ Changes to past timestamps ++ ++ Correct many pre-1993 transitions, fixing entries originally ++ derived from Shanks, Whitman, and Mundell. The fixes include: ++ - Barbados: standard time was introduced in 1911, not 1932; and ++ DST was observed in 1942-1944 ++ - Cook Islands: In 1899 they switched from east to west of GMT, ++ celebrating Christmas for two days. They (and Niue) switched ++ to standard time in 1952, not 1901. ++ - Guyana: corrected LMT for Georgetown; the introduction of ++ standard time in 1911, not 1915; and corrections to 1975 and ++ 1992 transitions ++ - Kanton: uninhabited before 1937-08-31 ++ - Niue: only observed -11:20 from 1952 through 1964, then went to ++ -11 instead of -11:30 ++ - Portugal: DST was observed in 1950 ++ - Tonga: corrected LMT; the introduction of standard time in 1945, ++ not 1901; and corrections to the transition from +12:20 to +13 ++ in 1961, not 1941 ++ Additional fixes to entries in the 'backzone' file include: ++ - Enderbury: inhabited only 1860/1885 and 1938-03-06/1942-02-09 ++ - The Gambia: 1933 and 1942 transitions ++ - Malawi: several 1911 through 1925 transitions ++ - Sierra Leone: several 1913 through 1941 transitions, and DST ++ was NOT observed in 1957 through 1962 ++ (Thanks to P Chan, Michael Deckers, Alexander Krivenyshev and ++ Alois Treindl.) ++ ++ Merge more location-based Zones whose timestamps agree since 1970, ++ as pre-1970 timestamps are out of scope. This is part of a ++ process that has been ongoing since 2013. This does not affect ++ post-1970 timestamps, and timezone historians who build with 'make ++ PACKRATDATA=backzone' should see no changes to pre-1970 timestamps. ++ When merging, keep the most-populous location's data, and move ++ data for other locations to 'backzone' with a backward ++ link in 'backward'. For example, move America/Creston data to ++ 'backzone' with a link in 'backward' from America/Phoenix because ++ the two timezones' timestamps agree since 1970; this change ++ affects some pre-1968 timestamps in America/Creston because ++ Creston and Phoenix disagreed before 1968. The affected Zones ++ are Africa/Accra, America/Atikokan, America/Blanc-Sablon, ++ America/Creston, America/Curacao, America/Nassau, ++ America/Port_of_Spain, Antarctica/DumontDUrville, and ++ Antarctica/Syowa. ++ ++ Changes to maintenance procedure ++ ++ The new file SECURITY covers how to report security-related bugs. ++ ++ Several backward-compatibility links have been moved to the ++ 'backward' file. These links, which range from Africa/Addis_Ababa ++ to Pacific/Saipan, are only for compatibility with now-obsolete ++ guidelines suggesting an entry for every ISO 3166 code. ++ The intercontinental convenience links Asia/Istanbul and ++ Europe/Nicosia have also been moved to 'backward'. ++ ++ Changes to code ++ ++ zic now creates each output file or link atomically, ++ possibly by creating a temporary file and then renaming it. ++ This avoids races where a TZ setting would temporarily stop ++ working while zic was installing a replacement file or link. ++ ++ zic -L no longer omits the POSIX TZ string in its output. ++ Starting with 2020a, zic -L truncated its output according to the ++ "Expires" directive or "#expires" comment in the leapseconds file. ++ The resulting TZif files omitted daylight saving transitions after ++ the leap second table expired, which led to far less-accurate ++ predictions of times after the expiry. Although future timestamps ++ cannot be converted accurately in the presence of leap seconds, it ++ is more accurate to convert near-future timestamps with a few ++ seconds error than with an hour error, so zic -L no longer ++ truncates output in this way. ++ ++ Instead, when zic -L is given the "Expires" directive, it now ++ outputs the expiration by appending a no-change entry to the leap ++ second table. Although this should work well with most TZif ++ readers, it does not conform to Internet RFC 8536 and some pickier ++ clients (including tzdb 2017c through 2021a) reject it, so ++ "Expires" directives are currently disabled by default. To enable ++ them, set the EXPIRES_LINE Makefile variable. If a TZif file uses ++ this new feature it is marked with a new TZif version number 4, ++ a format intended to be documented in a successor to RFC 8536. ++ ++ zic -L LEAPFILE -r @LO no longer generates an invalid TZif file ++ that omits leap second information for the range LO..B when LO ++ falls between two leap seconds A and B. Instead, it generates a ++ TZif version 4 file that represents the previously-missing ++ information. ++ ++ The TZif reader now allows the leap second table to begin with a ++ correction other than -1 or +1, and to contain adjacent ++ transitions with equal corrections. This supports TZif version 4. ++ ++ The TZif reader now lets leap seconds occur less than 28 days ++ apart. This supports possible future TZif extensions. ++ ++ Fix bug that caused 'localtime' etc. to crash when TZ was ++ set to a all-year DST string like "EST5EDT4,0/0,J365/25" that does ++ not conform to POSIX but does conform to Internet RFC 8536. ++ ++ Fix another bug that caused 'localtime' etc. to crash when TZ was ++ set to a POSIX-conforming but unusual TZ string like ++ "EST5EDT4,0/0,J365/0", where almost all the year is DST. ++ ++ Fix yet another bug that caused 'localtime' etc. to mishandle slim ++ TZif files containing leap seconds after the last explicit ++ transition in the table, or when handling far-future timestamps ++ in slim TZif files lacking leap seconds. ++ ++ Fix localtime misbehavior involving positive leap seconds. ++ This change affects only behavior for "right" system time, ++ which contains leap seconds, and only if the UT offset is ++ not a multiple of 60 seconds when a positive leap second occurs. ++ (No such timezone exists in tzdb, luckily.) Without the fix, ++ the timestamp was ambiguous during a positive leap second. ++ With the fix, any seconds occurring after a positive leap second ++ and within the same localtime minute are counted through 60, not ++ through 59; their UT offset (tm_gmtoff) is the same as before. ++ Here is how the fix affects timestamps in a timezone with UT ++ offset +01:23:45 (5025 seconds) and with a positive leap second at ++ 1972-06-30 23:59:60 UTC (78796800): ++ ++ time_t without the fix with the fix ++ 78796800 1972-07-01 01:23:45 1972-07-01 01:23:45 (leap second) ++ 78796801 1972-07-01 01:23:45 1972-07-01 01:23:46 ++ ... ++ 78796815 1972-07-01 01:23:59 1972-07-01 01:23:60 ++ 78796816 1972-07-01 01:24:00 1972-07-01 01:24:00 ++ ++ Fix an unlikely bug that caused 'localtime' etc. to misbehave if ++ civil time changes a few seconds before time_t wraps around, when ++ leap seconds are enabled. ++ ++ Fix bug in zic -r; in some cases, the dummy time type after the ++ last time transition disagreed with the TZ string, contrary to ++ Internet RFC 8563 section 3.3. ++ ++ Fix a bug with 'zic -r @X' when X is a negative leap second that ++ has a nonnegative correction. Without the fix, the output file ++ was truncated so that X appeared to be a positive leap second. ++ Fix a similar, even-less-likely bug when truncating at a positive ++ leap second that has a nonpositive correction. ++ ++ zic -r now reports an error if given rolling leap seconds, as this ++ usage has never generally worked and is evidently unused. ++ ++ zic now generates a POSIX-conforming TZ string for TZif files ++ where all-year DST is predicted for the indefinite future. ++ For example, for all-year Eastern Daylight Time, zic now generates ++ "XXX3EDT4,0/0,J365/23" where it previously generated ++ "EST5EDT,0/0,J365/25" or "". (Thanks to Michael Deckers for ++ noting the possibility of POSIX conformance.) ++ ++ zic.c no longer requires sys/wait.h (thanks to spazmodius for ++ noting it wasn't needed). ++ ++ When reading slim TZif files, zdump no longer mishandles leap ++ seconds on the rare platforms where time_t counts leap seconds, ++ fixing a bug introduced in 2014g. ++ ++ zdump -v now outputs timestamps at boundaries of what localtime ++ and gmtime can represent, instead of the less-useful timestamps ++ one day after the minimum and one day before the maximum. ++ (Thanks to Arthur David Olson for prototype code, and to Manuela ++ Friedrich for debugging help.) ++ ++ zdump's -c and -t options are now consistently inclusive for the ++ lower time bound and exclusive for the upper. Formerly they were ++ inconsistent. (Confusion noted by Martin Burnicki.) ++ ++ Changes to build procedure ++ ++ You can now compile with -DHAVE_MALLOC_ERRNO=0 to port to ++ non-POSIX hosts where malloc doesn't set errno. ++ (Problem reported by Jan Engelhardt.) ++ ++ Changes to documentation ++ ++ tzfile.5 better matches a draft successor to RFC 8536 ++ <https://datatracker.ietf.org/doc/draft-murchison-rfc8536bis/01/>. ++ ++ + Release 2021a - 2021-01-24 10:54:57 -0800 + + Changes to future timestamps +@@ -31,7 +377,7 @@ + Correct many pre-1986 transitions, fixing entries originally + derived from Shanks. The fixes include: + - Australia: several 1917 through 1971 transitions +- - Bahamas: several 1941 through 1945 transitions ++ - The Bahamas: several 1941 through 1945 transitions + - Bermuda: several 1917 through 1956 transitions + - Belize: several 1942 through 1968 transitions + - Ghana: several 1915 through 1956 transitions +@@ -287,13 +633,13 @@ + probably wrong.) + + Fix several errors in pre-1970 transitions in Perry County, IN. +- (Thanks to Alois Triendl for pointing out the 1967/9 errors.) ++ (Thanks to Alois Treindl for pointing out the 1967/9 errors.) + + Edmonton did not observe DST in 1967 or 1969. In 1946 Vancouver + ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not + 10-06. In 1945 Königsberg (now Kaliningrad) switched from +01/+02 + to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated +- EET/EEST, not CET/CEST. (Thanks to Alois Triendl.) In 1946 ++ EET/EEST, not CET/CEST. (Thanks to Alois Treindl.) In 1946 + Königsberg switched to +03 on 04-07 not 01-01. + + In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not +@@ -825,8 +1171,8 @@ + Institute in Montevideo. + (Thanks to Jeremie Bonjour, Tim Parenti, and Michael Deckers.) + +- Enderbury and Kiritimati skipped New Year's Eve 1994, not +- New Year's Day 1995. (Thanks to Kerry Shetline.) ++ East Kiribati skipped New Year's Eve 1994, not New Year's Day 1995. ++ (Thanks to Kerry Shetline.) + + Fix the 1912-01-01 transition for Portugal and its colonies. + This transition was at 00:00 according to the new UT offset, not +--- /dev/null ++++ contrib/tzdata/SECURITY +@@ -0,0 +1,15 @@ ++Please report any sensitive security-related bugs via email to the ++tzdb designated coordinators, currently Paul Eggert ++<eggert@cs.ucla.edu> and Tim Parenti <tim@timtimeonline.com>. ++Put "tzdb security" at the start of your email's subject line. ++We prefer communications to be in English. ++ ++You should receive a response within a week. If not, please follow up ++via email to make sure we received your original message. ++ ++If we confirm the bug, we plan to notify affected third-party services ++or software that we know about, prepare an advisory, commit fixes to ++the main development branch as quickly as is practical, and finally ++publish the advisory on tz@iana.org. As with all tzdb contributions, ++we give credit to security contributors unless they wish to remain ++anonymous. +--- contrib/tzdata/africa.orig ++++ contrib/tzdata/africa +@@ -30,9 +30,6 @@ + # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. + # https://www.jstor.org/stable/1774359 + # +-# A reliable and entertaining source about time zones is +-# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). +-# + # European-style abbreviations are commonly used along the Mediterranean. + # For sub-Saharan Africa abbreviations were less standardized. + # Previous editions of this database used WAT, CAT, SAT, and EAT +@@ -153,8 +150,9 @@ + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Africa/Abidjan -0:16:08 - LMT 1912 + 0:00 - GMT ++Link Africa/Abidjan Africa/Accra # Ghana + Link Africa/Abidjan Africa/Bamako # Mali +-Link Africa/Abidjan Africa/Banjul # Gambia ++Link Africa/Abidjan Africa/Banjul # The Gambia + Link Africa/Abidjan Africa/Conakry # Guinea + Link Africa/Abidjan Africa/Dakar # Senegal + Link Africa/Abidjan Africa/Freetown # Sierra Leone +@@ -381,93 +379,8 @@ + # Gabon + # See Africa/Lagos. + +-# Gambia +-# See Africa/Abidjan. +- ++# The Gambia + # Ghana +- +-# From P Chan (2020-11-20): +-# Interpretation Amendment Ordinance, 1915 (No.24 of 1915) [1915-11-02] +-# Ordinances of the Gold Coast, Ashanti, Northern Territories 1915, p 69-71 +-# https://books.google.com/books?id=ErA-AQAAIAAJ&pg=PA70 +-# This Ordinance added "'Time' shall mean Greenwich Mean Time" to the +-# Interpretation Ordinance, 1876. +-# +-# Determination of the Time Ordinance, 1919 (No. 18 of 1919) [1919-11-24] +-# Ordinances of the Gold Coast, Ashanti, Northern Territories 1919, p 75-76 +-# https://books.google.com/books?id=MbA-AQAAIAAJ&pg=PA75 +-# This Ordinance removed the previous definition of time and introduced DST. +-# +-# Time Determination Ordinance (Cap. 214) +-# The Laws of the Gold Coast (including Togoland Under British Mandate) +-# Vol. II (1937), p 2328 +-# https://books.google.com/books?id=Z7M-AQAAIAAJ&pg=PA2328 +-# Revised edition of the 1919 Ordinance. +-# +-# Time Determination (Amendment) Ordinance, 1940 (No. 9 of 1940) [1940-04-06] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1940, p 22 +-# https://books.google.com/books?id=1ao-AQAAIAAJ&pg=PA22 +-# This Ordinance changed the forward transition from September to May. +-# +-# Defence (Time Determination Ordinance Amendment) Regulations, 1942 +-# (Regulations No. 6 of 1942) [1942-01-31, commenced on 1942-02-08] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1942, p 48 +-# https://books.google.com/books?id=Das-AQAAIAAJ&pg=PA48 +-# These regulations advanced the [standard] time by thirty minutes. +-# +-# Defence (Time Determination Ordinance Amendment (No.2)) Regulations, +-# 1942 (Regulations No. 28 of 1942) [1942-04-25] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1942, p 87 +-# https://books.google.com/books?id=Das-AQAAIAAJ&pg=PA87 +-# These regulations abolished DST and changed the time to GMT+0:30. +-# +-# Defence (Revocation) (No.4) Regulations, 1945 (Regulations No. 45 of +-# 1945) [1945-10-24, commenced on 1946-01-06] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1945, p 256 +-# https://books.google.com/books?id=9as-AQAAIAAJ&pg=PA256 +-# These regulations revoked the previous two sets of Regulations. +-# +-# Time Determination (Amendment) Ordinance, 1945 (No. 18 of 1945) [1946-01-06] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1945, p 69 +-# https://books.google.com/books?id=9as-AQAAIAAJ&pg=PA69 +-# This Ordinance abolished DST. +-# +-# Time Determination (Amendment) Ordinance, 1950 (No. 26 of 1950) [1950-07-22] +-# Annual Volume of the Laws of the Gold Coast: +-# Containing All Legislation Enacted During Year 1950, p 35 +-# https://books.google.com/books?id=e60-AQAAIAAJ&pg=PA35 +-# This Ordinance restored DST but with thirty minutes offset. +-# +-# Time Determination Ordinance (Cap. 264) +-# The Laws of the Gold Coast, Vol. V (1954), p 380 +-# https://books.google.com/books?id=Mqc-AQAAIAAJ&pg=PA380 +-# Revised edition of the Time Determination Ordinance. +-# +-# Time Determination (Amendment) Ordinance, 1956 (No. 21 of 1956) [1956-08-29] +-# Annual Volume of the Ordinances of the Gold Coast Enacted During the +-# Year 1956, p 83 +-# https://books.google.com/books?id=VLE-AQAAIAAJ&pg=PA83 +-# This Ordinance abolished DST. +- +-# Rule NAME FROM TO - IN ON AT SAVE LETTER/S +-Rule Ghana 1919 only - Nov 24 0:00 0:20 +0020 +-Rule Ghana 1920 1942 - Jan 1 2:00 0 GMT +-Rule Ghana 1920 1939 - Sep 1 2:00 0:20 +0020 +-Rule Ghana 1940 1941 - May 1 2:00 0:20 +0020 +-Rule Ghana 1950 1955 - Sep 1 2:00 0:30 +0030 +-Rule Ghana 1951 1956 - Jan 1 2:00 0 GMT +- +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Africa/Accra -0:00:52 - LMT 1915 Nov 2 +- 0:00 Ghana %s 1942 Feb 8 +- 0:30 - +0030 1946 Jan 6 +- 0:00 Ghana %s +- + # Guinea + # See Africa/Abidjan. + +@@ -732,7 +645,7 @@ + # See Africa/Nairobi. + + # Morocco +-# See the 'europe' file for Spanish Morocco (Africa/Ceuta). ++# See Africa/Ceuta for Spanish Morocco. + + # From Alex Krivenyshev (2008-05-09): + # Here is an article that Morocco plan to introduce Daylight Saving Time between +@@ -1005,6 +918,10 @@ + # (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) + # (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) + # (setq islamic-year (+ 1 islamic-year)))) ++# ++# From Milamber (2021-03-31, 2022-03-10), confirming these predictions: ++# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076 ++# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/ + + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule Morocco 1939 only - Sep 12 0:00 1:00 - +@@ -1382,23 +1299,21 @@ + 0:13:35 - LMT 1914 Jan 1 + 0:30 - +0030 1919 Sep 1 + 1:00 - WAT +-Link Africa/Lagos Africa/Bangui # Central African Republic +-Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo +-Link Africa/Lagos Africa/Douala # Cameroon +-Link Africa/Lagos Africa/Kinshasa # Dem. Rep. of the Congo (west) +-Link Africa/Lagos Africa/Libreville # Gabon +-Link Africa/Lagos Africa/Luanda # Angola +-Link Africa/Lagos Africa/Malabo # Equatorial Guinea +-Link Africa/Lagos Africa/Niamey # Niger +-Link Africa/Lagos Africa/Porto-Novo # Benin ++Link Africa/Lagos Africa/Bangui # Central African Republic ++Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo ++Link Africa/Lagos Africa/Douala # Cameroon ++Link Africa/Lagos Africa/Kinshasa # Dem. Rep. of the Congo (west) ++Link Africa/Lagos Africa/Libreville # Gabon ++Link Africa/Lagos Africa/Luanda # Angola ++Link Africa/Lagos Africa/Malabo # Equatorial Guinea ++Link Africa/Lagos Africa/Niamey # Niger ++Link Africa/Lagos Africa/Porto-Novo # Benin + + # Réunion + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis + 4:00 - +04 + # +-# Crozet Islands also observes Réunion time; see the 'antarctica' file. +-# + # Scattered Islands (Îles Éparses) administered from Réunion are as follows. + # The following information about them is taken from + # Îles Éparses (<http://www.outre-mer.gouv.fr/domtom/ile.htm>, 1997-07-22, +@@ -1490,8 +1405,8 @@ + Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8 + 1:30 - SAST 1903 Mar + 2:00 SA SAST +-Link Africa/Johannesburg Africa/Maseru # Lesotho +-Link Africa/Johannesburg Africa/Mbabane # Eswatini ++Link Africa/Johannesburg Africa/Maseru # Lesotho ++Link Africa/Johannesburg Africa/Mbabane # Eswatini + # + # Marion and Prince Edward Is + # scientific station since 1947 +@@ -1527,12 +1442,13 @@ + 3:00 - EAT 2017 Nov 1 + 2:00 - CAT + ++# South Sudan ++ + # From Steffen Thorsen (2021-01-18): + # "South Sudan will change its time zone by setting the clock back 1 + # hour on February 1, 2021...." + # from https://eyeradio.org/south-sudan-adopts-new-time-zone-makuei/ + +-# South Sudan + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Africa/Juba 2:06:28 - LMT 1931 + 2:00 Sudan CA%sT 2000 Jan 15 12:00 +@@ -1637,7 +1553,7 @@ + Rule Tunisia 2006 2008 - Mar lastSun 2:00s 1:00 S + Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 - + +-# See Europe/Paris for PMT-related transitions. ++# See Europe/Paris commentary for PMT-related transitions. + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Africa/Tunis 0:40:44 - LMT 1881 May 12 + 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time +--- contrib/tzdata/antarctica.orig ++++ contrib/tzdata/antarctica +@@ -148,7 +148,7 @@ + # + # Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964; + # sealing & whaling stations operated variously 1802/1911+; +-# see Indian/Reunion. ++# see Asia/Dubai. + # + # Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950 + # Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951; +@@ -162,17 +162,7 @@ + 5:00 - +05 + # + # year-round base in the main continent +-# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 +-# <https://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05) +-# +-# Another base at Port-Martin, 50km east, began operation in 1947. +-# It was destroyed by fire on 1952-01-14. +-# +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Antarctica/DumontDUrville 0 - -00 1947 +- 10:00 - +10 1952 Jan 14 +- 0 - -00 1956 Nov +- 10:00 - +10 ++# Dumont d'Urville - see Pacific/Port_Moresby. + + # France & Italy - year-round base + # Concordia, -750600+1232000, since 2005 +@@ -188,20 +178,7 @@ + # Zuchelli, Terra Nova Bay, -744140+1640647, since 1986 + + # Japan - year-round bases +-# Syowa (also known as Showa), -690022+0393524, since 1957 +-# +-# From Hideyuki Suzuki (1999-02-06): +-# In all Japanese stations, +0300 is used as the standard time. +-# +-# Syowa station, which is the first antarctic station of Japan, +-# was established on 1957-01-29. Since Syowa station is still the main +-# station of Japan, it's appropriate for the principal location. +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Antarctica/Syowa 0 - -00 1957 Jan 29 +- 3:00 - +03 +-# See: +-# NIPR Antarctic Research Activities (1999-08-17) +-# http://www.nipr.ac.jp/english/ara01.html ++# See Asia/Riyadh. + + # S Korea - year-round base + # Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014 +--- contrib/tzdata/asia.orig ++++ contrib/tzdata/asia +@@ -34,9 +34,6 @@ + # Byalokoz EL. New Counting of Time in Russia since July 1, 1919. + # (See the 'europe' file for a fuller citation.) + # +-# A reliable and entertaining source about time zones is +-# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). +-# + # The following alphabetic abbreviations appear in these tables + # (corrections are welcome): + # std dst +@@ -2749,7 +2746,8 @@ + # + # peninsular Malaysia + # taken from Mok Ly Yng (2003-10-30) +-# http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html ++# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html ++# This agrees with Singapore since 1905-06-01. + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 + 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. +@@ -3408,8 +3406,12 @@ + # ... winter time will begin in Palestine from Friday 10-29, 01:00 AM + # by 60 minutes backwards. + # +-# From Paul Eggert (2021-10-20): +-# Guess future fall transitions on October's last Friday at 01:00. ++# From Tim Parenti (2021-10-25), per Paul Eggert (2021-10-24): ++# Guess future fall transitions at 01:00 on the Friday preceding October's ++# last Sunday (i.e., Fri>=23), as this is more consistent with recent practice. ++ ++# From Heba Hamad (2022-03-10): ++# summer time will begin in Palestine from Sunday 03-27-2022, 00:00 AM. + + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule EgyptAsia 1957 only - May 10 0:00 1:00 S +@@ -3445,9 +3447,10 @@ + Rule Palestine 2016 2018 - Oct Sat>=24 1:00 0 - + Rule Palestine 2019 only - Mar 29 0:00 1:00 S + Rule Palestine 2019 only - Oct Sat>=24 0:00 0 - +-Rule Palestine 2020 max - Mar Sat>=24 0:00 1:00 S ++Rule Palestine 2020 2021 - Mar Sat>=24 0:00 1:00 S + Rule Palestine 2020 only - Oct 24 1:00 0 - +-Rule Palestine 2021 max - Oct lastFri 1:00 0 - ++Rule Palestine 2021 max - Oct Fri>=23 1:00 0 - ++Rule Palestine 2022 max - Mar Sun>=25 0:00 1:00 S + + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Asia/Gaza 2:17:52 - LMT 1900 Oct +@@ -3516,6 +3519,12 @@ + # influence of the sources. There is no current abbreviation for DST, + # so use "PDT", the usual American style. + ++# From P Chan (2021-05-10): ++# Here's a fairly comprehensive article in Japanese: ++# https://wiki.suikawiki.org/n/Philippine%20Time ++# From Paul Eggert (2021-05-10): ++# The info in the Japanese table has not been absorbed (yet) below. ++ + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule Phil 1936 only - Nov 1 0:00 1:00 D + Rule Phil 1937 only - Feb 1 0:00 0 S +@@ -3582,12 +3591,13 @@ + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 + 3:00 - +03 ++Link Asia/Riyadh Antarctica/Syowa + Link Asia/Riyadh Asia/Aden # Yemen + Link Asia/Riyadh Asia/Kuwait + + # Singapore + # taken from Mok Ly Yng (2003-10-30) +-# http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html ++# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 + 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. +--- contrib/tzdata/australasia.orig ++++ contrib/tzdata/australasia +@@ -478,7 +478,7 @@ + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki + 12:00 - +12 +-Zone Pacific/Enderbury -11:24:20 - LMT 1901 ++Zone Pacific/Kanton 0 - -00 1937 Aug 31 + -12:00 - -12 1979 Oct + -11:00 - -11 1994 Dec 31 + 13:00 - +13 +@@ -611,13 +611,46 @@ + # was probably like Pacific/Auckland + + # Cook Is +-# From Shanks & Pottenger: ++# ++# From Alexander Krivenyshev (2021-03-24): ++# In 1899 the Cook Islands celebrated Christmas twice to correct the calendar. ++# According to the old books, missionaries were unaware of ++# the International Date line, when they came from Sydney. ++# Thus the Cook Islands were one day ahead.... ++# http://nzetc.victoria.ac.nz/tm/scholarly/tei-KloDisc-t1-body-d18.html ++# ... Appendix to the Journals of the House of Representatives, 1900 ++# https://atojs.natlib.govt.nz/cgi-bin/atojs?a=d&d=AJHR1900-I.2.1.2.3 ++# (page 20) ++# ++# From Michael Deckers (2021-03-24): ++# ... in the Cook Island Act of 1915-10-11, online at ++# http://www.paclii.org/ck/legis/ck-nz_act/cia1915132/ ++# "651. The hour of the day shall in each of the islands included in the ++# Cook Islands be determined in accordance with the meridian of that island." ++# so that local (mean?) time was still used in Rarotonga (and Niue) in 1915. ++# This was changed in the Cook Island Amendment Act of 1952-10-16 ... ++# http://www.paclii.org/ck/legis/ck-nz_act/ciaa1952212/ ++# "651 (1) The hour of the day in each of the islands included in the Cook ++# Islands, other than Niue, shall be determined as if each island were ++# situated on the meridian one hundred and fifty-seven degrees thirty minutes ++# West of Greenwich. (2) The hour of the day in the Island of Niue shall be ++# determined as if that island were situated on the meridian one hundred and ++# seventy degrees West of Greenwich." ++# This act does not state when it takes effect, so one has to assume it ++# applies since 1952-10-16. But there is the possibility that the act just ++# legalized prior existing practice, as we had seen with the Guernsey law of ++# 1913-06-18 for the switch in 1909-04-19. ++# ++# From Paul Eggert (2021-03-24): ++# Transitions after 1952 are from Shanks & Pottenger. ++# + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule Cook 1978 only - Nov 12 0:00 0:30 - + Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 - + Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 - + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua ++Zone Pacific/Rarotonga 13:20:56 - LMT 1899 Dec 26 # Avarua ++ -10:39:04 - LMT 1952 Oct 16 + -10:30 - -1030 1978 Nov 12 + -10:00 Cook -10/-0930 + +@@ -625,10 +658,18 @@ + + + # Niue ++# See Pacific/Raratonga comments for 1952 transition. ++# ++# From Tim Parenti (2021-09-13): ++# Consecutive contemporaneous editions of The Air Almanac listed -11:20 for ++# Niue as of Apr 1964 but -11 as of Aug 1964: ++# Apr 1964: https://books.google.com/books?id=_1So677Y5vUC&pg=SL1-PA23 ++# Aug 1964: https://books.google.com/books?id=MbJloqd-zyUC&pg=SL1-PA23 ++# Without greater specificity, guess 1964-07-01 for this transition. ++ + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi +- -11:20 - -1120 1951 +- -11:30 - -1130 1978 Oct 1 ++Zone Pacific/Niue -11:19:40 - LMT 1952 Oct 16 # Alofi ++ -11:20 - -1120 1964 Jul + -11:00 - -11 + + # Norfolk +@@ -652,6 +693,7 @@ + Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 + 9:48:32 - PMMT 1895 # Port Moresby Mean Time + 10:00 - +10 ++Link Pacific/Port_Moresby Antarctica/DumontDUrville + # + # From Paul Eggert (2014-10-13): + # Base the Bougainville entry on the Arawa-Kieta region, which appears to have +@@ -813,8 +855,8 @@ + Rule Tonga 2016 only - Nov Sun>=1 2:00 1:00 - + Rule Tonga 2017 only - Jan Sun>=15 3:00 0 - + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone Pacific/Tongatapu 12:19:20 - LMT 1901 +- 12:20 - +1220 1941 ++Zone Pacific/Tongatapu 12:19:12 - LMT 1945 Sep 10 ++ 12:20 - +1220 1961 + 13:00 - +13 1999 + 13:00 Tonga +13/+14 + +@@ -1756,6 +1798,23 @@ + # One source for this is page 202 of: Bartky IR. One Time Fits All: + # The Campaigns for Global Uniformity (2007). + ++# Kanton ++ ++# From Paul Eggert (2021-05-27): ++# Kiribati's +13 timezone is represented by Kanton, its only populated ++# island. (It was formerly spelled "Canton", but Gilbertese lacks "C".) ++# Kanton was settled on 1937-08-31 by two British radio operators ++# <https://history.state.gov/historicaldocuments/frus1937v02/d94>; ++# Americans came the next year and built an airfield, partly to ++# establish airline service and perhaps partly anticipating the ++# next war. Aside from the war, the airfield was used by commercial ++# airlines until long-range jets became standard; although currently ++# for emergency use only, China says it is considering rebuilding the ++# airfield for high-end niche tourism. Kanton has about two dozen ++# people, caretakers who rotate in from the rest of Kiribati in 2-5 ++# year shifts, and who use some of the leftover structures ++# <http://pipa.neaq.org/2012/06/images-of-kanton-island.html>. ++ + # Kwajalein + + # From an AP article (1993-08-22): +@@ -2039,6 +2098,17 @@ + + # Tonga + ++# From Paul Eggert (2021-03-04): ++# In 1943 "The standard time kept is 12 hrs. 19 min. 12 sec. fast ++# on Greenwich mean time." according to the Admiralty's Hydrographic ++# Dept., Pacific Islands Pilot, Vol. II, 7th ed., 1943, p 360. ++ ++# From Michael Deckers (2021-03-03): ++# [Ian R Bartky: "One Time Fits All: The Campaigns for Global Uniformity". ++# Stanford University Press. 2007. p. 255]: ++# On 10 September 1945 Tonga adopted a standard time 12 hours, ++# 20 minutes in advance of Greenwich. ++ + # From Paul Eggert (1996-01-22): + # Today's _Wall Street Journal_ (p 1) reports that "Tonga has been plotting + # to sneak ahead of [New Zealanders] by introducing daylight-saving time." +@@ -2067,9 +2137,26 @@ + # The Crown Prince, presented an unanswerable argument: "Remember that + # on the World Day of Prayer, you would be the first people on Earth + # to say your prayers in the morning." +- +-# From Paul Eggert (2006-03-22): +-# Shanks & Pottenger say the transition was on 1968-10-01; go with Mundell. ++# ++# From Tim Parenti (2021-09-13), per Paul Eggert (2006-03-22) and Michael ++# Deckers (2021-03-03): ++# Mundell places the transition from +12:20 to +13 in 1941, while Shanks & ++# Pottenger say the transition was on 1968-10-01. ++# ++# The Air Almanac published contemporaneous tables of standard times, ++# which listed +12:20 as of Nov 1960 and +13 as of Mar 1961: ++# Nov 1960: https://books.google.com/books?id=bVgtWM6kPZUC&pg=SL1-PA19 ++# Mar 1961: https://books.google.com/books?id=W2nItAul4g0C&pg=SL1-PA19 ++# (Thanks to P Chan for pointing us toward these sources.) ++# This agrees with Bartky, who writes that "since 1961 [Tonga's] official time ++# has been thirteen hours in advance of Greenwich time" (p. 202) and further ++# writes in an endnote that this was because "the legislation was amended" on ++# 1960-10-19. (p. 255) ++# ++# Without greater specificity, presume that Bartky and the Air Almanac point to ++# a 1961-01-01 transition, as Tāufaʻāhau Tupou IV was still Crown Prince in ++# 1961 and this still jives with the gist of Mundell's telling, and go with ++# this over Shanks & Pottenger. + + # From Eric Ulevik (1999-05-03): + # Tonga's director of tourism, who is also secretary of the National Millennium +--- contrib/tzdata/backward.orig ++++ contrib/tzdata/backward +@@ -3,8 +3,10 @@ + # This file is in the public domain, so clarified as of + # 2009-05-17 by Arthur David Olson. + +-# This file provides links between current names for timezones +-# and their old names. Many names changed in late 1993. ++# This file provides links from old or merged timezone names to current ones. ++# Many names changed in late 1993. Several of these names are ++# also present in the file 'backzone', which has data important only ++# for pre-1970 timestamps and so is out of scope for tzdb proper. + + # Link TARGET LINK-NAME + Link Africa/Nairobi Africa/Asmera +@@ -13,7 +15,7 @@ + Link America/Adak America/Atka + Link America/Argentina/Buenos_Aires America/Buenos_Aires + Link America/Argentina/Catamarca America/Catamarca +-Link America/Atikokan America/Coral_Harbour ++Link America/Panama America/Coral_Harbour + Link America/Argentina/Cordoba America/Cordoba + Link America/Tijuana America/Ensenada + Link America/Indiana/Indianapolis America/Fort_Wayne +@@ -28,7 +30,7 @@ + Link America/Argentina/Cordoba America/Rosario + Link America/Tijuana America/Santa_Isabel + Link America/Denver America/Shiprock +-Link America/Port_of_Spain America/Virgin ++Link America/Puerto_Rico America/Virgin + Link Pacific/Auckland Antarctica/South_Pole + Link Asia/Ashgabat Asia/Ashkhabad + Link Asia/Kolkata Asia/Calcutta +@@ -103,6 +105,7 @@ + Link Pacific/Chatham NZ-CHAT + Link America/Denver Navajo + Link Asia/Shanghai PRC ++Link Pacific/Kanton Pacific/Enderbury + Link Pacific/Honolulu Pacific/Johnston + Link Pacific/Pohnpei Pacific/Ponape + Link Pacific/Pago_Pago Pacific/Samoa +--- contrib/tzdata/backzone.orig ++++ contrib/tzdata/backzone +@@ -68,6 +68,91 @@ + # + # As explained in the zic man page, the zone columns are: + # Zone NAME STDOFF RULES FORMAT [UNTIL] ++# and the rule columns are: ++# Rule NAME FROM TO - IN ON AT SAVE LETTER/S ++ ++ ++# Ghana ++ ++# From P Chan (2020-11-20): ++# Interpretation Amendment Ordinance, 1915 (No.24 of 1915) [1915-11-02] ++# Ordinances of the Gold Coast, Ashanti, Northern Territories 1915, p 69-71 ++# https://books.google.com/books?id=ErA-AQAAIAAJ&pg=PA70 ++# This Ordinance added "'Time' shall mean Greenwich Mean Time" to the ++# Interpretation Ordinance, 1876. ++# ++# Determination of the Time Ordinance, 1919 (No. 18 of 1919) [1919-11-24] ++# Ordinances of the Gold Coast, Ashanti, Northern Territories 1919, p 75-76 ++# https://books.google.com/books?id=MbA-AQAAIAAJ&pg=PA75 ++# This Ordinance removed the previous definition of time and introduced DST. ++# ++# Time Determination Ordinance (Cap. 214) ++# The Laws of the Gold Coast (including Togoland Under British Mandate) ++# Vol. II (1937), p 2328 ++# https://books.google.com/books?id=Z7M-AQAAIAAJ&pg=PA2328 ++# Revised edition of the 1919 Ordinance. ++# ++# Time Determination (Amendment) Ordinance, 1940 (No. 9 of 1940) [1940-04-06] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1940, p 22 ++# https://books.google.com/books?id=1ao-AQAAIAAJ&pg=PA22 ++# This Ordinance changed the forward transition from September to May. ++# ++# Defence (Time Determination Ordinance Amendment) Regulations, 1942 ++# (Regulations No. 6 of 1942) [1942-01-31, commenced on 1942-02-08] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1942, p 48 ++# https://books.google.com/books?id=Das-AQAAIAAJ&pg=PA48 ++# These regulations advanced the [standard] time by thirty minutes. ++# ++# Defence (Time Determination Ordinance Amendment (No.2)) Regulations, ++# 1942 (Regulations No. 28 of 1942) [1942-04-25] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1942, p 87 ++# https://books.google.com/books?id=Das-AQAAIAAJ&pg=PA87 ++# These regulations abolished DST and changed the time to GMT+0:30. ++# ++# Defence (Revocation) (No.4) Regulations, 1945 (Regulations No. 45 of ++# 1945) [1945-10-24, commenced on 1946-01-06] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1945, p 256 ++# https://books.google.com/books?id=9as-AQAAIAAJ&pg=PA256 ++# These regulations revoked the previous two sets of Regulations. ++# ++# Time Determination (Amendment) Ordinance, 1945 (No. 18 of 1945) [1946-01-06] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1945, p 69 ++# https://books.google.com/books?id=9as-AQAAIAAJ&pg=PA69 ++# This Ordinance abolished DST. ++# ++# Time Determination (Amendment) Ordinance, 1950 (No. 26 of 1950) [1950-07-22] ++# Annual Volume of the Laws of the Gold Coast: ++# Containing All Legislation Enacted During Year 1950, p 35 ++# https://books.google.com/books?id=e60-AQAAIAAJ&pg=PA35 ++# This Ordinance restored DST but with thirty minutes offset. ++# ++# Time Determination Ordinance (Cap. 264) ++# The Laws of the Gold Coast, Vol. V (1954), p 380 ++# https://books.google.com/books?id=Mqc-AQAAIAAJ&pg=PA380 ++# Revised edition of the Time Determination Ordinance. ++# ++# Time Determination (Amendment) Ordinance, 1956 (No. 21 of 1956) [1956-08-29] ++# Annual Volume of the Ordinances of the Gold Coast Enacted During the ++# Year 1956, p 83 ++# https://books.google.com/books?id=VLE-AQAAIAAJ&pg=PA83 ++# This Ordinance abolished DST. ++ ++Rule Ghana 1919 only - Nov 24 0:00 0:20 +0020 ++Rule Ghana 1920 1942 - Jan 1 2:00 0 GMT ++Rule Ghana 1920 1939 - Sep 1 2:00 0:20 +0020 ++Rule Ghana 1940 1941 - May 1 2:00 0:20 +0020 ++Rule Ghana 1950 1955 - Sep 1 2:00 0:30 +0030 ++Rule Ghana 1951 1956 - Jan 1 2:00 0 GMT ++ ++Zone Africa/Accra -0:00:52 - LMT 1915 Nov 2 ++ 0:00 Ghana %s 1942 Feb 8 ++ 0:30 - +0030 1946 Jan 6 ++ 0:00 Ghana %s + + # Ethiopia + # From Paul Eggert (2014-07-31): +@@ -101,14 +186,36 @@ + Zone Africa/Bangui 1:14:20 - LMT 1912 + 1:00 - WAT + +-# Gambia ++# The Gambia ++# From P Chan (2020-12-09): ++# Standard time of GMT-1 was adopted on 1933-04-01. On 1942-02-01, GMT was ++# adopted as a war time measure. This was made permanent in 1946. ++# ++# Interpretation Ordinance, 1914 (No. 12 of 1914) [1914-09-29] ++# Interpretation Ordinance, 1933 (No. 10 of 1933) [1933-03-31] ++# Notice No. 5 of 1942, Colony of the Gambia Government Gazette, Vol. LIX, ++# No.2, 1942-01-15, p 2 ++# Interpretation (Amendment) Ordinance, 1946 (No. 3 of 1946) [1946-07-15] + Zone Africa/Banjul -1:06:36 - LMT 1912 +- -1:06:36 - BMT 1935 # Banjul Mean Time +- -1:00 - -01 1964 ++ -1:06:36 - BMT 1933 Apr 1 # Banjul Mean Time ++ -1:00 - -01 1942 Feb 1 0:00 + 0:00 - GMT + + # Malawi +-Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar ++# From P Chan (2020-12-09): ++# In 1911, Zomba mean time was adopted as the legal time of Nyasaland. In ++# 1914, Zomba mean time switched from GMT+2:21:10 to GMT+2:21. On 1925-07-01, ++# GMT+2 was adopted. ++# ++# Interpretation and General Clauses Ordinance, 1911 (No. 12 of 1911) ++# [1911-07-24] ++# Notice No. 124 of 1914, 1914-06-30, The Nyasaland Government Gazette, Vol. ++# XXI, No. 8, 1914-06-30, p 122 ++# Interpretation and General Clauses (Amendment) Ordinance, 1925 (No. 3 of ++# 1925) [1925-04-02] ++Zone Africa/Blantyre 2:20:00 - LMT 1911 Jul 24 ++ 2:21:10 - ZMT 1914 Jun 30 # Zomba Mean Time ++ 2:21 - ZMT 1925 Jul 1 + 2:00 - CAT + + # Republic of the Congo +@@ -145,19 +252,49 @@ + Zone Africa/Douala 0:38:48 - LMT 1912 + 1:00 - WAT + # Sierra Leone +-# From Paul Eggert (2014-08-12): +-# The following table is from Shanks & Pottenger, but it can't be right. +-# Whitman gives Mar 31 - Aug 31 for 1931 on. +-# The International Hydrographic Bulletin, 1932-33, p 63 says that +-# Sierra Leone would advance its clocks by 20 minutes on 1933-10-01. +-# Rule NAME FROM TO - IN ON AT SAVE LETTER/S +-Rule SL 1935 1942 - Jun 1 0:00 0:40 -0020 +-Rule SL 1935 1942 - Oct 1 0:00 0 -01 +-Rule SL 1957 1962 - Jun 1 0:00 1:00 +01 +-Rule SL 1957 1962 - Sep 1 0:00 0 GMT ++# From P Chan (2020-12-09): ++# Standard time of GMT-1 was adopted on 1913-07-01. Twenty minutes of DST was ++# introduce[d] in 1932 and was suspended in 1939. In 1941, GMT was adopted by ++# Defence Regulations. This was made permanent in 1946. ++# ++# Government Notice No. 121 of 1913, 1913-06-06, Sierra Leone Royal Gazette, ++# Vol. XLIV, No. 1384, 1913-06-14, p 347 ++# Alteration of Time Ordinance, 1932 (No. 34 of 1932) [1932-12-01] ++# Alteration of Time (Amendment) Ordinance, 1938 (No. 25 of 1938) [1938-11-24] ++# Defence Regulations (No. 9), 1939 (Regulations No. 9 of 1939), 1939-09-05 ++# Defence Regulations (No. 11), 1939 (Regulations No. 11 of 1939), 1939-09-27 ++# Defence (Amendment) (No. 17) Regulations, 1941 (Public Notice No. 157 of ++# 1941), 1914-12-04 ++# Alteration of Time (Amendment) Ordinance, 1946 (No. 2 of 1946) [1946-02-07] ++ ++# From Tim Parenti (2021-03-02), per P Chan (2021-02-25): ++# For Sierra Leone in 1957-1962, the standard time was defined in the ++# Alteration of Time Ordinance, 1932 (as amended in 1946, renamed to Local Time ++# Ordinance in 1960 and Local Time Act in 1961). It was unamended throughout ++# that period. See references to "Time" in the Alphabetical Index of the ++# Legislation in force on the 31st day of December, ++# 1957: https://books.google.com/books?id=lvQ-AQAAIAAJ&pg=RA2-PA49 ++# 1958: https://books.google.com/books?id=4fQ-AQAAIAAJ&pg=RA2-PA50 ++# 1959: https://books.google.com/books?id=p_U-AQAAIAAJ&pg=RA2-PA55 ++# 1960: https://books.google.com/books?id=JPY-AQAAIAAJ&pg=RA3-PA37 ++# 1961: https://books.google.com/books?id=7vY-AQAAIAAJ&pg=RA3-PA41 ++# 1962: https://books.google.com/books?id=W_c-AQAAIAAJ&pg=RA3-PA44 ++# 1963: https://books.google.com/books?id=9vk-AQAAIAAJ&pg=RA1-PA47 ++# ++# Although Shanks & Pottenger had DST from Jun 1 00:00 to Sep 1 00:00 in this ++# period, many contemporaneous almanacs agree that it wasn't used: ++# https://mm.icann.org/pipermail/tz/2021-February/029866.html ++# Go with the above. ++ ++Rule SL 1932 only - Dec 1 0:00 0:20 -0040 ++Rule SL 1933 1938 - Mar 31 24:00 0 -01 ++Rule SL 1933 1939 - Aug 31 24:00 0:20 -0040 ++Rule SL 1939 only - May 31 24:00 0 -01 ++ + Zone Africa/Freetown -0:53:00 - LMT 1882 +- -0:53:00 - FMT 1913 Jun # Freetown Mean Time +- -1:00 SL %s 1957 ++ -0:53:00 - FMT 1913 Jul 1 # Freetown MT ++ -1:00 SL %s 1939 Sep 5 ++ -1:00 - -01 1941 Dec 6 24:00 + 0:00 SL GMT/+01 + + # Botswana +@@ -209,7 +346,15 @@ + 1:00 - WAT + + # Democratic Republic of the Congo (east) +-Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9 ++# ++# From Alois Treindl (2022-02-28): ++# My main source for its time zone history is ++# Henri le Corre, Régimes horaires pour l'Europe et l'Afrique. ++# Shanks follows le Corre. As does Françoise Schneider-Gauquelin in her book ++# Problèmes de l'heure résolus pour le monde entier. ++# ++Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9 ++ 1:00 - WAT 1920 Apr 25 + 2:00 - CAT + + # Zambia +@@ -298,6 +443,85 @@ + -4:30 - -0430 1965 + -4:00 - AST + ++# Atikokan, Ontario ++ ++# From Paul Eggert (1997-10-17): ++# Mark Brader writes that an article in the 1997-10-14 Toronto Star ++# says that Atikokan, Ontario currently does not observe DST, ++# but will vote on 11-10 whether to use EST/EDT. ++# He also writes that the Ontario Time Act (1990, Chapter T.9) ++# http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html ++# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT. ++# Officially Atikokan is therefore on CST/CDT, and most likely this report ++# concerns a non-official time observed as a matter of local practice. ++# ++# From Paul Eggert (2000-10-02): ++# Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and ++# New Osnaburgh observe CST all year, that Big Trout Lake observes ++# CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in ++# violation of the official Ontario rules. ++# ++# From Paul Eggert (2006-07-09): ++# Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the ++# 2005-07-21 Chronicle-Journal, which said: ++# ++# The clocks in Atikokan stay set on standard time year-round. ++# This means they spend about half the time on central time and ++# the other half on eastern time. ++# ++# For the most part, the system works, Mayor Dennis Brown said. ++# ++# "The majority of businesses in Atikokan deal more with Eastern ++# Canada, but there are some that deal with Western Canada," he ++# said. "I don't see any changes happening here." ++# ++# Walton also writes "Supposedly Pickle Lake and Mishkeegogamang ++# [New Osnaburgh] follow the same practice." ++ ++# From Garry McKinnon (2006-07-14) via Chris Walton: ++# I chatted with a member of my board who has an outstanding memory ++# and a long history in Atikokan (and in the telecom industry) and he ++# can say for certain that Atikokan has been practicing the current ++# time keeping since 1952, at least. ++ ++# From Paul Eggert (2006-07-17): ++# Shanks & Pottenger say that Atikokan has agreed with Rainy River ++# ever since standard time was introduced, but the information from ++# McKinnon sounds more authoritative. For now, assume that Atikokan ++# switched to EST immediately after WWII era daylight saving time ++# ended. This matches the old (less-populous) America/Coral_Harbour ++# entry since our cutoff date of 1970, so we can move ++# America/Coral_Harbour to the 'backward' file. ++ ++Zone America/Atikokan -6:06:28 - LMT 1895 ++ -6:00 Canada C%sT 1940 Sep 29 ++ -6:00 1:00 CDT 1942 Feb 9 2:00s ++ -6:00 Canada C%sT 1945 Sep 30 2:00 ++ -5:00 - EST ++ ++# Quebec east of Natashquan ++ ++# From Paul Eggert (2021-05-09): ++# H. David Matthews and Mary Vincent's map ++# "It's about TIME", _Canadian Geographic_ (September-October 1998) ++# http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp ++# says that Quebec east of the -63 meridian is supposed to observe ++# AST, but residents as far east as Natashquan use EST/EDT, and ++# residents east of Natashquan use AST. ++# The Quebec department of justice writes in ++# "The situation in Minganie and Basse-Côte-Nord" ++# https://www.justice.gouv.qc.ca/en/department/ministre/functions-and-responsabilities/legal-time-in-quebec/the-situation-in-minganie-and-basse-cote-nord/ ++# that the coastal strip from just east of Natashquan to Blanc-Sablon ++# observes Atlantic standard time all year round. ++# This common practice was codified into law as of 2007; see Legal Time Act, ++# CQLR c T-5.1 <http://legisquebec.gouv.qc.ca/en/ShowDoc/cs/T-5.1>. ++# For lack of better info, guess this practice began around 1970, contra to ++# Shanks & Pottenger who have this region observing AST/ADT. ++ ++Zone America/Blanc-Sablon -3:48:28 - LMT 1884 ++ -4:00 Canada A%sT 1970 ++ -4:00 - AST ++ + # Cayman Is + Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown + -5:07:10 - KMT 1912 Feb # Kingston Mean Time +@@ -318,6 +542,85 @@ + -5:00 NT_YK E%sT 1946 + -5:00 - EST + ++# From Chris Walton (2011-12-01): ++# There are two areas within the Canadian province of British Columbia ++# that do not currently observe daylight saving: ++# a) The Creston Valley (includes the town of Creston and surrounding area) ++# b) The eastern half of the Peace River Regional District ++# (includes the cities of Dawson Creek and Fort St. John) ++ ++# Earlier this year I stumbled across a detailed article about the time ++# keeping history of Creston; it was written by Tammy Hardwick who is the ++# manager of the Creston & District Museum. The article was written in May 2009. ++# http://www.ilovecreston.com/?p=articles&t=spec&ar=260 ++# According to the article, Creston has not changed its clocks since June 1918. ++# i.e. Creston has been stuck on UT-7 for 93 years. ++# Dawson Creek, on the other hand, changed its clocks as recently as April 1972. ++ ++# Unfortunately the exact date for the time change in June 1918 remains ++# unknown and will be difficult to ascertain. I e-mailed Tammy a few months ++# ago to ask if Sunday June 2 was a reasonable guess. She said it was just ++# as plausible as any other date (in June). She also said that after writing ++# the article she had discovered another time change in 1916; this is the ++# subject of another article which she wrote in October 2010. ++# http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56 ++ ++# Here is a summary of the three clock change events in Creston's history: ++# 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7) ++# Exact date unknown ++# 2. Oct 1916: switch to Pacific Standard Time (GMT-8) ++# Exact date in October unknown; Sunday October 1 is a reasonable guess. ++# 3. June 1918: switch to Pacific Daylight Time (GMT-7) ++# Exact date in June unknown; Sunday June 2 is a reasonable guess. ++# note 1: ++# On Oct 27/1918 when daylight saving ended in the rest of Canada, ++# Creston did not change its clocks. ++# note 2: ++# During WWII when the Federal Government legislated a mandatory clock change, ++# Creston did not oblige. ++# note 3: ++# There is no guarantee that Creston will remain on Mountain Standard Time ++# (UTC-7) forever. ++# The subject was debated at least once this year by the town Council. ++# http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html ++ ++# During a period WWII, summer time (Daylight saying) was mandatory in Canada. ++# In Creston, that was handled by shifting the area to PST (-8:00) then applying ++# summer time to cause the offset to be -7:00, the same as it had been before ++# the change. It can be argued that the timezone abbreviation during this ++# period should be PDT rather than MST, but that doesn't seem important enough ++# (to anyone) to further complicate the rules. ++ ++# The transition dates (and times) are guesses. ++ ++Zone America/Creston -7:46:04 - LMT 1884 ++ -7:00 - MST 1916 Oct 1 ++ -8:00 - PST 1918 Jun 2 ++ -7:00 - MST ++ ++# Curaçao ++# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. ++# ++# From Paul Eggert (2006-03-22): ++# Shanks & Pottenger say that The Bottom and Philipsburg have been at ++# -4:00 since standard time was introduced on 1912-03-02; and that ++# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from ++# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say ++# Saba Island has been like Curaçao. ++# This all predates our 1970 cutoff, though. ++# ++# By July 2007 Curaçao and St Maarten are planned to become ++# associated states within the Netherlands, much like Aruba; ++# Bonaire, Saba and St Eustatius would become directly part of the ++# Netherlands as Kingdom Islands. This won't affect their time zones ++# though, as far as we know. ++# ++Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad ++ -4:30 - -0430 1965 ++ -4:00 - AST ++Link America/Curacao America/Kralendijk ++Link America/Curacao America/Lower_Princes ++ + # Dominica + Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau + -4:00 - AST +@@ -340,6 +643,7 @@ + Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe-à-Pitre + -4:00 - AST + ++ + # Canada + # + # From Paul Eggert (2015-03-24): +@@ -351,7 +655,6 @@ + # Pottenger data. The post-1970 entries have been corrected, but the + # pre-1970 entries are unchecked and probably have errors. + # +-# Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule Mont 1917 only - Mar 25 2:00 1:00 D + Rule Mont 1917 only - Apr 24 0:00 0 S + Rule Mont 1919 only - Mar 31 2:30 1:00 D +@@ -387,6 +690,48 @@ + Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill + -4:00 - AST + ++# The Bahamas ++# ++# For 1899 Milne gives -5:09:29.5; round that. ++# ++# From P Chan (2020-11-27, corrected on 2020-12-02): ++# There were two periods of DST observed in 1942-1945: 1942-05-01 ++# midnight to 1944-12-31 midnight and 1945-02-01 to 1945-10-17 midnight. ++# "midnight" should mean 24:00 from the context. ++# ++# War Time Order 1942 [1942-05-01] and War Time (No. 2) Order 1942 [1942-09-29] ++# Appendix to the Statutes of 7 George VI. and the Year 1942. p 34, 43 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA3-PA34 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA3-PA43 ++# ++# War Time Order 1943 [1943-03-31] and War Time Order 1944 [1943-12-29] ++# Appendix to the Statutes of 8 George VI. and the Year 1943. p 9-10, 28-29 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA4-PA9 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA4-PA28 ++# ++# War Time Order 1945 [1945-01-31] and the Order which revoke War Time Order ++# 1945 [1945-10-16] Appendix to the Statutes of 9 George VI. and the Year ++# 1945. p 160, 247-248 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA6-PA160 ++# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA6-PA247 ++# ++# From Sue Williams (2006-12-07): ++# The Bahamas announced about a month ago that they plan to change their DST ++# rules to sync with the U.S. starting in 2007.... ++# http://www.jonesbahamas.com/?c=45&a=10412 ++ ++Rule Bahamas 1942 only - May 1 24:00 1:00 W ++Rule Bahamas 1944 only - Dec 31 24:00 0 S ++Rule Bahamas 1945 only - Feb 1 0:00 1:00 W ++Rule Bahamas 1945 only - Aug 14 23:00u 1:00 P # Peace ++Rule Bahamas 1945 only - Oct 17 24:00 0 S ++Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S ++Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D ++ ++Zone America/Nassau -5:09:30 - LMT 1912 Mar 2 ++ -5:00 Bahamas E%sT 1976 ++ -5:00 US E%sT ++ + # United States + # + # From Paul Eggert (2018-03-18): +@@ -411,6 +756,12 @@ + # https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19470110 + # front page reports on end. + ++# Trinidad and Tobago ++Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 ++ -4:00 - AST ++Link America/Port_of_Spain America/Marigot ++Link America/Port_of_Spain America/St_Barthelemy ++ + # Argentina + # This entry was intended for the following areas, but has been superseded by + # more detailed zones. +@@ -434,9 +785,10 @@ + -4:04:00 - CMT 1912 # Castries Mean Time + -4:00 - AST + +-# Virgin Is ++# US Virgin Is + Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie + -4:00 - AST ++Link America/St_Thomas America/Virgin + + # St Vincent and the Grenadines + Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown +@@ -447,11 +799,36 @@ + Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town + -4:00 - AST + ++# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 ++# <https://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05) ++# ++# Another base at Port-Martin, 50km east, began operation in 1947. ++# It was destroyed by fire on 1952-01-14. ++# ++Zone Antarctica/DumontDUrville 0 - -00 1947 ++ 10:00 - +10 1952 Jan 14 ++ 0 - -00 1956 Nov ++ 10:00 - +10 ++ + # McMurdo, Ross Island, since 1955-12 + Zone Antarctica/McMurdo 0 - -00 1956 + 12:00 NZ NZ%sT + Link Antarctica/McMurdo Antarctica/South_Pole + ++# Syowa, Antarctica ++# ++# From Hideyuki Suzuki (1999-02-06): ++# In all Japanese stations, +0300 is used as the standard time. ++# ++# Syowa station, which is the first antarctic station of Japan, ++# was established on 1957-01-29. Since Syowa station is still the main ++# station of Japan, it's appropriate for the principal location. ++# See: ++# NIPR Antarctic Research Activities (1999-08-17) ++# http://www.nipr.ac.jp/english/ara01.html ++Zone Antarctica/Syowa 0 - -00 1957 Jan 29 ++ 3:00 - +03 ++ + # Yemen + # Milne says 2:59:54 was the meridian of the saluting battery at Aden, + # and that Yemen was at 1:55:56, the meridian of the Hagia Sophia. +@@ -711,6 +1088,8 @@ + 1:00 - CET 1982 Nov 27 + 1:00 EU CE%sT + ++ ++ + # Moldova / Transnistria + Zone Europe/Tiraspol 1:58:32 - LMT 1880 + 1:55 - CMT 1918 Feb 15 # Chisinau MT +@@ -749,10 +1128,22 @@ + Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou + 3:00 - EAT + +-# US minor outlying islands ++# Phoenix Islands, Kiribati ++# From Paul Eggert (2021-05-27): ++# Enderbury was inhabited 1860/1880s to mine guano, and 1938-03-06/1942-02-09 ++# for aviation (ostensibly commercial, but military uses foreseen). ++# The 19th-century dates are approximate. See Pacific/Kanton for ++# the currently-inhabited representative for this timezone. ++Zone Pacific/Enderbury 0 - -00 1860 ++ -11:24:20 - LMT 1885 ++ 0 - -00 1938 Mar 6 ++ -12:00 - -12 1942 Feb 9 ++ 0 - -00 ++ ++# Johnston + Zone Pacific/Johnston -10:00 - HST + +-# US minor outlying islands ++# Midway + # + # From Mark Brader (2005-01-23): + # [Fallacies and Fantasies of Air Transport History, by R.E.G. Davies, +@@ -775,3 +1166,7 @@ + 9:00 - +09 1969 Oct + 10:00 - +10 2000 Dec 23 + 10:00 - ChST # Chamorro Standard Time ++ ++# Local Variables: ++# coding: utf-8 ++# End: +--- contrib/tzdata/checktab.awk.orig ++++ contrib/tzdata/checktab.awk +@@ -58,11 +58,12 @@ + zone_table, zone_NR >>"/dev/stderr" + status = 1 + } +- split($1, cca, /,/) +- cc = cca[1] ++ ccs = input_ccs[zone_NR] = $1 + coordinates = $2 + tz = $3 +- comments = $4 ++ comments = input_comments[zone_NR] = $4 ++ split(ccs, cca, /,/) ++ cc = cca[1] + + # Don't complain about a special case for Crimea in zone.tab. + # FIXME: zone.tab should be removed, since it is obsolete. +@@ -77,12 +78,9 @@ + cc0 = cc + tz0 = tz + tztab[tz] = 1 +- tz2comments[tz] = comments + tz2NR[tz] = zone_NR + for (i in cca) { + cc = cca[i] +- cctz = cc tz +- cctztab[cctz] = 1 + if (cc2name[cc]) { + cc_used[cc]++ + } else { +@@ -99,27 +97,27 @@ + } + } + +- for (cctz in cctztab) { +- cc = substr (cctz, 1, 2) +- tz = substr (cctz, 3) +- if (1 < cc_used[cc]) { +- comments_needed[tz] = cc +- } +- } +- for (cctz in cctztab) { +- cc = substr (cctz, 1, 2) +- tz = substr (cctz, 3) +- if (!comments_needed[tz] && tz2comments[tz]) { ++ for (i = 1; i <= zone_NR; i++) { ++ ccs = input_ccs[i] ++ if (!ccs) continue ++ comments = input_comments[i] ++ split(ccs, cca, /,/) ++ used_max = 0 ++ for (j in cca) { ++ cc = cca[j] ++ if (used_max < cc_used[cc]) { ++ used_max = cc_used[cc] ++ } ++ } ++ if (used_max <= 1 && comments) { + printf "%s:%d: unnecessary comment '%s'\n", \ +- zone_table, tz2NR[tz], tz2comments[tz] \ +- >>"/dev/stderr" +- tz2comments[tz] = 0 ++ zone_table, i, comments \ ++ >>"/dev/stderr" + status = 1 +- } else if (comments_needed[tz] && !tz2comments[tz]) { ++ } else if (1 < cc_used[cc] && !comments) { + printf "%s:%d: missing comment for %s\n", \ +- zone_table, tz2NR[tz], comments_needed[tz] \ ++ zone_table, i, cc \ + >>"/dev/stderr" +- tz2comments[tz] = 1 + status = 1 + } + } +@@ -149,8 +147,8 @@ + ruleUsed[$2] = 1 + if ($3 ~ /%/) rulePercentUsed[$2] = 1 + } +- if (tz && tz ~ /\//) { +- if (!tztab[tz]) { ++ if (tz && tz ~ /\// && tz !~ /^Etc\//) { ++ if (!tztab[tz] && FILENAME != "backward") { + printf "%s: no data for '%s'\n", zone_table, tz \ + >>"/dev/stderr" + status = 1 +@@ -173,7 +171,7 @@ + } + } + for (tz in tztab) { +- if (!zoneSeen[tz]) { ++ if (!zoneSeen[tz] && tz !~ /^Etc\//) { + printf "%s:%d: no Zone table for '%s'\n", \ + zone_table, tz2NR[tz], tz >>"/dev/stderr" + status = 1 +--- contrib/tzdata/europe.orig ++++ contrib/tzdata/europe +@@ -68,7 +68,6 @@ + # 0:00 GMT BST BDST Greenwich, British Summer + # 0:00 GMT IST Greenwich, Irish Summer + # 0:00 WET WEST WEMT Western Europe +-# 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937) + # 1:00 BST British Standard (1968-1971) + # 1:00 IST GMT Irish Standard (1968-) with winter DST + # 1:00 CET CEST CEMT Central Europe +@@ -1803,6 +1802,10 @@ + 1:00 Italy CE%sT 1980 + 1:00 EU CE%sT + ++# Kosovo ++# See Europe/Belgrade. ++ ++ + Link Europe/Rome Europe/Vatican + Link Europe/Rome Europe/San_Marino + +@@ -2153,6 +2156,10 @@ + # The data entries before 1945 are taken from + # https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm + ++# From Paul Eggert (2021-05-09): ++# I invented the abbreviations AMT for Amsterdam Mean Time and NST for ++# Netherlands Summer Time, used in the Netherlands from 1835 to 1937. ++ + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S + Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time + Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time +@@ -2379,12 +2386,10 @@ + Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 M + Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S + Rule Port 1946 only - Oct Sat>=1 23:00s 0 - +-Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S +-Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 - +-# Shanks & Pottenger say DST was observed in 1950; go with Whitman. ++# Whitman says DST was not observed in 1950; go with Shanks & Pottenger. + # Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger. +-Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S +-Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 - ++Rule Port 1947 1965 - Apr Sun>=1 2:00s 1:00 S ++Rule Port 1947 1965 - Oct Sun>=1 2:00s 0 - + Rule Port 1977 only - Mar 27 0:00s 1:00 S + Rule Port 1977 only - Sep 25 0:00s 0 - + Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S +@@ -2780,8 +2785,26 @@ + # says he remembers that Samara opted out of the 1992-01-19 exception + # 2 days before the switch. + # +-# +-# From Paul Eggert (2016-03-18): ++# From Alois Treindl (2022-02-15): ++# the Russian wikipedia page ++# https://ru.wikipedia.org/wiki/Московское_время#Перемещение_границы_применения_московского_времени_на_восток ++# contains the sentence (in Google translation) "In the autumn of ++# 1981, Arkhangelsk, Vologda, Yaroslavl, Ivanovo, Vladimir, Ryazan, ++# Lipetsk, Voronezh, Rostov-on-Don, Krasnodar and regions to the east ++# of those named (about 30 in total) parted ways with Moscow time. ++# However, the convenience of common time with Moscow turned out to be ++# decisive - in 1982, these regions again switched to Moscow time." ++# Shanks International atlas has similar information, and also the ++# Russian book Zaitsev A., Kutalev D. A new astrologer's reference ++# book. Coordinates of cities and time corrections, - The World of ++# Urania, 2012 (Russian: Зайцев А., Куталёв Д., Новый справочник ++# астролога. Координаты городов и временные поправки). ++# To me it seems that an extra zone is needed, which starts with LMT ++# util 1919, later follows Moscow since 1930, but deviates from it ++# between 1 October 1981 until 1 April 1982. ++# ++# ++# From Paul Eggert (2022-02-15): + # Given the above, we appear to be missing some Zone entries for the + # chaotic early 1980s in Russia. It's not clear what these entries + # should be. For now, sweep this under the rug and just document the +@@ -2828,7 +2851,7 @@ + 1:00 C-Eur CE%sT 1944 Apr 13 + 3:00 Russia MSK/MSD 1990 + 3:00 - MSK 1990 Jul 1 2:00 +- 2:00 - EET 1992 ++ 2:00 - EET 1992 Mar 20 + # Central Crimea used Moscow time 1994/1997. + # + # From Paul Eggert (2006-03-22): +@@ -2838,7 +2861,7 @@ + # sometime between the 1994 DST switches. Shanks & Pottenger simply say + # 1994-09-25 03:00, but that can't be right. For now, guess it + # changed in May. +- 2:00 E-Eur EE%sT 1994 May ++ 2:00 C-Eur EE%sT 1994 May + # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev. + 3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s + 3:00 1:00 MSD 1996 Oct 27 3:00s +@@ -3686,6 +3709,9 @@ + # + # Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. + ++# An extra-special abbreviation style is SET for Swedish Time (svensk ++# normaltid) 1879-1899, 3° west of the Stockholm Observatory. ++ + # Zone NAME STDOFF RULES FORMAT [UNTIL] + Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 + 1:00:14 - SET 1900 Jan 1 # Swedish Time +@@ -4002,6 +4028,27 @@ + + # Ukraine + # ++# From Alois Triendl (2014-03-01): ++# REGULATION A N O V A on March 20, 1992 N 139 ... means that from ++# 1992 on, Ukraine had DST with begin time at 02:00 am, on last Sunday ++# in March, and end time 03:00 am, last Sunday in September.... ++# CABINET OF MINISTERS OF UKRAINE RESOLUTION on May 13, 1996 N 509 ++# "On the order of computation time on the territory of Ukraine" .... ++# As this cabinet decision is from May 1996, it seems likely that the ++# transition in March 1996, which predates it, was still at 2:00 am ++# and not at 3:00 as would have been under EU rules. ++# This is why I have set the change to EU rules into May 1996, ++# so that the change in March is stil covered by the Ukraine rule. ++# The next change in October 1996 happened under EU rules.... ++# TZ database holds three other zones for Ukraine.... I have not yet ++# worked out the consequences for these three zones, as we (me and my ++# US colleague David Cochrane) are still trying to get more ++# information upon these local deviations from Kiev rules. ++# ++# From Paul Eggert (2022-02-08): ++# For now, assume that Ukraine's other three zones followed the same rules, ++# except that Crimea switched to Moscow time in 1994 as described elsewhere. ++ + # From Igor Karpov, who works for the Ukrainian Ministry of Justice, + # via Garrett Wollman (2003-01-27): + # BTW, I've found the official document on this matter. It's government +@@ -4091,7 +4138,7 @@ + 1:00 C-Eur CE%sT 1943 Nov 6 + 3:00 Russia MSK/MSD 1990 Jul 1 2:00 + 2:00 1:00 EEST 1991 Sep 29 3:00 +- 2:00 E-Eur EE%sT 1995 ++ 2:00 C-Eur EE%sT 1996 May 13 + 2:00 EU EE%sT + # Transcarpathia used CET 1990/1991. + # "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but +@@ -4104,8 +4151,8 @@ + 3:00 Russia MSK/MSD 1990 + 3:00 - MSK 1990 Jul 1 2:00 + 1:00 - CET 1991 Mar 31 3:00 +- 2:00 - EET 1992 +- 2:00 E-Eur EE%sT 1995 ++ 2:00 - EET 1992 Mar 20 ++ 2:00 C-Eur EE%sT 1996 May 13 + 2:00 EU EE%sT + # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991. + # "Zaporizhia" is the transliteration of the Ukrainian name, but +@@ -4118,7 +4165,8 @@ + 3:00 - MSK 1941 Aug 25 + 1:00 C-Eur CE%sT 1943 Oct 25 + 3:00 Russia MSK/MSD 1991 Mar 31 2:00 +- 2:00 E-Eur EE%sT 1995 ++ 2:00 E-Eur EE%sT 1992 Mar 20 ++ 2:00 C-Eur EE%sT 1996 May 13 + 2:00 EU EE%sT + + # Vatican City +--- contrib/tzdata/leap-seconds.list.orig ++++ contrib/tzdata/leap-seconds.list +@@ -204,10 +204,10 @@ + # current -- the update time stamp, the data and the name of the file + # will not change. + # +-# Updated through IERS Bulletin C61 +-# File expires on: 28 December 2021 ++# Updated through IERS Bulletin C63 ++# File expires on: 28 December 2022 + # +-#@ 3849638400 ++#@ 3881174400 + # + 2272060800 10 # 1 Jan 1972 + 2287785600 11 # 1 Jul 1972 +@@ -252,4 +252,4 @@ + # the hash line is also ignored in the + # computation. + # +-#h 2ab8253d d4380d28 75f01343 381504f8 8f8a4bfc ++#h 732b2044 5863a938 b7e43179 1339c710 ded63837 +--- contrib/tzdata/leapseconds.orig ++++ contrib/tzdata/leapseconds +@@ -72,11 +72,11 @@ + # Any additional leap seconds will come after this. + # This Expires line is commented out for now, + # so that pre-2020a zic implementations do not reject this file. +-#Expires 2021 Dec 28 00:00:00 ++#Expires 2022 Dec 28 00:00:00 + + # POSIX timestamps for the data in this file: + #updated 1467936000 (2016-07-08 00:00:00 UTC) +-#expires 1640649600 (2021-12-28 00:00:00 UTC) ++#expires 1672185600 (2022-12-28 00:00:00 UTC) + +-# Updated through IERS Bulletin C61 +-# File expires on: 28 December 2021 ++# Updated through IERS Bulletin C63 ++# File expires on: 28 December 2022 +--- contrib/tzdata/northamerica.orig ++++ contrib/tzdata/northamerica +@@ -729,7 +729,11 @@ + -11:00 US B%sT 1983 Oct 30 2:00 + -10:00 US AH%sT 1983 Nov 30 + -10:00 US H%sT +-# The following switches don't quite make our 1970 cutoff. ++# The following switches don't make our 1970 cutoff. ++# ++# Kiska observed Tokyo date and time during Japanese occupation from ++# 1942-06-06 to 1943-07-29, and similarly for Attu from 1942-06-07 to ++# 1943-05-29 (all dates American). Both islands are now uninhabited. + # + # Shanks writes that part of southwest Alaska (e.g. Aniak) + # switched from -11:00 to -10:00 on 1968-09-22 at 02:00, +@@ -825,6 +829,8 @@ + -7:00 - MST 1967 + -7:00 US M%sT 1968 Mar 21 + -7:00 - MST ++Link America/Phoenix America/Creston ++ + # From Arthur David Olson (1988-02-13): + # A writer from the Inter Tribal Council of Arizona, Inc., + # notes in private correspondence dated 1987-12-28 that "Presently, only the +@@ -1593,24 +1599,7 @@ + # From Paul Eggert (2020-01-10): + # See America/Toronto for most of Quebec, including Montreal. + # See America/Halifax for the Îles de la Madeleine and the Listuguj reserve. +-# +-# Matthews and Vincent (1998) also write that Quebec east of the -63 +-# meridian is supposed to observe AST, but residents as far east as +-# Natashquan use EST/EDT, and residents east of Natashquan use AST. +-# The Quebec department of justice writes in +-# "The situation in Minganie and Basse-Côte-Nord" +-# https://www.justice.gouv.qc.ca/en/department/ministre/functions-and-responsabilities/legal-time-in-quebec/the-situation-in-minganie-and-basse-cote-nord/ +-# that the coastal strip from just east of Natashquan to Blanc-Sablon +-# observes Atlantic standard time all year round. +-# This common practice was codified into law as of 2007; see Legal Time Act, +-# CQLR c T-5.1 <http://legisquebec.gouv.qc.ca/en/ShowDoc/cs/T-5.1>. +-# For lack of better info, guess this practice began around 1970, contra to +-# Shanks & Pottenger who have this region observing AST/ADT. +- +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Blanc-Sablon -3:48:28 - LMT 1884 +- -4:00 Canada A%sT 1970 +- -4:00 - AST ++# See America/Puerto_Rico for east of Natashquan. + + # Ontario + +@@ -1649,54 +1638,6 @@ + # time became a comic failure in Orillia. Toronto Star 2017-07-08. + # https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html + +-# From Paul Eggert (1997-10-17): +-# Mark Brader writes that an article in the 1997-10-14 Toronto Star +-# says that Atikokan, Ontario currently does not observe DST, +-# but will vote on 11-10 whether to use EST/EDT. +-# He also writes that the Ontario Time Act (1990, Chapter T.9) +-# http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html +-# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT. +-# Officially Atikokan is therefore on CST/CDT, and most likely this report +-# concerns a non-official time observed as a matter of local practice. +-# +-# From Paul Eggert (2000-10-02): +-# Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and +-# New Osnaburgh observe CST all year, that Big Trout Lake observes +-# CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in +-# violation of the official Ontario rules. +-# +-# From Paul Eggert (2006-07-09): +-# Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the +-# 2005-07-21 Chronicle-Journal, which said: +-# +-# The clocks in Atikokan stay set on standard time year-round. +-# This means they spend about half the time on central time and +-# the other half on eastern time. +-# +-# For the most part, the system works, Mayor Dennis Brown said. +-# +-# "The majority of businesses in Atikokan deal more with Eastern +-# Canada, but there are some that deal with Western Canada," he +-# said. "I don't see any changes happening here." +-# +-# Walton also writes "Supposedly Pickle Lake and Mishkeegogamang +-# [New Osnaburgh] follow the same practice." +- +-# From Garry McKinnon (2006-07-14) via Chris Walton: +-# I chatted with a member of my board who has an outstanding memory +-# and a long history in Atikokan (and in the telecom industry) and he +-# can say for certain that Atikokan has been practicing the current +-# time keeping since 1952, at least. +- +-# From Paul Eggert (2006-07-17): +-# Shanks & Pottenger say that Atikokan has agreed with Rainy River +-# ever since standard time was introduced, but the information from +-# McKinnon sounds more authoritative. For now, assume that Atikokan +-# switched to EST immediately after WWII era daylight saving time +-# ended. This matches the old (less-populous) America/Coral_Harbour +-# entry since our cutoff date of 1970, so we can move +-# America/Coral_Harbour to the 'backward' file. +- + # From Mark Brader (2010-03-06): + # + # Currently the database has: +@@ -1827,6 +1768,7 @@ + -5:00 Canada E%sT 1946 + -5:00 Toronto E%sT 1974 + -5:00 Canada E%sT ++Link America/Toronto America/Nassau + Zone America/Thunder_Bay -5:57:00 - LMT 1895 + -6:00 - CST 1910 + -5:00 - EST 1942 +@@ -1842,11 +1784,7 @@ + -6:00 Canada C%sT 1940 Sep 29 + -6:00 1:00 CDT 1942 Feb 9 2:00s + -6:00 Canada C%sT +-Zone America/Atikokan -6:06:28 - LMT 1895 +- -6:00 Canada C%sT 1940 Sep 29 +- -6:00 1:00 CDT 1942 Feb 9 2:00s +- -6:00 Canada C%sT 1945 Sep 30 2:00 +- -5:00 - EST ++# For Atikokan see America/Panama. + + + # Manitoba +@@ -2037,60 +1975,6 @@ + # Shanks & Pottenger write that since 1970 most of this region has + # been like Vancouver. + # Dawson Creek uses MST. Much of east BC is like Edmonton. +-# Matthews and Vincent (1998) write that Creston is like Dawson Creek. +- +-# It seems though that (re: Creston) is not entirely correct: +- +-# From Chris Walton (2011-12-01): +-# There are two areas within the Canadian province of British Columbia +-# that do not currently observe daylight saving: +-# a) The Creston Valley (includes the town of Creston and surrounding area) +-# b) The eastern half of the Peace River Regional District +-# (includes the cities of Dawson Creek and Fort St. John) +- +-# Earlier this year I stumbled across a detailed article about the time +-# keeping history of Creston; it was written by Tammy Hardwick who is the +-# manager of the Creston & District Museum. The article was written in May 2009. +-# http://www.ilovecreston.com/?p=articles&t=spec&ar=260 +-# According to the article, Creston has not changed its clocks since June 1918. +-# i.e. Creston has been stuck on UT-7 for 93 years. +-# Dawson Creek, on the other hand, changed its clocks as recently as April 1972. +- +-# Unfortunately the exact date for the time change in June 1918 remains +-# unknown and will be difficult to ascertain. I e-mailed Tammy a few months +-# ago to ask if Sunday June 2 was a reasonable guess. She said it was just +-# as plausible as any other date (in June). She also said that after writing +-# the article she had discovered another time change in 1916; this is the +-# subject of another article which she wrote in October 2010. +-# http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56 +- +-# Here is a summary of the three clock change events in Creston's history: +-# 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7) +-# Exact date unknown +-# 2. Oct 1916: switch to Pacific Standard Time (GMT-8) +-# Exact date in October unknown; Sunday October 1 is a reasonable guess. +-# 3. June 1918: switch to Pacific Daylight Time (GMT-7) +-# Exact date in June unknown; Sunday June 2 is a reasonable guess. +-# note 1: +-# On Oct 27/1918 when daylight saving ended in the rest of Canada, +-# Creston did not change its clocks. +-# note 2: +-# During WWII when the Federal Government legislated a mandatory clock change, +-# Creston did not oblige. +-# note 3: +-# There is no guarantee that Creston will remain on Mountain Standard Time +-# (UTC-7) forever. +-# The subject was debated at least once this year by the town Council. +-# http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html +- +-# During a period WWII, summer time (Daylight saying) was mandatory in Canada. +-# In Creston, that was handled by shifting the area to PST (-8:00) then applying +-# summer time to cause the offset to be -7:00, the same as it had been before +-# the change. It can be argued that the timezone abbreviation during this +-# period should be PDT rather than MST, but that doesn't seem important enough +-# (to anyone) to further complicate the rules. +- +-# The transition dates (and times) are guesses. + + # From Matt Johnson (2015-09-21): + # Fort Nelson, BC, Canada will cancel DST this year. So while previously they +@@ -2144,10 +2028,7 @@ + -8:00 Vanc P%sT 1987 + -8:00 Canada P%sT 2015 Mar 8 2:00 + -7:00 - MST +-Zone America/Creston -7:46:04 - LMT 1884 +- -7:00 - MST 1916 Oct 1 +- -8:00 - PST 1918 Jun 2 +- -7:00 - MST ++# For Creston see America/Phoenix. + + # Northwest Territories, Nunavut, Yukon + +@@ -2929,64 +2810,61 @@ + + # Anguilla + # Antigua and Barbuda +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. + +-# Bahamas +-# +-# For 1899 Milne gives -5:09:29.5; round that. +-# +-# From P Chan (2020-11-27, corrected on 2020-12-02): +-# There were two periods of DST observed in 1942-1945: 1942-05-01 +-# midnight to 1944-12-31 midnight and 1945-02-01 to 1945-10-17 midnight. +-# "midnight" should mean 24:00 from the context. +-# +-# War Time Order 1942 [1942-05-01] and War Time (No. 2) Order 1942 [1942-09-29] +-# Appendix to the Statutes of 7 George VI. and the Year 1942. p 34, 43 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA3-PA34 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA3-PA43 +-# +-# War Time Order 1943 [1943-03-31] and War Time Order 1944 [1943-12-29] +-# Appendix to the Statutes of 8 George VI. and the Year 1943. p 9-10, 28-29 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA4-PA9 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA4-PA28 +-# +-# War Time Order 1945 [1945-01-31] and the Order which revoke War Time Order +-# 1945 [1945-10-16] Appendix to the Statutes of 9 George VI. and the Year +-# 1945. p 160, 247-248 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA6-PA160 +-# https://books.google.com/books?id=5rlNAQAAIAAJ&pg=RA6-PA247 +-# +-# From Sue Williams (2006-12-07): +-# The Bahamas announced about a month ago that they plan to change their DST +-# rules to sync with the U.S. starting in 2007.... +-# http://www.jonesbahamas.com/?c=45&a=10412 ++# The Bahamas ++# See America/Toronto. + +-# Rule NAME FROM TO - IN ON AT SAVE LETTER/S +-Rule Bahamas 1942 only - May 1 24:00 1:00 W +-Rule Bahamas 1944 only - Dec 31 24:00 0 S +-Rule Bahamas 1945 only - Feb 1 0:00 1:00 W +-Rule Bahamas 1945 only - Aug 14 23:00u 1:00 P # Peace +-Rule Bahamas 1945 only - Oct 17 24:00 0 S +-Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S +-Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Nassau -5:09:30 - LMT 1912 Mar 2 +- -5:00 Bahamas E%sT 1976 +- -5:00 US E%sT + + # Barbados + + # For 1899 Milne gives -3:58:29.2; round that. + ++# From P Chan (2020-12-09 and 2020-12-11): ++# Standard time of GMT-4 was adopted in 1911. ++# Definition of Time Act, 1911 (1911-7) [1911-08-28] ++# 1912, Laws of Barbados (5 v.), OCLC Number: 919801291, Vol. 4, Image No. 522 ++# 1944, Laws of Barbados (5 v.), OCLC Number: 84548697, Vol. 4, Image No. 122 ++# http://llmc.com/browse.aspx?type=2&coll=85&div=297 ++# ++# DST was observed in 1942-44. ++# Defence (Daylight Saving) Regulations, 1942, 1942-04-13 ++# Defence (Daylight Saving) (Repeal) Regulations, 1942, 1942-08-22 ++# Defence (Daylight Saving) Regulations, 1943, 1943-04-16 ++# Defence (Daylight Saving) (Repeal) Regulations, 1943, 1943-09-01 ++# Defence (Daylight Saving) Regulations, 1944, 1944-03-21 ++# [Defence (Daylight Saving) (Amendment) Regulations 1944, 1944-03-28] ++# Defence (Daylight Saving) (Repeal) Regulations, 1944, 1944-08-30 ++# ++# 1914-, Subsidiary Legis., Annual Vols. OCLC Number: 226290591 ++# 1942: Image Nos. 527-528, 555-556 ++# 1943: Image Nos. 178-179, 198 ++# 1944: Image Nos. 113-115, 129 ++# http://llmc.com/titledescfull.aspx?type=2&coll=85&div=297&set=98437 ++# ++# From Tim Parenti (2021-02-20): ++# The transitions below are derived from P Chan's sources, except that the 1977 ++# through 1980 transitions are from Shanks & Pottenger since we have no better ++# data there. Of particular note, the 1944 DST regulation only advanced the ++# time to "exactly three and a half hours later than Greenwich mean time", as ++# opposed to "three hours" in the 1942 and 1943 regulations. ++ + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S ++Rule Barb 1942 only - Apr 19 5:00u 1:00 D ++Rule Barb 1942 only - Aug 31 6:00u 0 S ++Rule Barb 1943 only - May 2 5:00u 1:00 D ++Rule Barb 1943 only - Sep 5 6:00u 0 S ++Rule Barb 1944 only - Apr 10 5:00u 0:30 - ++Rule Barb 1944 only - Sep 10 6:00u 0 S + Rule Barb 1977 only - Jun 12 2:00 1:00 D + Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S + Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D + Rule Barb 1979 only - Sep 30 2:00 0 S + Rule Barb 1980 only - Sep 25 2:00 0 S + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown +- -3:58:29 - BMT 1932 # Bridgetown Mean Time ++Zone America/Barbados -3:58:29 - LMT 1911 Aug 28 # Bridgetown ++ -4:00 Barb A%sT 1944 ++ -4:00 Barb AST/-0330 1945 + -4:00 Barb A%sT + + # Belize +@@ -3148,6 +3026,9 @@ + -4:00 Canada A%sT 1976 + -4:00 US A%sT + ++# Caribbean Netherlands ++# See America/Puerto_Rico. ++ + # Cayman Is + # See America/Panama. + +@@ -3376,7 +3257,7 @@ + -5:00 Cuba C%sT + + # Dominica +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. + + # Dominican Republic + +@@ -3428,7 +3309,7 @@ + # Guadeloupe + # St Barthélemy + # St Martin (French part) +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. + + # Guatemala + # +@@ -3615,7 +3496,7 @@ + -4:00 - AST + + # Montserrat +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. + + # Nicaragua + # +@@ -3687,6 +3568,7 @@ + Zone America/Panama -5:18:08 - LMT 1890 + -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time + -5:00 - EST ++Link America/Panama America/Atikokan + Link America/Panama America/Cayman + + # Puerto Rico +@@ -3696,10 +3578,29 @@ + -4:00 - AST 1942 May 3 + -4:00 US A%sT 1946 + -4:00 - AST ++Link America/Puerto_Rico America/Anguilla ++Link America/Puerto_Rico America/Antigua ++Link America/Puerto_Rico America/Aruba ++Link America/Puerto_Rico America/Curacao ++Link America/Puerto_Rico America/Blanc-Sablon # Quebec (Lower North Shore) ++Link America/Puerto_Rico America/Dominica ++Link America/Puerto_Rico America/Grenada ++Link America/Puerto_Rico America/Guadeloupe ++Link America/Puerto_Rico America/Kralendijk # Caribbean Netherlands ++Link America/Puerto_Rico America/Lower_Princes # Sint Maarten ++Link America/Puerto_Rico America/Marigot # St Martin (French part) ++Link America/Puerto_Rico America/Montserrat ++Link America/Puerto_Rico America/Port_of_Spain # Trinidad & Tobago ++Link America/Puerto_Rico America/St_Barthelemy # St Barthélemy ++Link America/Puerto_Rico America/St_Kitts # St Kitts & Nevis ++Link America/Puerto_Rico America/St_Lucia ++Link America/Puerto_Rico America/St_Thomas # Virgin Islands (US) ++Link America/Puerto_Rico America/St_Vincent ++Link America/Puerto_Rico America/Tortola # Virgin Islands (UK) + + # St Kitts-Nevis + # St Lucia +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. + + # St Pierre and Miquelon + # There are too many St Pierres elsewhere, so we'll use 'Miquelon'. +@@ -3710,7 +3611,10 @@ + -3:00 Canada -03/-02 + + # St Vincent and the Grenadines +-# See America/Port_of_Spain. ++# See America/Puerto_Rico. ++ ++# Sint Maarten ++# See America/Puerto_Rico. + + # Turks and Caicos + # +@@ -3781,8 +3685,8 @@ + -5:00 US E%sT + + # British Virgin Is +-# Virgin Is +-# See America/Port_of_Spain. ++# US Virgin Is ++# See America/Puerto_Rico. + + + # Local Variables: +--- contrib/tzdata/southamerica.orig ++++ contrib/tzdata/southamerica +@@ -574,7 +574,7 @@ + -3:00 - -03 + + # Aruba +-Link America/Curacao America/Aruba ++# See America/Puerto_Rico. + + # Bolivia + # Zone NAME STDOFF RULES FORMAT [UNTIL] +@@ -1086,7 +1086,7 @@ + + # Chile + +-# From Paul Eggert (2015-04-03): ++# From Paul Eggert (2022-03-15): + # Shanks & Pottenger says America/Santiago introduced standard time in + # 1890 and rounds its UT offset to 70W40; guess that in practice this + # was the same offset as in 1916-1919. It also says Pacific/Easter +@@ -1109,7 +1109,7 @@ + # Historia de la hora oficial de Chile (retrieved 2012-10-24). See: + # https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm + # A fancier Spanish version (requiring mouse-clicking) is at: +-# http://www.horaoficial.cl/historia_hora.html ++# http://www.horaoficial.cl/historia_hora.php + # Conflicts between [1] and [2] were resolved as follows: + # + # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites +@@ -1118,7 +1118,8 @@ + # - [1] says SMT was -4:42:45, [2] says Chile's official time from + # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National + # Astronomical Observatory (OAN), then located in what is now +-# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. ++# Quinta Normal in Santiago. Go with [1], as this matches the meridian ++# referred to by the relevant Chilean laws to this day. + # + # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites + # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2]. +@@ -1140,6 +1141,32 @@ + # this is known to work for DST transitions starting in 2008 and + # may well be true for earlier transitions. + ++# From Tim Parenti (2022-03-15): ++# For a brief period of roughly six weeks in 1946, DST was only observed on an ++# emergency basis in specific regions of central Chile; namely, "the national ++# territory between the provinces of Coquimbo and Concepción, inclusive". ++# This was enacted by Decree 3,891, dated 1946-07-13, and took effect ++# 1946-07-14 24:00, advancing these central regions to -03. ++# https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19460715/#page/1 ++# The decree contemplated "[t]hat this advancement of the Official Time, even ++# though it has been proposed for the cities of Santiago and Valparaíso only, ++# must be agreed with that of other cities, due to the connection of various ++# activities that require it, such as, for example, the operation of rail ++# services". It was originally set to expire after 30 days but was extended ++# through 1946-08-31 by Decree 4,506, dated 1946-08-13. ++# https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19460814/#page/1 ++# ++# Law Number 8,522, promulgated 1946-08-27, reunified Chilean clocks at their ++# new "Summer Time" of -04, reckoned as that of "the meridian of the ++# Astronomical Observatory of Lo Espejo, advanced by 42 minutes and 45 ++# seconds". ++# https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19460828/#page/1 ++# After a brief "Winter Time" stint at -05 beginning 1947-04-01, Law Number ++# 8,777, promulgated 1947-05-17, established year-round -04 "from 23:00 on the ++# second day after it is published in the 'Diario Oficial'." It was published ++# on Monday 1947-05-19 and so took effect from Wednesday 1947-05-21 23:00. ++# https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19470519/#page/1 ++ + # From Eduardo Krell (1995-10-19): + # The law says to switch to DST at midnight [24:00] on the second SATURDAY + # of October.... The law is the same for March and October. +@@ -1298,12 +1325,12 @@ + # IATA SSIM anomalies: (1992-02) says 1992-03-14; + # (1996-09) says 1998-03-08. Ignore these. + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Santiago -4:42:46 - LMT 1890 +- -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time ++Zone America/Santiago -4:42:45 - LMT 1890 ++ -4:42:45 - SMT 1910 Jan 10 # Santiago Mean Time + -5:00 - -05 1916 Jul 1 +- -4:42:46 - SMT 1918 Sep 10 ++ -4:42:45 - SMT 1918 Sep 10 + -4:00 - -04 1919 Jul 1 +- -4:42:46 - SMT 1927 Sep 1 ++ -4:42:45 - SMT 1927 Sep 1 + -5:00 Chile -05/-04 1932 Sep 1 + -4:00 - -04 1942 Jun 1 + -5:00 - -05 1942 Aug 1 +@@ -1313,11 +1340,11 @@ + -5:00 - -05 1947 May 21 23:00 + -4:00 Chile -04/-03 + Zone America/Punta_Arenas -4:43:40 - LMT 1890 +- -4:42:46 - SMT 1910 Jan 10 ++ -4:42:45 - SMT 1910 Jan 10 + -5:00 - -05 1916 Jul 1 +- -4:42:46 - SMT 1918 Sep 10 ++ -4:42:45 - SMT 1918 Sep 10 + -4:00 - -04 1919 Jul 1 +- -4:42:46 - SMT 1927 Sep 1 ++ -4:42:45 - SMT 1927 Sep 1 + -5:00 Chile -05/-04 1932 Sep 1 + -4:00 - -04 1942 Jun 1 + -5:00 - -05 1942 Aug 1 +@@ -1369,35 +1396,14 @@ + # no information; probably like America/Bogota + + # Curaçao +- +-# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. ++# See America/Puerto_Rico. + # +-# From Paul Eggert (2006-03-22): +-# Shanks & Pottenger say that The Bottom and Philipsburg have been at +-# -4:00 since standard time was introduced on 1912-03-02; and that +-# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from +-# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say +-# Saba Island has been like Curaçao. +-# This all predates our 1970 cutoff, though. +-# +-# By July 2007 Curaçao and St Maarten are planned to become +-# associated states within the Netherlands, much like Aruba; +-# Bonaire, Saba and St Eustatius would become directly part of the +-# Netherlands as Kingdom Islands. This won't affect their time zones +-# though, as far as we know. +-# +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad +- -4:30 - -0430 1965 +- -4:00 - AST +- + # From Arthur David Olson (2011-06-15): + # use links for places with new iso3166 codes. + # The name "Lower Prince's Quarter" is both longer than fourteen characters +-# and contains an apostrophe; use "Lower_Princes" below. +- +-Link America/Curacao America/Lower_Princes # Sint Maarten +-Link America/Curacao America/Kralendijk # Caribbean Netherlands ++# and contains an apostrophe; use "Lower_Princes".... ++# From Paul Eggert (2021-09-29): ++# These backward-compatibility links now are in the 'northamerica' file. + + # Ecuador + # +@@ -1540,11 +1546,40 @@ + -3:00 - -03 + + # Guyana ++ ++# From P Chan (2020-11-27): ++# https://books.google.com/books?id=5-5CAQAAMAAJ&pg=SA1-PA547 ++# The Official Gazette of British Guiana. (New Series.) Vol. XL. July to ++# December, 1915, p 1547, lists as several notes: ++# "Local Mean Time 3 hours 52 mins. 39 secs. slow of Greenwich Mean Time ++# (Georgetown.) From 1st August, 1911, British Guiana Standard Mean Time 4 ++# hours slow of Greenwich Mean Time, by notice in Official Gazette on 1st July, ++# 1911. From 1st March, 1915, British Guiana Standard Mean Time 3 hours 45 ++# mins. 0 secs. slow of Greenwich Mean Time, by notice in Official Gazette on ++# 23rd January, 1915." ++# ++# https://parliament.gov.gy/documents/acts/10923-act_no._27_of_1975_-_interpretation_and_general_clauses_(amendment)_act_1975.pdf ++# Interpretation and general clauses (Amendment) Act 1975 (Act No. 27 of 1975) ++# [dated 1975-07-31] ++# "This Act...shall come into operation on 1st August, 1975." ++# "...where any expression of time occurs...the time referred to shall signify ++# the standard time of Guyana which shall be three hours behind Greenwich Mean ++# Time." ++# ++# Circular No. 10/1992 dated 1992-03-20 ++# https://dps.gov.gy/wp-content/uploads/2018/12/1992-03-20-Circular-010.pdf ++# "...cabinet has decided that with effect from Sunday 29th March, 1992, Guyana ++# Standard Time would be re-established at 01:00 hours by adjusting the hands ++# of the clock back to 24:00 hours." ++# Legislated in the Interpretation and general clauses (Amendment) Act 1992 ++# (Act No. 6 of 1992) [passed 1992-03-27, published 1992-04-18] ++# https://parliament.gov.gy/documents/acts/5885-6_of_1992_interpretation_and_general_clauses_(amendment)_act_1992.pdf ++ + # Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown +- -3:45 - -0345 1975 Jul 31 +- -3:00 - -03 1991 +-# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. ++Zone America/Guyana -3:52:39 - LMT 1911 Aug 1 # Georgetown ++ -4:00 - -04 1915 Mar 1 ++ -3:45 - -0345 1975 Aug 1 ++ -3:00 - -03 1992 Mar 29 1:00 + -4:00 - -04 + + # Paraguay +@@ -1685,24 +1720,7 @@ + -3:00 - -03 + + # Trinidad and Tobago +-# Zone NAME STDOFF RULES FORMAT [UNTIL] +-Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 +- -4:00 - AST +- +-# These all agree with Trinidad and Tobago since 1970. +-Link America/Port_of_Spain America/Anguilla +-Link America/Port_of_Spain America/Antigua +-Link America/Port_of_Spain America/Dominica +-Link America/Port_of_Spain America/Grenada +-Link America/Port_of_Spain America/Guadeloupe +-Link America/Port_of_Spain America/Marigot # St Martin (French part) +-Link America/Port_of_Spain America/Montserrat +-Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy +-Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis +-Link America/Port_of_Spain America/St_Lucia +-Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) +-Link America/Port_of_Spain America/St_Vincent +-Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) ++# See America/Puerto_Rico. + + # Uruguay + # From Paul Eggert (1993-11-18): +--- contrib/tzdata/theory.html.orig ++++ contrib/tzdata/theory.html +@@ -42,12 +42,13 @@ + (1970-01-01 00:00:00 <a + href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time"><abbr + title="Coordinated Universal Time">UTC</abbr></a>). +-The database labels each timezone with a notable location and +-records all known clock transitions for that location. + Although 1970 is a somewhat-arbitrary cutoff, there are significant + challenges to moving the cutoff earlier even by a decade or two, due + to the wide variety of local practices before computer timekeeping + became prevalent. ++Most timezones correspond to a notable location and the database ++records all known clock transitions for that location; ++some timezones correspond instead to a fixed <abbr>UTC</abbr> offset. + </p> + + <p> +@@ -58,8 +59,9 @@ + with current and future timestamps in the traditional North + American mountain time zone can choose from the timezones + <code>America/Denver</code> which observes US-style daylight saving +-time, <code>America/Mazatlan</code> which observes Mexican-style DST, +-and <code>America/Phoenix</code> which does not observe DST. ++time (<abbr>DST</abbr>), ++<code>America/Mazatlan</code> which observes Mexican-style <abbr>DST</abbr>, ++and <code>America/Phoenix</code> which does not observe <abbr>DST</abbr>. + Applications that also deal with past timestamps in the mountain time + zone can choose from over a dozen timezones, such as + <code>America/Boise</code>, <code>America/Edmonton</code>, and +@@ -68,7 +70,7 @@ + </p> + + <p> +-Clock transitions before 1970 are recorded for each timezone, ++Clock transitions before 1970 are recorded for location-based timezones, + because most systems support timestamps before 1970 and could + misbehave if data entries were omitted for pre-1970 transitions. + However, the database is not designed for and does not suffice for +@@ -190,8 +192,8 @@ + <code>TZ</code> strings</a>. + A file name component must not exceed 14 characters or start with + '<code>-</code>'. +- E.g., prefer <code>Asia/Brunei</code> to +- <code>Asia/Bandar_Seri_Begawan</code>. ++ E.g., prefer <code>America/Noronha</code> to ++ <code>America/Fernando_de_Noronha</code>. + Exceptions: see the discussion of legacy names below. + </li> + <li> +@@ -294,7 +296,7 @@ + </li> + <li> + If a name is changed, put its old spelling in the +- '<code>backward</code>' file. ++ '<code>backward</code>' file as a link to the new spelling. + This means old spellings will continue to work. + Ordinarily a name change should occur only in the rare case when + a location's consensus English-language spelling changes; for example, +@@ -346,22 +348,37 @@ + </ul> + + <p> +-The file '<code>zone1970.tab</code>' lists geographical locations used ++The file <code>zone1970.tab</code> lists geographical locations used + to name timezones. + It is intended to be an exhaustive list of names for geographic + regions as described above; this is a subset of the timezones in the data. +-Although a '<code>zone1970.tab</code>' location's ++Although a <code>zone1970.tab</code> location's + <a href="https://en.wikipedia.org/wiki/Longitude">longitude</a> + corresponds to + its <a href="https://en.wikipedia.org/wiki/Local_mean_time">local mean + time (<abbr>LMT</abbr>)</a> offset with one hour for every 15° + east longitude, this relationship is not exact. ++The backward-compatibility file <code>zone.tab</code> is similar ++but conforms to the older-version guidelines related to <abbr>ISO</abbr> 3166-1; ++it lists only one country code per entry and unlike <code>zone1970.tab</code> ++it can list names defined in <code>backward</code>. + </p> + + <p> +-Excluding '<code>backward</code>' should not affect the other data. +-If '<code>backward</code>' is excluded, excluding +-'<code>etcetera</code>' should not affect the remaining data. ++The database defines each timezone name to be a zone, or a link to a zone. ++The source file <code>backward</code> defines links for backward ++compatibility; it does not define zones. ++Although <code>backward</code> was originally designed to be optional, ++nowadays distributions typically use it ++and no great weight should be attached to whether a link ++is defined in <code>backward</code> or in some other file. ++The source file <code>etcetera</code> defines names that may be useful ++on platforms that do not support POSIX-style <code>TZ</code> strings; ++no other source file other than <code>backward</code> ++contains links to its zones. ++One of <code>etcetera</code>'s names is <code>GMT</code>, ++used by functions like <code>gmtime</code> to obtain leap ++second information on platforms that support leap seconds. + </p> + </section> + +@@ -473,10 +490,10 @@ + + <p> + <small>These abbreviations are: +- AMT Amsterdam, Asunción, Athens; ++ AMT Asunción, Athens; + BMT Baghdad, Bangkok, Batavia, Bermuda, Bern, Bogotá, Bridgetown, + Brussels, Bucharest; +- CMT Calamarca, Caracas, Chisinau, Colón, Copenhagen, Córdoba; ++ CMT Calamarca, Caracas, Chisinau, Colón, Córdoba; + DMT Dublin/Dunsink; + EMT Easter; + FFMT Fort-de-France; +@@ -499,7 +516,8 @@ + SMT Santiago, Simferopol, Singapore, Stanley; + TBMT Tbilisi; + TMT Tallinn, Tehran; +- WMT Warsaw</small>. ++ WMT Warsaw; ++ ZMT Zomba.</small> + </p> + + <p> +@@ -513,9 +531,7 @@ + 1880–1916, + MMT/MST/MDST for Moscow 1880–1919, and + RMT/LST for Riga Mean Time and Latvian Summer time 1880–1926. +- An extra-special case is SET for Swedish Time (<em>svensk +- normaltid</em>) 1879–1899, 3° west of the Stockholm +- Observatory.</small> ++ </small> + </p> + </li> + <li> +@@ -702,11 +718,9 @@ + <li> + Sometimes historical timekeeping was specified more precisely + than what the <code><abbr>tz</abbr></code> code can handle. +- For example, from 1909 to 1937 <a +- href="https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm" +- hreflang="nl">Netherlands clocks</a> were legally Amsterdam Mean ++ For example, from 1880 to 1916 clocks in Ireland observed Dublin Mean + Time (estimated to be <abbr>UT</abbr> +- +00:19:32.13), but the <code><abbr>tz</abbr></code> ++ −00:25:21.1), but the <code><abbr>tz</abbr></code> + code cannot represent the fractional second. + In practice these old specifications were rarely if ever + implemented to subsecond precision. +@@ -753,7 +767,8 @@ + the Western 06:00 to be 12:00. These practices are largely outside + the scope of the <code><abbr>tz</abbr></code> code and data, which + provide only limited support for date and time localization +- such as that required by POSIX. If DST is not used a different time zone ++ such as that required by POSIX. ++ If <abbr>DST</abbr> is not used a different time zone + can often do the trick; for example, in Kenya a <code>TZ</code> setting + like <code><-03>3</code> or <code>America/Cayenne</code> starts + the day six hours later than <code>Africa/Nairobi</code> does. +@@ -1271,7 +1286,8 @@ + counts of seconds since the POSIX epoch normally include leap seconds, + as opposed to POSIX <code>time_t</code> counts which exclude leap seconds. + This modified timescale is converted to <abbr>UTC</abbr> +-at the same point that time zone and DST adjustments are applied – ++at the same point that time zone and <abbr>DST</abbr> ++adjustments are applied – + namely, at calls to <code>localtime</code> and analogous functions – + and the process is driven by leap second information + stored in alternate versions of the <abbr>TZif</abbr> files. +--- contrib/tzdata/version.orig ++++ contrib/tzdata/version +@@ -1 +1 @@ +-2021a ++2022a +--- contrib/tzdata/ziguard.awk.orig ++++ contrib/tzdata/ziguard.awk +@@ -104,25 +104,32 @@ + } + if (!vanguard && $1 == "Rule" && $2 == "Morocco" && 2019 <= $3) { + if ($9 == "0") { ++ last_std_date = $3 " " $6 " " $7 " " $8 + sub(/\t0\t/, "\t1:00\t") + } else { + sub(/\t-1:00\t/, "\t0\t") + } + } + if (!vanguard && $1 == "1:00" && $2 == "Morocco" && $3 == "+01/+00") { +- sub(/1:00\tMorocco\t\+01\/\+00$/, "0:00\tMorocco\t+00/+01") ++ # This introduces a transition from 01:59:59 +00 to 03:00:00 +01 ++ # with both times being standard (i.e., a change to standard UT offset). ++ # This is rearguard's way to approximate the actual prediction, ++ # which is that of an ordinary transition from DST to standard time. ++ sub(/1:00\tMorocco\t\+01\/\+00$/, ++ "0:00\tMorocco\t+00/+01\t" last_std_date "\n\t\t\t 1:00\t-\t+01") + } + } + +-# If a Link line is followed by a Zone line for the same data, comment ++# If a Link line is followed by a Link or Zone line for the same data, comment + # out the Link line. This can happen if backzone overrides a Link +-# with a Zone. +-/^Link/ { +- linkline[$3] = NR +-} ++# with a Zone or a different Link. + /^Zone/ { + sub(/^Link/, "#Link", line[linkline[$2]]) + } ++/^Link/ { ++ sub(/^Link/, "#Link", line[linkline[$3]]) ++ linkline[$3] = NR ++} + + { line[NR] = $0 } + +--- contrib/tzdata/zone.tab.orig ++++ contrib/tzdata/zone.tab +@@ -3,7 +3,7 @@ + # This file is in the public domain, so clarified as of + # 2009-05-17 by Arthur David Olson. + # +-# From Paul Eggert (2018-06-27): ++# From Paul Eggert (2021-09-20): + # This file is intended as a backward-compatibility aid for older programs. + # New programs should use zone1970.tab. This file is like zone1970.tab (see + # zone1970.tab's comments), but with the following additional restrictions: +@@ -16,6 +16,9 @@ + # clocks have agreed since 1970; this is a narrower definition than + # that of zone1970.tab. + # ++# Unlike zone1970.tab, a row's third column can be a Link from ++# 'backward' instead of a Zone. ++# + # This table is intended as an aid for users, to help them select timezones + # appropriate for their practical needs. It is not intended to take or + # endorse any position on legal or territorial claims. +@@ -228,7 +231,7 @@ + KG +4254+07436 Asia/Bishkek + KH +1133+10455 Asia/Phnom_Penh + KI +0125+17300 Pacific/Tarawa Gilbert Islands +-KI -0308-17105 Pacific/Enderbury Phoenix Islands ++KI -0247-17143 Pacific/Kanton Phoenix Islands + KI +0152-15720 Pacific/Kiritimati Line Islands + KM -1141+04316 Indian/Comoro + KN +1718-06243 America/St_Kitts +@@ -391,7 +394,7 @@ + TL -0833+12535 Asia/Dili + TM +3757+05823 Asia/Ashgabat + TN +3648+01011 Africa/Tunis +-TO -2110-17510 Pacific/Tongatapu ++TO -210800-1751200 Pacific/Tongatapu + TR +4101+02858 Europe/Istanbul + TT +1039-06131 America/Port_of_Spain + TV -0831+17913 Pacific/Funafuti +--- contrib/tzdata/zone1970.tab.orig ++++ contrib/tzdata/zone1970.tab +@@ -41,11 +41,9 @@ + AM +4011+04430 Asia/Yerevan + AQ -6617+11031 Antarctica/Casey Casey + AQ -6835+07758 Antarctica/Davis Davis +-AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville + AQ -6736+06253 Antarctica/Mawson Mawson + AQ -6448-06406 Antarctica/Palmer Palmer + AQ -6734-06808 Antarctica/Rothera Rothera +-AQ -690022+0393524 Antarctica/Syowa Syowa + AQ -720041+0023206 Antarctica/Troll Troll + AQ -7824+10654 Antarctica/Vostok Vostok + AR -3436-05827 America/Argentina/Buenos_Aires Buenos Aires (BA, CF) +@@ -98,7 +96,6 @@ + BR -0308-06001 America/Manaus Amazonas (east) + BR -0640-06952 America/Eirunepe Amazonas (west) + BR -0958-06748 America/Rio_Branco Acre +-BS +2505-07721 America/Nassau + BT +2728+08939 Asia/Thimphu + BY +5354+02734 Europe/Minsk + BZ +1730-08812 America/Belize +@@ -107,13 +104,11 @@ + CA +4612-05957 America/Glace_Bay Atlantic - NS (Cape Breton) + CA +4606-06447 America/Moncton Atlantic - New Brunswick + CA +5320-06025 America/Goose_Bay Atlantic - Labrador (most areas) +-CA +5125-05707 America/Blanc-Sablon AST - QC (Lower North Shore) +-CA +4339-07923 America/Toronto Eastern - ON, QC (most areas) ++CA,BS +4339-07923 America/Toronto Eastern - ON, QC (most areas), Bahamas + CA +4901-08816 America/Nipigon Eastern - ON, QC (no DST 1967-73) + CA +4823-08915 America/Thunder_Bay Eastern - ON (Thunder Bay) + CA +6344-06828 America/Iqaluit Eastern - NU (most east areas) + CA +6608-06544 America/Pangnirtung Eastern - NU (Pangnirtung) +-CA +484531-0913718 America/Atikokan EST - ON (Atikokan); NU (Coral H) + CA +4953-09709 America/Winnipeg Central - ON (west); Manitoba + CA +4843-09434 America/Rainy_River Central - ON (Rainy R, Ft Frances) + CA +744144-0944945 America/Resolute Central - NU (Resolute) +@@ -124,7 +119,6 @@ + CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) + CA +6227-11421 America/Yellowknife Mountain - NT (central) + CA +682059-1334300 America/Inuvik Mountain - NT (west) +-CA +4906-11631 America/Creston MST - BC (Creston) + CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) + CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) + CA +6043-13503 America/Whitehorse MST - Yukon (east) +@@ -132,7 +126,7 @@ + CA +4916-12307 America/Vancouver Pacific - BC (most areas) + CC -1210+09655 Indian/Cocos + CH,DE,LI +4723+00832 Europe/Zurich Swiss time +-CI,BF,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan ++CI,BF,GH,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan + CK -2114-15946 Pacific/Rarotonga + CL -3327-07040 America/Santiago Chile (most areas) + CL -5309-07055 America/Punta_Arenas Region of Magallanes +@@ -143,7 +137,6 @@ + CR +0956-08405 America/Costa_Rica + CU +2308-08222 America/Havana + CV +1455-02331 Atlantic/Cape_Verde +-CW,AW,BQ,SX +1211-06900 America/Curacao + CX -1025+10543 Indian/Christmas + CY +3510+03322 Asia/Nicosia Cyprus (most areas) + CY +3507+03357 Asia/Famagusta Northern Cyprus +@@ -171,7 +164,6 @@ + GB,GG,IM,JE +513030-0000731 Europe/London + GE +4143+04449 Asia/Tbilisi + GF +0456-05220 America/Cayenne +-GH +0533-00013 Africa/Accra + GI +3608-00521 Europe/Gibraltar + GL +6411-05144 America/Nuuk Greenland (most areas) + GL +7646-01840 America/Danmarkshavn National Park (east coast) +@@ -205,7 +197,7 @@ + KE,DJ,ER,ET,KM,MG,SO,TZ,UG,YT -0117+03649 Africa/Nairobi + KG +4254+07436 Asia/Bishkek + KI +0125+17300 Pacific/Tarawa Gilbert Islands +-KI -0308-17105 Pacific/Enderbury Phoenix Islands ++KI -0247-17143 Pacific/Kanton Phoenix Islands + KI +0152-15720 Pacific/Kiritimati Line Islands + KP +3901+12545 Asia/Pyongyang + KR +3733+12658 Asia/Seoul +@@ -263,19 +255,19 @@ + NU -1901-16955 Pacific/Niue + NZ,AQ -3652+17446 Pacific/Auckland New Zealand time + NZ -4357-17633 Pacific/Chatham Chatham Islands +-PA,KY +0858-07932 America/Panama ++PA,CA,KY +0858-07932 America/Panama EST - Panama, Cayman, ON (Atikokan), NU (Coral H) + PE -1203-07703 America/Lima + PF -1732-14934 Pacific/Tahiti Society Islands + PF -0900-13930 Pacific/Marquesas Marquesas Islands + PF -2308-13457 Pacific/Gambier Gambier Islands +-PG -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas) ++PG,AQ -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas), Dumont d'Urville + PG -0613+15534 Pacific/Bougainville Bougainville + PH +1435+12100 Asia/Manila + PK +2452+06703 Asia/Karachi + PL +5215+02100 Europe/Warsaw + PM +4703-05620 America/Miquelon + PN -2504-13005 Pacific/Pitcairn +-PR +182806-0660622 America/Puerto_Rico ++PR,AG,CA,AI,AW,BL,BQ,CW,DM,GD,GP,KN,LC,MF,MS,SX,TT,VC,VG,VI +182806-0660622 America/Puerto_Rico AST + PS +3130+03428 Asia/Gaza Gaza Strip + PS +313200+0350542 Asia/Hebron West Bank + PT +3843-00908 Europe/Lisbon Portugal (mainland) +@@ -315,12 +307,12 @@ + RU +6728+15343 Asia/Srednekolymsk MSK+08 - Sakha (E); North Kuril Is + RU +5301+15839 Asia/Kamchatka MSK+09 - Kamchatka + RU +6445+17729 Asia/Anadyr MSK+09 - Bering Sea +-SA,KW,YE +2438+04643 Asia/Riyadh ++SA,AQ,KW,YE +2438+04643 Asia/Riyadh Arabia, Syowa + SB -0932+16012 Pacific/Guadalcanal + SC -0440+05528 Indian/Mahe + SD +1536+03232 Africa/Khartoum + SE +5920+01803 Europe/Stockholm +-SG +0117+10351 Asia/Singapore ++SG,MY +0117+10351 Asia/Singapore Singapore, peninsular Malaysia + SR +0550-05510 America/Paramaribo + SS +0451+03137 Africa/Juba + ST +0020+00644 Africa/Sao_Tome +@@ -335,9 +327,8 @@ + TL -0833+12535 Asia/Dili + TM +3757+05823 Asia/Ashgabat + TN +3648+01011 Africa/Tunis +-TO -2110-17510 Pacific/Tongatapu ++TO -210800-1751200 Pacific/Tongatapu + TR +4101+02858 Europe/Istanbul +-TT,AG,AI,BL,DM,GD,GP,KN,LC,MF,MS,VC,VG,VI +1039-06131 America/Port_of_Spain + TV -0831+17913 Pacific/Funafuti + TW +2503+12130 Asia/Taipei + UA +5026+03031 Europe/Kiev Ukraine (most areas) +@@ -363,7 +354,7 @@ + US +471551-1014640 America/North_Dakota/Beulah Central - ND (Mercer) + US +394421-1045903 America/Denver Mountain (most areas) + US +433649-1161209 America/Boise Mountain - ID (south); OR (east) +-US +332654-1120424 America/Phoenix MST - Arizona (except Navajo) ++US,CA +332654-1120424 America/Phoenix MST - Arizona (except Navajo), Creston BC + US +340308-1181434 America/Los_Angeles Pacific + US +611305-1495401 America/Anchorage Alaska (most areas) + US +581807-1342511 America/Juneau Alaska - Juneau area |