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authorPhilip Paeps <philip@FreeBSD.org>2019-07-02 01:06:03 +0000
committerPhilip Paeps <philip@FreeBSD.org>2019-07-02 01:06:03 +0000
commit8d01e58d3f473100bffc535573c50bf0f7865179 (patch)
treec99837d75f111f0ed0ad4b2e65bf30f335096c11
parentbeecab94238e98475d145990b5ea9f66bb871f03 (diff)
downloadsrc-8d01e58d3f473100bffc535573c50bf0f7865179.tar.gz
src-8d01e58d3f473100bffc535573c50bf0f7865179.zip
Import tzdata 2019bvendor/tzdata/tzdata2019b
Notes
Notes: svn path=/vendor/tzdata/dist/; revision=349590 svn path=/vendor/tzdata/tzdata2019b/; revision=349591; tag=vendor/tzdata/tzdata2019b
-rw-r--r--Makefile45
-rw-r--r--NEWS104
-rw-r--r--africa170
-rw-r--r--antarctica14
-rw-r--r--asia216
-rw-r--r--australasia112
-rw-r--r--backzone2
-rw-r--r--checktab.awk9
-rw-r--r--europe110
-rw-r--r--factory2
-rw-r--r--northamerica165
-rw-r--r--pacificnew2
-rw-r--r--southamerica66
-rw-r--r--systemv2
-rw-r--r--theory.html26
-rw-r--r--version2
-rw-r--r--zishrink.awk44
-rw-r--r--zone.tab5
-rw-r--r--zone1970.tab3
-rwxr-xr-xzoneinfo2tdf.pl2
20 files changed, 720 insertions, 381 deletions
diff --git a/Makefile b/Makefile
index 25f1d357867b..fec0a4f7eb36 100644
--- a/Makefile
+++ b/Makefile
@@ -35,11 +35,13 @@ DATAFORM= main
LOCALTIME= GMT
-# If you want something other than Eastern United States time as a template
-# for handling ruleless POSIX-style timezone environment variables,
+# The POSIXRULES macro controls interpretation of nonstandard and obsolete
+# POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules.
+# In the reference implementation, if you want something other than Eastern
+# United States time as a template for handling these settings, you can
# change the line below (after finding the timezone you want in the
# one of the $(TDATA) source files, or adding it to a source file).
-# A ruleless environment setting like TZ='CST6CDT' uses the rules in the
+# A setting like TZ='EET-2EEST' is supposed to use the rules in the
# template file to determine "spring forward" and "fall back" days and
# times; the environment variable itself specifies UT offsets of standard and
# daylight saving time.
@@ -49,6 +51,17 @@ LOCALTIME= GMT
# Use the command
# make zonenames
# to get a list of the values you can use for POSIXRULES.
+#
+# If POSIXRULES is empty, no template is installed; this is the intended
+# future default for POSIXRULES.
+#
+# Nonempty POSIXRULES is obsolete and should not be relied on, because:
+# * 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.
+# In short, software should avoid ruleless settings like TZ='EET-2EEST'
+# and so should not depend on the value of POSIXRULES.
POSIXRULES= America/New_York
@@ -231,6 +244,13 @@ LDLIBS=
# other than simply getting garbage data
# -DUSE_LTZ=0 to build zdump with the system time zone library
# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
+# -DZIC_BLOAT_DEFAULT=\"slim\" to default zic's -b option to "slim", and
+# similarly for "fat". Fat TZif files work around incompatibilities
+# and bugs in some TZif readers, notably readers that mishandle 64-bit
+# data in TZif files. Slim TZif files are more efficient and do not
+# work around these incompatibilities and bugs. If not given, the
+# current default is "fat" but this is intended to change as readers
+# requiring fat files often mishandle timestamps after 2037 anyway.
# -DZIC_MAX_ABBR_LEN_WO_WARN=3
# (or some other number) to set the maximum time zone abbreviation length
# that zic will accept without a warning (the default is 6)
@@ -364,7 +384,9 @@ ZIC= $(zic) $(ZFLAGS)
# To shrink the size of installed TZif files,
# append "-r @N" to omit data before N-seconds-after-the-Epoch.
-# See the zic man page for more about -r.
+# You can also append "-b slim" if that is not already the default;
+# see ZIC_BLOAT_DEFAULT above.
+# See the zic man page for more about -b and -r.
ZFLAGS=
# How to use zic to install TZif files.
@@ -388,6 +410,9 @@ KSHELL= /bin/bash
# Name of curl <https://curl.haxx.se/>, used for HTML validation.
CURL= curl
+# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
+GPG= gpg
+
# The path where SGML DTDs are kept and the catalog file(s) to use when
# validating HTML 4.01. The default should work on both Debian and Red Hat.
SGML_TOPDIR= /usr
@@ -562,7 +587,9 @@ install: all $(DATA) $(REDO) $(MANS)
'$(DESTDIR)$(LIBDIR)' \
'$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
'$(DESTDIR)$(MANDIR)/man8'
- $(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES) \
+ $(ZIC_INSTALL) -l $(LOCALTIME) \
+ `case '$(POSIXRULES)' in ?*) echo '-p';; esac \
+ ` $(POSIXRULES) \
-t '$(DESTDIR)$(TZDEFAULT)'
cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
cp tzselect '$(DESTDIR)$(BINDIR)/.'
@@ -781,12 +808,6 @@ CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
$(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
- $(AWK) '/^[^#]/ {print $$1}' iso3166.tab | LC_ALL=C sort -cu
- $(AWK) '/^[^#]/ {print $$1}' zone.tab | LC_ALL=C sort -c
- $(AWK) '/^[^#]/ {print substr($$0, 1, 2)}' zone1970.tab | \
- LC_ALL=C sort -c
- $(AWK) '/^[^#]/ $(CHECK_CC_LIST)' zone1970.tab | \
- LC_ALL=C sort -cu
touch $@
check_links: checklinks.awk $(TDATA_TO_CHECK) tzdata.zi
@@ -1051,7 +1072,7 @@ tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz
tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz
$(ALL_ASC):
- gpg2 --armor --detach-sign $?
+ $(GPG) --armor --detach-sign $?
TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T
typecheck: typecheck_long_long typecheck_unsigned
diff --git a/NEWS b/NEWS
index 9d0e9c0ee3fa..8b05f8f13084 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,100 @@
News for the tz database
-Release 20198 - 2019-03-25 22:01:33 -0700
+Release 2019b - 2019-07-01 00:09:53 -0700
+
+ Briefly:
+ Brazil no longer observes DST.
+ 'zic -b slim' outputs smaller TZif files; please try it out.
+ Palestine's 2019 spring-forward transition was on 03-29, not 03-30.
+
+ Changes to future timestamps
+
+ Brazil has canceled DST and will stay on standard time indefinitely.
+ (Thanks to Steffen Thorsen, Marcus Diniz, and Daniel Soares de
+ Oliveira.)
+
+ Predictions for Morocco now go through 2087 instead of 2037, to
+ work around a problem on newlib when using TZif files output by
+ zic 2019a or earlier. (Problem reported by David Gauchard.)
+
+ Changes to past and future timestamps
+
+ Palestine's 2019 spring transition was 03-29 at 00:00, not 03-30
+ at 01:00. (Thanks to Sharef Mustafa and Even Scharning.) Guess
+ future transitions to be March's last Friday at 00:00.
+
+ Changes to past timestamps
+
+ Hong Kong's 1941-06-15 spring-forward transition was at 03:00, not
+ 03:30. Its 1945 transition from JST to HKT was on 11-18 at 02:00,
+ not 09-15 at 00:00. In 1946 its spring-forward transition was on
+ 04-21 at 00:00, not the previous day at 03:30. From 1946 through
+ 1952 its fall-back transitions occurred at 04:30, not at 03:30.
+ In 1947 its fall-back transition was on 11-30, not 12-30.
+ (Thanks to P Chan.)
+
+ Changes to past time zone abbreviations
+
+ Italy's 1866 transition to Rome Mean Time was on December 12, not
+ September 22. This affects only the time zone abbreviation for
+ Europe/Rome between those dates. (Thanks to Stephen Trainor and
+ Luigi Rosa.)
+
+ Changes affecting metadata only
+
+ Add info about the Crimea situation in zone1970.tab and zone.tab.
+ (Problem reported by Serhii Demediuk.)
+
+ Changes to code
+
+ zic's new -b option supports a way to control data bloat and to
+ test for year-2038 bugs in software that reads TZif files.
+ 'zic -b fat' and 'zic -b slim' generate larger and smaller output;
+ for example, changing from fat to slim shrinks the Europe/London
+ file from 3648 to 1599 bytes, saving about 56%. Fat and slim
+ files represent the same set of timestamps and use the same TZif
+ format as documented in tzfile(5) and in Internet RFC 8536.
+ Fat format attempts to work around bugs or incompatibilities in
+ older software, notably software that mishandles 64-bit TZif data
+ or uses obsolete TZ strings like "EET-2EEST" that lack DST rules.
+ Slim format is more efficient and does not work around 64-bit bugs
+ or obsolete TZ strings. Currently zic defaults to fat format
+ unless you compile with -DZIC_BLOAT_DEFAULT=\"slim\"; this
+ out-of-the-box default is intended to change in future releases
+ as the buggy software often mishandles timestamps anyway.
+
+ zic no longer treats a set of rules ending in 2037 specially.
+ Previously, zic assumed that such a ruleset meant that future
+ timestamps could not be predicted, and therefore omitted a
+ POSIX-like TZ string in the TZif output. The old behavior is no
+ longer needed for current tzdata, and caused problems with newlib
+ when used with older tzdata (reported by David Gauchard).
+
+ zic no longer generates some artifact transitions. For example,
+ Europe/London no longer has a no-op transition in January 1996.
+
+ Changes to build procedure
+
+ tzdata.zi now assumes zic 2017c or later. This shrinks tzdata.zi
+ by a percent or so.
+
+ Changes to documentation and commentary
+
+ The Makefile now documents the POSIXRULES macro as being obsolete,
+ and similarly, zic's -p POSIXRULES option is now documented as
+ being obsolete. Although the POSIXRULES feature still exists and
+ works as before, in practice it is rarely used for its intended
+ purpose, and it does not work either in the default reference
+ implementation (for timestamps after 2037) or in common
+ implementations such as GNU/Linux (for contemporary timestamps).
+ Since POSIXRULES was designed primarily as a temporary transition
+ facility for System V platforms that died off decades ago, it is
+ being decommissioned rather than institutionalized.
+
+ New info on Bonin Islands and Marcus (thanks to Wakaba and Phake Nick).
+
+
+Release 2019a - 2019-03-25 22:01:33 -0700
Briefly:
Palestine "springs forward" on 2019-03-30 instead of 2019-03-23.
@@ -481,7 +575,7 @@ Release 2018d - 2018-03-22 07:05:46 -0700
The code is a bit more portable to MS-Windows. Installers can
compile with -DRESERVE_STD_EXT_IDS on MS-Windows platforms that
reserve identifiers like 'localtime'. (Thanks to Manuela
- Friedrich).
+ Friedrich.)
Changes to documentation and commentary
@@ -2276,7 +2370,7 @@ Release 2014f - 2014-08-05 17:42:36 -0700
warlord Jin Shuren in the data.
Commentary about the coverage of each Russian zone has been standardized.
- (Thanks to Tim Parenti).
+ (Thanks to Tim Parenti.)
There is new commentary about contemporary timekeeping in Ethiopia.
@@ -2724,7 +2818,7 @@ Release 2013e - 2013-09-19 23:50:04 -0700
Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46.
This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks
- to Alois Treindl).
+ to Alois Treindl.)
Change the date of the circa-1850 Zurich transition from 1849-09-12
to 1853-07-16, overriding Shanks with data from Messerli about
@@ -3034,7 +3128,7 @@ Release 2013a - 2013-02-27 09:20:35 -0800
(Thanks to Arthur David Olson.)
Improve the commentary about which districts observe what times
- in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson).
+ in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson.)
Add web page links to tz.js.
diff --git a/africa b/africa
index a58c11c181cc..feb6017d959b 100644
--- a/africa
+++ b/africa
@@ -89,7 +89,7 @@ Rule Algeria 1980 only - Apr 25 0:00 1:00 S
Rule Algeria 1980 only - Oct 31 2:00 0 -
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
0:00 Algeria WE%sT 1940 Feb 25 2:00
@@ -124,7 +124,7 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
# For now, ignore that and follow the 1911-05-26 Portuguese decree
# (see Europe/Lisbon).
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia
-2:00 - -02 1942 Sep
-2:00 1:00 -01 1945 Oct 15
@@ -135,7 +135,7 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia
# See Africa/Lagos.
# Chad
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
1:00 - WAT 1979 Oct 14
1:00 1:00 WAST 1980 Mar 8
@@ -151,7 +151,7 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
# See Africa/Lagos.
# Côte d'Ivoire / Ivory Coast
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Abidjan -0:16:08 - LMT 1912
0:00 - GMT
Link Africa/Abidjan Africa/Bamako # Mali
@@ -356,7 +356,7 @@ Rule Egypt 2014 only - Jun 26 24:00 0 -
Rule Egypt 2014 only - Jul 31 24:00 1:00 S
Rule Egypt 2014 only - Sep lastThu 24:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
2:00 Egypt EE%sT
@@ -414,7 +414,7 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Ghana 1920 1942 - Sep 1 0:00 0:20 -
Rule Ghana 1920 1942 - Dec 31 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Accra -0:00:52 - LMT 1918
0:00 Ghana GMT/+0020
@@ -428,13 +428,13 @@ Zone Africa/Accra -0:00:52 - LMT 1918
# evidently confusing the date of the Portuguese decree
# (see Europe/Lisbon) with the date that it took effect.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u
-1:00 - -01 1975
0:00 - GMT
# Kenya
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
3:00 - EAT 1930
2:30 - +0230 1940
@@ -469,7 +469,7 @@ Link Africa/Nairobi Indian/Mayotte
# Use the abbreviation "MMT" before 1972, as the more-accurate numeric
# abbreviation "-004430" would be one byte over the POSIX limit.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Monrovia -0:43:08 - LMT 1882
-0:43:08 - MMT 1919 Mar # Monrovia Mean Time
-0:44:30 - MMT 1972 Jan 7 # approximately MMT
@@ -519,7 +519,7 @@ Rule Libya 1997 only - Apr 4 0:00 1:00 S
Rule Libya 1997 only - Oct 4 0:00 0 -
Rule Libya 2013 only - Mar lastFri 1:00 1:00 S
Rule Libya 2013 only - Oct lastFri 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Tripoli 0:52:44 - LMT 1920
1:00 Libya CE%sT 1959
2:00 - EET 1982
@@ -629,7 +629,7 @@ Rule Mauritius 1982 only - Oct 10 0:00 1:00 -
Rule Mauritius 1983 only - Mar 21 0:00 0 -
Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 -
Rule Mauritius 2009 only - Mar lastSun 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
4:00 Mauritius +04/+05
# Agalega Is, Rodriguez
@@ -860,18 +860,24 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
# the week end after.... The government does not announce yet the decision
# about this temporary change. But it s 99% sure that it will be the case,
# as in previous years. An unofficial survey was done these days, showing
-# that 64% of asked peopke are ok for moving from +1 to +0 during Ramadan.
+# that 64% of asked people are ok for moving from +1 to +0 during Ramadan.
# https://leconomiste.com/article/1035870-enquete-l-economiste-sunergia-64-des-marocains-plebiscitent-le-gmt-pendant-ramadan
+
+# From Naoufal Semlali (2019-04-16):
+# Morocco will be on GMT starting from Sunday, May 5th 2019 at 3am.
+# The switch to GMT+1 will occur on Sunday, June 9th 2019 at 2am....
+# http://fr.le360.ma/societe/voici-la-date-du-retour-a-lheure-legale-au-maroc-188222
#
-# From Paul Eggert (2018-11-01):
-# For now, guess that Morocco will fall back at 03:00 the last Sunday
-# before Ramadan, and spring forward at 02:00 the first Sunday after
+# From Paul Eggert (2019-05-20):
+# This agrees with our 2018-11-01 guess that the Moroccan government
+# would continue the practice of falling back at 03:00 the last Sunday
+# before Ramadan, and of springing forward at 02:00 the first Sunday after
# Ramadan, as this has been the practice since 2012. To implement this,
-# transition dates for 2019 through 2037 were determined by running the
-# following program under GNU Emacs 26.1.
+# transition dates for 2019 through 2087 were determined by running the
+# following program under GNU Emacs 26.2.
# (let ((islamic-year 1440))
# (require 'cal-islam)
-# (while (< islamic-year 1460)
+# (while (< islamic-year 1511)
# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year)))
# (b (calendar-islamic-to-absolute (list 10 1 islamic-year)))
# (sunday 0))
@@ -970,8 +976,114 @@ Rule Morocco 2036 only - Oct 19 3:00 -1:00 -
Rule Morocco 2036 only - Nov 23 2:00 0 -
Rule Morocco 2037 only - Oct 4 3:00 -1:00 -
Rule Morocco 2037 only - Nov 15 2:00 0 -
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Rule Morocco 2038 only - Sep 26 3:00 -1:00 -
+Rule Morocco 2038 only - Oct 31 2:00 0 -
+Rule Morocco 2039 only - Sep 18 3:00 -1:00 -
+Rule Morocco 2039 only - Oct 23 2:00 0 -
+Rule Morocco 2040 only - Sep 2 3:00 -1:00 -
+Rule Morocco 2040 only - Oct 14 2:00 0 -
+Rule Morocco 2041 only - Aug 25 3:00 -1:00 -
+Rule Morocco 2041 only - Sep 29 2:00 0 -
+Rule Morocco 2042 only - Aug 10 3:00 -1:00 -
+Rule Morocco 2042 only - Sep 21 2:00 0 -
+Rule Morocco 2043 only - Aug 2 3:00 -1:00 -
+Rule Morocco 2043 only - Sep 6 2:00 0 -
+Rule Morocco 2044 only - Jul 24 3:00 -1:00 -
+Rule Morocco 2044 only - Aug 28 2:00 0 -
+Rule Morocco 2045 only - Jul 9 3:00 -1:00 -
+Rule Morocco 2045 only - Aug 20 2:00 0 -
+Rule Morocco 2046 only - Jul 1 3:00 -1:00 -
+Rule Morocco 2046 only - Aug 5 2:00 0 -
+Rule Morocco 2047 only - Jun 23 3:00 -1:00 -
+Rule Morocco 2047 only - Jul 28 2:00 0 -
+Rule Morocco 2048 only - Jun 7 3:00 -1:00 -
+Rule Morocco 2048 only - Jul 19 2:00 0 -
+Rule Morocco 2049 only - May 30 3:00 -1:00 -
+Rule Morocco 2049 only - Jul 4 2:00 0 -
+Rule Morocco 2050 only - May 15 3:00 -1:00 -
+Rule Morocco 2050 only - Jun 26 2:00 0 -
+Rule Morocco 2051 only - May 7 3:00 -1:00 -
+Rule Morocco 2051 only - Jun 11 2:00 0 -
+Rule Morocco 2052 only - Apr 28 3:00 -1:00 -
+Rule Morocco 2052 only - Jun 2 2:00 0 -
+Rule Morocco 2053 only - Apr 13 3:00 -1:00 -
+Rule Morocco 2053 only - May 25 2:00 0 -
+Rule Morocco 2054 only - Apr 5 3:00 -1:00 -
+Rule Morocco 2054 only - May 10 2:00 0 -
+Rule Morocco 2055 only - Mar 28 3:00 -1:00 -
+Rule Morocco 2055 only - May 2 2:00 0 -
+Rule Morocco 2056 only - Mar 12 3:00 -1:00 -
+Rule Morocco 2056 only - Apr 23 2:00 0 -
+Rule Morocco 2057 only - Mar 4 3:00 -1:00 -
+Rule Morocco 2057 only - Apr 8 2:00 0 -
+Rule Morocco 2058 only - Feb 17 3:00 -1:00 -
+Rule Morocco 2058 only - Mar 31 2:00 0 -
+Rule Morocco 2059 only - Feb 9 3:00 -1:00 -
+Rule Morocco 2059 only - Mar 16 2:00 0 -
+Rule Morocco 2060 only - Feb 1 3:00 -1:00 -
+Rule Morocco 2060 only - Mar 7 2:00 0 -
+Rule Morocco 2061 only - Jan 16 3:00 -1:00 -
+Rule Morocco 2061 only - Feb 27 2:00 0 -
+Rule Morocco 2062 only - Jan 8 3:00 -1:00 -
+Rule Morocco 2062 only - Feb 12 2:00 0 -
+Rule Morocco 2062 only - Dec 31 3:00 -1:00 -
+Rule Morocco 2063 only - Feb 4 2:00 0 -
+Rule Morocco 2063 only - Dec 16 3:00 -1:00 -
+Rule Morocco 2064 only - Jan 20 2:00 0 -
+Rule Morocco 2064 only - Dec 7 3:00 -1:00 -
+Rule Morocco 2065 only - Jan 11 2:00 0 -
+Rule Morocco 2065 only - Nov 22 3:00 -1:00 -
+Rule Morocco 2066 only - Jan 3 2:00 0 -
+Rule Morocco 2066 only - Nov 14 3:00 -1:00 -
+Rule Morocco 2066 only - Dec 19 2:00 0 -
+Rule Morocco 2067 only - Nov 6 3:00 -1:00 -
+Rule Morocco 2067 only - Dec 11 2:00 0 -
+Rule Morocco 2068 only - Oct 21 3:00 -1:00 -
+Rule Morocco 2068 only - Dec 2 2:00 0 -
+Rule Morocco 2069 only - Oct 13 3:00 -1:00 -
+Rule Morocco 2069 only - Nov 17 2:00 0 -
+Rule Morocco 2070 only - Oct 5 3:00 -1:00 -
+Rule Morocco 2070 only - Nov 9 2:00 0 -
+Rule Morocco 2071 only - Sep 20 3:00 -1:00 -
+Rule Morocco 2071 only - Oct 25 2:00 0 -
+Rule Morocco 2072 only - Sep 11 3:00 -1:00 -
+Rule Morocco 2072 only - Oct 16 2:00 0 -
+Rule Morocco 2073 only - Aug 27 3:00 -1:00 -
+Rule Morocco 2073 only - Oct 8 2:00 0 -
+Rule Morocco 2074 only - Aug 19 3:00 -1:00 -
+Rule Morocco 2074 only - Sep 23 2:00 0 -
+Rule Morocco 2075 only - Aug 11 3:00 -1:00 -
+Rule Morocco 2075 only - Sep 15 2:00 0 -
+Rule Morocco 2076 only - Jul 26 3:00 -1:00 -
+Rule Morocco 2076 only - Sep 6 2:00 0 -
+Rule Morocco 2077 only - Jul 18 3:00 -1:00 -
+Rule Morocco 2077 only - Aug 22 2:00 0 -
+Rule Morocco 2078 only - Jul 10 3:00 -1:00 -
+Rule Morocco 2078 only - Aug 14 2:00 0 -
+Rule Morocco 2079 only - Jun 25 3:00 -1:00 -
+Rule Morocco 2079 only - Jul 30 2:00 0 -
+Rule Morocco 2080 only - Jun 16 3:00 -1:00 -
+Rule Morocco 2080 only - Jul 21 2:00 0 -
+Rule Morocco 2081 only - Jun 1 3:00 -1:00 -
+Rule Morocco 2081 only - Jul 13 2:00 0 -
+Rule Morocco 2082 only - May 24 3:00 -1:00 -
+Rule Morocco 2082 only - Jun 28 2:00 0 -
+Rule Morocco 2083 only - May 16 3:00 -1:00 -
+Rule Morocco 2083 only - Jun 20 2:00 0 -
+Rule Morocco 2084 only - Apr 30 3:00 -1:00 -
+Rule Morocco 2084 only - Jun 11 2:00 0 -
+Rule Morocco 2085 only - Apr 22 3:00 -1:00 -
+Rule Morocco 2085 only - May 27 2:00 0 -
+Rule Morocco 2086 only - Apr 14 3:00 -1:00 -
+Rule Morocco 2086 only - May 19 2:00 0 -
+Rule Morocco 2087 only - Mar 30 3:00 -1:00 -
+Rule Morocco 2087 only - May 4 2:00 0 -
+# For dates after the somewhat-arbitrary cutoff of 2087, assume that
+# Morocco will no longer observe DST. At some point this table will
+# need to be extended, though quite possibly Morocco will change the
+# rules first.
+
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26
0:00 Morocco +00/+01 1984 Mar 16
1:00 - +01 1986
@@ -1001,7 +1113,7 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# merely made it official?
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
2:00 - CAT
Link Africa/Maputo Africa/Blantyre # Malawi
@@ -1073,7 +1185,7 @@ Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT
#Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT
# End of rearguard section.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
1:30 - +0130 1903 Mar
2:00 - SAST 1942 Sep 20 2:00
@@ -1094,7 +1206,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
# See Africa/Lagos.
# Nigeria
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Lagos 0:13:36 - LMT 1919 Sep
1:00 - WAT
Link Africa/Lagos Africa/Bangui # Central African Republic
@@ -1108,7 +1220,7 @@ Link Africa/Lagos Africa/Niamey # Niger
Link Africa/Lagos Africa/Porto-Novo # Benin
# Réunion
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
4:00 - +04
#
@@ -1168,7 +1280,7 @@ Zone Africa/Sao_Tome 0:26:56 - LMT 1884
# See Africa/Abidjan.
# Seychelles
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
4:00 - +04
# From Paul Eggert (2001-05-30):
@@ -1188,7 +1300,7 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule SA 1942 1943 - Sep Sun>=15 2:00 1:00 -
Rule SA 1943 1944 - Mar Sun>=15 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8
1:30 - SAST 1903 Mar
2:00 SA SAST
@@ -1223,14 +1335,14 @@ Rule Sudan 1970 only - May 1 0:00 1:00 S
Rule Sudan 1970 1985 - Oct 15 0:00 0 -
Rule Sudan 1971 only - Apr 30 0:00 1:00 S
Rule Sudan 1972 1985 - Apr lastSun 0:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Khartoum 2:10:08 - LMT 1931
2:00 Sudan CA%sT 2000 Jan 15 12:00
3:00 - EAT 2017 Nov 1
2:00 - CAT
# South Sudan
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Juba 2:06:28 - LMT 1931
2:00 Sudan CA%sT 2000 Jan 15 12:00
3:00 - EAT
@@ -1336,7 +1448,7 @@ Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 -
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
# Shanks & Pottenger say the 1911 switch was on Mar 9; go with Howse's Mar 11.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
1:00 Tunisia CE%sT
diff --git a/antarctica b/antarctica
index 1dd9b004f73a..205998381dce 100644
--- a/antarctica
+++ b/antarctica
@@ -13,7 +13,7 @@
# for information.
# Unless otherwise specified, we have no time zone information.
-# FORMAT is '-00' and GMTOFF is 0 for locations while uninhabited.
+# FORMAT is '-00' and STDOFF is 0 for locations while uninhabited.
# Argentina - year-round bases
# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
@@ -70,7 +70,7 @@
# Australian Antarctica Division informed us that Casey changed time
# zone to UTC+11 in "the morning of 22nd October 2016".
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/Casey 0 - -00 1969
8:00 - +08 2009 Oct 18 2:00
11:00 - +11 2010 Mar 5 2:00
@@ -142,7 +142,7 @@ Zone Antarctica/Mawson 0 - -00 1954 Feb 13
# St Paul Island - near Amsterdam, uninhabited
# fishing stations operated variously 1819/1931
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français
5:00 - +05
#
@@ -153,7 +153,7 @@ Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français
# Another base at Port-Martin, 50km east, began operation in 1947.
# It was destroyed by fire on 1952-01-14.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/DumontDUrville 0 - -00 1947
10:00 - +10 1952 Jan 14
0 - -00 1956 Nov
@@ -181,7 +181,7 @@ Zone Antarctica/DumontDUrville 0 - -00 1947
# 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 GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/Syowa 0 - -00 1957 Jan 29
3:00 - +03
# See:
@@ -231,7 +231,7 @@ Rule Troll 2005 max - Mar lastSun 1:00u 2:00 +02
#Rule Troll 2004 max - Nov 7 1:00u 0:00 +00
# Remove the following line when uncommenting the above '#Rule' lines.
Rule Troll 2004 max - Oct lastSun 1:00u 0:00 +00
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/Troll 0 - -00 2005 Feb 12
0:00 Troll %s
@@ -305,7 +305,7 @@ Zone Antarctica/Vostok 0 - -00 1957 Dec 16
# From Paul Eggert (2002-10-22)
# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/Rothera 0 - -00 1976 Dec 1
-3:00 - -03
diff --git a/asia b/asia
index d790da5bf626..348e2b5df5ec 100644
--- a/asia
+++ b/asia
@@ -84,7 +84,7 @@ Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 -
Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 -
# Afghanistan
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Kabul 4:36:48 - LMT 1890
4:00 - +04 1945
4:30 - +0430
@@ -117,7 +117,7 @@ Zone Asia/Kabul 4:36:48 - LMT 1890
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 -
Rule Armenia 2011 only - Oct lastSun 2:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
3:00 - +03 1957 Mar
4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
@@ -143,7 +143,7 @@ Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 -
Rule Azer 1997 2015 - Oct lastSun 5:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Baku 3:19:24 - LMT 1924 May 2
3:00 - +03 1957 Mar
4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
@@ -231,7 +231,7 @@ Zone Asia/Baku 3:19:24 - LMT 1924 May 2
Rule Dhaka 2009 only - Jun 19 23:00 1:00 -
Rule Dhaka 2009 only - Dec 31 24:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Dhaka 6:01:40 - LMT 1890
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
6:30 - +0630 1942 May 15
@@ -241,7 +241,7 @@ Zone Asia/Dhaka 6:01:40 - LMT 1890
6:00 Dhaka +06/+07
# Bhutan
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
5:30 - +0530 1987 Oct
6:00 - +06
@@ -252,13 +252,13 @@ Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
# We have no information as to when standard time was introduced;
# assume it occurred in 1907, the same year as Mauritius (which
# then contained the Chagos Archipelago).
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Chagos 4:49:40 - LMT 1907
5:00 - +05 1996
6:00 - +06
# Brunei
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
7:30 - +0730 1933
8:00 - +08
@@ -273,7 +273,7 @@ Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
# of Greenwich." This refers to the period before Burma's transition to +0630,
# a transition for which Shanks is the only source.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon
6:24:47 - RMT 1920 # Rangoon local time
6:30 - +0630 1942 May
@@ -561,7 +561,7 @@ Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D
# that the sort of users who prefer Asia/Urumqi now typically ignored the
# +08 mandate back then.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Beijing time, used throughout China; represented by Shanghai.
Zone Asia/Shanghai 8:05:43 - LMT 1901
8:00 Shang C%sT 1949 May 28
@@ -652,11 +652,41 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928
# https://i.imgur.com/05KkvtC.png
# * 1941-09-30, Hong Kong Daily Press, Winter Time Warning.
# https://i.imgur.com/dge4kFJ.png
-# Also, the Liberation day of Hong Kong after WWII which British rule
-# over the territory resumed was August 30, 1945, which I think should
-# be the termination date for the use of JST in the territory....
-# From Paul Eggert (2018-11-17):
+# From P Chan (2018-12-31):
+# * According to the Hong Kong Daylight-Saving Regulations, 1941, the
+# 1941 spring-forward transition was at 03:00.
+# http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf
+# http://sunzi.lib.hku.hk/hkgro/view/g1941/305516.pdf
+# * According to some articles from South China Morning Post, +08 was
+# resumed on 1945-11-18 at 02:00.
+# https://i.imgur.com/M2IsZ3c.png
+# https://i.imgur.com/iOPqrVo.png
+# https://i.imgur.com/fffcGDs.png
+# * Some newspapers ... said the 1946 spring-forward transition was on
+# 04-21 at 00:00. The Kung Sheung Evening News 1946-04-20 (Chinese)
+# https://i.imgur.com/ZSzent0.png
+# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2FH7zGe%2FKF%2BFLYsuqGhRBfe p.4
+# The Kung Sheung Daily News 1946-04-21 (Chinese)
+# https://i.imgur.com/7ecmRlcm.png
+# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2BQBGt1%2BwUj5qG2GqtwR3Wh p.4
+# * According to the Summer Time Ordinance (1946), the fallback
+# transitions between 1946 and 1952 were at 03:30 Standard Time (+08)
+# http://oelawhk.lib.hku.hk/archive/files/bb74b06a74d5294620a15de560ab33c6.pdf
+# * Some other laws and regulations related to DST from 1953 to 1979
+# Summer Time Ordinance 1953
+# https://i.imgur.com/IOlJMav.jpg
+# Summer Time (Amendment) Ordinance 1965
+# https://i.imgur.com/8rofeLa.jpg
+# Interpretation and General Clauses Ordinance (1966)
+# https://i.imgur.com/joy3msj.jpg
+# Emergency (Summer Time) Regulation 1973 <https://i.imgur.com/OpRWrKz.jpg>
+# Interpretation and General Clauses (Amendment) Ordinance 1977
+# https://i.imgur.com/RaNqnc4.jpg
+# Resolution of the Legislative Council passed on 9 May 1979
+# https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39
+
+# From Paul Eggert (2019-05-31):
# Here are the dates given at
# https://www.hko.gov.hk/gts/time/Summertime.htm
# as of 2014-06-19:
@@ -667,7 +697,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928
# 1944 Whole year
# 1945 Whole year
# 1946 20 Apr to 1 Dec
-# 1947 13 Apr to 30 Dec
+# 1947 13 Apr to 30 Nov
# 1948 2 May to 31 Oct
# 1949 3 Apr to 30 Oct
# 1950 2 Apr to 29 Oct
@@ -704,36 +734,28 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928
# The page does not give times of day for transitions,
# or dates for the 1942 and 1945 transitions.
# The Japanese occupation of Hong Kong began 1941-12-25.
-# The Japanese surrender of Hong Kong was signed 1945-09-16; see:
-# Heaver S. The days after the Pacific war ended: unsettling times
-# in Hong Kong. Post Magazine. 2016-06-13.
-# https://www.scmp.com/magazines/post-magazine/article/1852990/days-after-pacific-war-ended-unsettling-times-hong-kong
-# For lack of anything better, use start of those days as the
-# transition times.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule HK 1946 only - Apr 20 3:30 1:00 S
-Rule HK 1946 only - Dec 1 3:30 0 -
-Rule HK 1947 only - Apr 13 3:30 1:00 S
-Rule HK 1947 only - Dec 30 3:30 0 -
-Rule HK 1948 only - May 2 3:30 1:00 S
-Rule HK 1948 1951 - Oct lastSun 3:30 0 -
-Rule HK 1952 1953 - Nov Sun>=1 3:30 0 -
+Rule HK 1946 only - Apr 21 0:00 1:00 S
+Rule HK 1946 only - Dec 1 3:30s 0 -
+Rule HK 1947 only - Apr 13 3:30s 1:00 S
+Rule HK 1947 only - Nov 30 3:30s 0 -
+Rule HK 1948 only - May 2 3:30s 1:00 S
+Rule HK 1948 1952 - Oct Sun>=28 3:30s 0 -
Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
+Rule HK 1953 1964 - Oct Sun>=31 3:30 0 -
Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
-Rule HK 1954 only - Oct 31 3:30 0 -
-Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S
Rule HK 1965 1976 - Oct Sun>=16 3:30 0 -
Rule HK 1973 only - Dec 30 3:30 1:00 S
-Rule HK 1979 only - May Sun>=8 3:30 1:00 S
-Rule HK 1979 only - Oct Sun>=16 3:30 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Rule HK 1979 only - May 13 3:30 1:00 S
+Rule HK 1979 only - Oct 21 3:30 0 -
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42
- 8:00 - HKT 1941 Jun 15 3:30
+ 8:00 - HKT 1941 Jun 15 3:00
8:00 1:00 HKST 1941 Oct 1 4:00
8:30 - HKT 1941 Dec 25
- 9:00 - JST 1945 Sep 16
+ 9:00 - JST 1945 Nov 18 2:00
8:00 HK HK%sT
###############################################################################
@@ -857,7 +879,7 @@ Rule Taiwan 1974 1975 - Oct 1 0:00 0 S
Rule Taiwan 1979 only - Jul 1 0:00 1:00 D
Rule Taiwan 1979 only - Oct 1 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Taipei or Taibei or T'ai-pei
Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1
8:00 - CST 1937 Oct 1
@@ -995,7 +1017,7 @@ Rule Macau 1975 1976 - Apr Sun>=16 03:30 1:00 D
Rule Macau 1979 only - May 13 03:30 1:00 D
Rule Macau 1979 only - Oct Sun>=16 03:30 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Macau 7:34:10 - LMT 1904 Oct 30
8:00 - CST 1941 Dec 21 23:00
9:00 Macau +09/+10 1945 Sep 30 24:00
@@ -1034,7 +1056,7 @@ Rule Cyprus 1977 only - Sep 25 0:00 0 -
Rule Cyprus 1978 only - Oct 2 0:00 0 -
Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 -
Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
2:00 Cyprus EE%sT 1998 Sep
2:00 EUAsia EE%sT
@@ -1083,7 +1105,7 @@ Link Asia/Nicosia Europe/Nicosia
# Byalokoz 1919 says Georgia was 2:59:11.
# Go with Byalokoz.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Tbilisi 2:59:11 - LMT 1880
2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time
3:00 - +03 1957 Mar
@@ -1120,7 +1142,7 @@ Zone Asia/Tbilisi 2:59:11 - LMT 1880
# which will be permanent, with no seasonal adjustment, will happen at
# midnight on Saturday, September 16.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
8:00 - +08 1942 Feb 21 23:00
9:00 - +09 1976 May 3
@@ -1186,7 +1208,7 @@ Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
# time for 1870-1941. Shanks is our only (and dubious) source for the
# 1941-1945 data.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata
5:53:20 - HMT 1870 # Howrah Mean Time?
5:21:10 - MMT 1906 Jan 1 # Madras local time
@@ -1238,7 +1260,7 @@ Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata
# WITA - +08 - Waktu Indonesia Tengah (Indonesia central time)
# WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time)
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Java, Sumatra
Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
# Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
@@ -1314,9 +1336,9 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
# I used the following code in GNU Emacs 26.1 to generate the "Rule Iran"
# lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's
# cal-persia implementation of Birashk's approximation, which in the
-# 2008-2087 range disagrees with the the astronomical Persian calendar
-# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058),
-# so the following code special-case those years. See Table 15.1, page 264, of:
+# 2008-2087 range disagrees with the astronomical Persian calendar
+# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), so
+# the following code special-cases those years. See Table 15.1, page 264, of:
# Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations:
# The Ultimate Edition, Cambridge University Press (2018).
# https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition
@@ -1510,7 +1532,7 @@ Rule Iran 2087 only - Sep 21 24:00 0 -
Rule Iran 2088 max - Mar 20 24:00 1:00 -
Rule Iran 2088 max - Sep 20 24:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Tehran 3:25:44 - LMT 1916
3:25:44 - TMT 1946 # Tehran Mean Time
3:30 - +0330 1977 Nov
@@ -1555,7 +1577,7 @@ Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 -
#
Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 -
Rule Iraq 1991 2007 - Oct 1 3:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Baghdad 2:57:40 - LMT 1890
2:57:36 - BMT 1918 # Baghdad Mean Time?
3:00 - +03 1982 May
@@ -1622,7 +1644,7 @@ Rule Zion 1975 only - Apr 20 0:00 1:00 D
Rule Zion 1975 only - Aug 31 0:00 0 S
# From Alois Treindl (2019-03-06):
-# http://www.moin.gov.il/Documents/שעון קיץ/clock-50-years-7-2014.pdf
+# http://www.moin.gov.il/Documents/שעון%20קיץ/clock-50-years-7-2014.pdf
# From Isaac Starkman (2019-03-06):
# Summer time was in that period in 1980 and 1984, see
# https://www.ynet.co.il/articles/0,7340,L-3951073,00.html
@@ -1760,32 +1782,15 @@ Rule Zion 2004 only - Sep 22 1:00 0 S
#
# ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps
-# From Paul Eggert (2012-10-26):
-# I used Ephraim Silverberg's dst-israel.el program
-# <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20)
-# along with Ed Reingold's cal-hebrew in GNU Emacs 21.4,
-# to generate the transitions from 2005 through 2012.
-# (I replaced "lastFri" with "Fri>=26" by hand.)
-# The spring transitions all correspond to the following Rule:
-#
-# Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D
-#
-# but older zic implementations (e.g., Solaris 8) do not support
-# "Fri>=26" to mean April 1 in years like 2005, so for now we list the
-# springtime transitions explicitly.
-
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Zion 2005 only - Apr 1 2:00 1:00 D
+Rule Zion 2005 2012 - Apr Fri<=1 2:00 1:00 D
Rule Zion 2005 only - Oct 9 2:00 0 S
-Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D
Rule Zion 2006 only - Oct 1 2:00 0 S
Rule Zion 2007 only - Sep 16 2:00 0 S
Rule Zion 2008 only - Oct 5 2:00 0 S
Rule Zion 2009 only - Sep 27 2:00 0 S
Rule Zion 2010 only - Sep 12 2:00 0 S
-Rule Zion 2011 only - Apr 1 2:00 1:00 D
Rule Zion 2011 only - Oct 2 2:00 0 S
-Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D
Rule Zion 2012 only - Sep 23 2:00 0 S
# From Ephraim Silverberg (2013-06-27):
@@ -1801,7 +1806,7 @@ Rule Zion 2012 only - Sep 23 2:00 0 S
Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D
Rule Zion 2013 max - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Jerusalem 2:20:54 - LMT 1880
2:20:40 - JMT 1918 # Jerusalem Mean Time?
2:00 Zion I%sT
@@ -1893,7 +1898,7 @@ Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D
# Central Time (UT+9). The adoption began on Oct 1, 1937.
# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 Japan J%sT
# Since 1938, all Japanese possessions have been like Asia/Tokyo,
@@ -1996,7 +2001,7 @@ Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 -
Rule Jordan 2013 only - Dec 20 0:00 0 -
Rule Jordan 2014 max - Mar lastThu 24:00 1:00 S
Rule Jordan 2014 max - Oct lastFri 0:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Amman 2:23:44 - LMT 1931
2:00 Jordan EE%sT
@@ -2037,8 +2042,8 @@ Zone Asia/Amman 2:23:44 - LMT 1931
# text.
#
# According to Izvestia newspaper No. 68 (23334) from 1991-03-20
-# (page 6; available at http://libinfo.org/newsr/newsr2574.djvu via
-# http://libinfo.org/index.php?id=58564) on 1991-03-31 at 2:00 during
+# -- page 6; available at http://libinfo.org/newsr/newsr2574.djvu via
+# http://libinfo.org/index.php?id=58564 -- on 1991-03-31 at 2:00 during
# transition to "summer" time:
# Republic of Georgia, Latvian SSR, Lithuanian SSR, SSR Moldova,
# Estonian SSR; Komi ASSR; Kaliningrad oblast; Nenets autonomous okrug
@@ -2054,7 +2059,7 @@ Zone Asia/Amman 2:23:44 - LMT 1931
# Apparently there were last minute changes. Apparently Kazakh act No. 170
# was one of such changes.
#
-# https://ru.wikipedia.org/wiki/Декретное время
+# https://ru.wikipedia.org/wiki/Декретное_время
# claims that Sovetskaya Rossiya newspaper on 1991-03-29 published that
# Nenets autonomous okrug, Komi and Kazakhstan (excluding Uralsk oblast)
# were to not move clocks and Uralsk oblast was to move clocks
@@ -2193,7 +2198,7 @@ Zone Asia/Amman 2:23:44 - LMT 1931
# UTC+6 to UTC+5 effective December 21st, 2018. The legal document is
# located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language).
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
#
# Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
# This includes KZ-AKM, KZ-ALA, KZ-ALM, KZ-AST, KZ-BAY, KZ-VOS, KZ-ZHA,
@@ -2295,7 +2300,7 @@ Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 -
Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 -
Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
5:00 - +05 1930 Jun 21
6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s
@@ -2410,7 +2415,7 @@ Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
# The BBC reported that the transition was from 23:30 to 24:00 today.
# https://www.bbc.com/news/world-asia-44010705
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
8:30 - KST 1912 Jan 1
9:00 - JST 1945 Sep 8
@@ -2459,7 +2464,7 @@ Rule Lebanon 1992 only - Oct 4 0:00 0 -
Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Beirut 2:22:00 - LMT 1880
2:00 Lebanon EE%sT
@@ -2471,7 +2476,7 @@ Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
# peninsular Malaysia
# taken from Mok Ly Yng (2003-10-30)
# http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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.
7:00 - +07 1933 Jan 1
@@ -2485,7 +2490,7 @@ Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
# From Paul Eggert (2014-08-12):
# The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
# and 1982 transition dates are from Mok Ly Yng.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
7:30 - +0730 1933
8:00 NBorneo +08/+0820 1942 Feb 16
@@ -2493,7 +2498,7 @@ Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
8:00 - +08
# Maldives
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé
4:54:00 - MMT 1960 # Malé Mean Time
5:00 - +05
@@ -2636,7 +2641,7 @@ Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 -
Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 -
Rule Mongol 2015 2016 - Sep lastSat 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
6:00 - +06 1978
@@ -2654,7 +2659,7 @@ Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
8:00 Mongol +08/+09
# Nepal
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Kathmandu 5:41:16 - LMT 1920
5:30 - +0530 1986
5:45 - +0545
@@ -2804,7 +2809,7 @@ Rule Pakistan 2008 only - Jun 1 0:00 1:00 S
Rule Pakistan 2008 2009 - Nov 1 0:00 0 -
Rule Pakistan 2009 only - Apr 15 0:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Karachi 4:28:12 - LMT 1907
5:30 - +0530 1942 Sep
5:30 1:00 +0630 1945 Oct 15
@@ -3091,13 +3096,21 @@ Zone Asia/Karachi 4:28:12 - LMT 1907
# http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817
# From Even Scharning (2019-03-23):
-# DST in Palestine will start on 30 March this year, not 23 March as the time
-# zone database predicted.
-# https://ramallah.news/post/123610
+# http://pnn.ps/news/401130
+# http://palweather.ps/ar/node/50136.html
+#
+# From Sharif Mustafa (2019-03-26):
+# The Palestinian cabinet announced today that the switch to DST will
+# be on Fri Mar 29th 2019 by advancing the clock by 60 minutes.
+# The decree signing date is Mar 12th but it was not published till today.
+# The decree does not specify the exact time of switch.
+# http://palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e54e9ea1-50ee-4137-84df-0d6c78da259b
+#
+# From Even Scharning (2019-04-10):
+# Our source in Palestine said it happened Friday 29 at 00:00 local time....
#
-# From Tim Parenti (2019-03-23):
-# Combining this with the rules observed since 2016, adjust our spring
-# transition guess to Mar Sat>=24.
+# From Paul Eggert (2019-04-10):
+# For now, guess spring-ahead transitions are March's last Friday at 00:00.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
@@ -3128,10 +3141,11 @@ Rule Palestine 2012 only - Sep 21 1:00 0 -
Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 -
Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S
-Rule Palestine 2016 max - Mar Sat>=24 1:00 1:00 S
+Rule Palestine 2016 2018 - Mar Sat>=24 1:00 1:00 S
Rule Palestine 2016 max - Oct lastSat 1:00 0 -
+Rule Palestine 2019 max - Mar lastFri 0:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
2:00 Zion EET/EEST 1948 May 15
2:00 EgyptAsia EE%sT 1967 Jun 5
@@ -3205,7 +3219,7 @@ Rule Phil 1954 only - Apr 12 0:00 1:00 D
Rule Phil 1954 only - Jul 1 0:00 0 S
Rule Phil 1978 only - Mar 22 0:00 1:00 D
Rule Phil 1978 only - Sep 21 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
8:04:00 - LMT 1899 May 11
8:00 Phil P%sT 1942 May
@@ -3213,7 +3227,7 @@ Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
8:00 Phil P%sT
# Qatar
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
4:00 - +04 1972 Jun
3:00 - +03
@@ -3261,7 +3275,7 @@ Link Asia/Qatar Asia/Bahrain
# the country. Presumably this is documenting airline time. Ignore this,
# as it's before our 1970 cutoff.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
3:00 - +03
Link Asia/Riyadh Asia/Aden # Yemen
@@ -3270,7 +3284,7 @@ Link Asia/Riyadh Asia/Kuwait
# Singapore
# taken from Mok Ly Yng (2003-10-30)
# http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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.
7:00 - +07 1933 Jan 1
@@ -3334,7 +3348,7 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
# even worse. For now, let's use a numeric abbreviation; we can
# switch to "SLST" if it catches on.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Colombo 5:19:24 - LMT 1880
5:19:32 - MMT 1906 # Moratuwa Mean Time
5:30 - +0530 1942 Jan 5
@@ -3504,13 +3518,13 @@ Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S
Rule Syria 2012 max - Mar lastFri 0:00 1:00 S
Rule Syria 2009 max - Oct lastFri 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq
2:00 Syria EE%sT
# Tajikistan
# From Shanks & Pottenger.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
5:00 - +05 1930 Jun 21
6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s
@@ -3518,7 +3532,7 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
5:00 - +05
# Thailand
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Bangkok 6:42:04 - LMT 1880
6:42:04 - BMT 1920 Apr # Bangkok Mean Time
7:00 - +07
@@ -3527,7 +3541,7 @@ Link Asia/Bangkok Asia/Vientiane # Laos
# Turkmenistan
# From Shanks & Pottenger.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
4:00 - +04 1930 Jun 21
5:00 RussiaAsia +05/+06 1991 Mar 31 2:00
@@ -3535,14 +3549,14 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
5:00 - +05
# United Arab Emirates
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
4:00 - +04
Link Asia/Dubai Asia/Muscat # Oman
# Uzbekistan
# Byalokoz 1919 says Uzbekistan was 4:27:53.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2
4:00 - +04 1930 Jun 21
5:00 - +05 1981 Apr 1
@@ -3608,7 +3622,7 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
# Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu",
# NXB Thuận Hoá, Huế, 1995.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1
7:06:30 - PLMT 1911 May 1 # Phù Liễn MT
7:00 - +07 1942 Dec 31 23:00
diff --git a/australasia b/australasia
index dfe73d3f9dc5..0544e587509a 100644
--- a/australasia
+++ b/australasia
@@ -25,7 +25,7 @@ Rule Aus 1943 only - Oct 3 2:00 1:00 D
# says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that
# 1944/1945 was just like 1943/1944.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Northern Territory
Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
9:00 - ACST 1899 May
@@ -102,7 +102,7 @@ Rule AS 2006 only - Apr 2 2:00s 0 S
Rule AS 2007 only - Mar lastSun 2:00s 0 S
Rule AS 2008 max - Apr Sun>=1 2:00s 0 S
Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb
9:00 - ACST 1899 May
9:30 Aus AC%sT 1971
@@ -134,7 +134,7 @@ Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D
Rule AT 2006 only - Apr Sun>=1 2:00s 0 S
Rule AT 2007 only - Mar lastSun 2:00s 0 S
Rule AT 2008 max - Apr Sun>=1 2:00s 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Australia/Hobart 9:49:16 - LMT 1895 Sep
10:00 - AEST 1916 Oct 1 2:00
10:00 1:00 AEDT 1917 Feb
@@ -162,7 +162,7 @@ Rule AV 2006 only - Apr Sun>=1 2:00s 0 S
Rule AV 2007 only - Mar lastSun 2:00s 0 S
Rule AV 2008 max - Apr Sun>=1 2:00s 0 S
Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb
10:00 Aus AE%sT 1971
10:00 AV AE%sT
@@ -185,7 +185,7 @@ Rule AN 2006 only - Apr Sun>=1 2:00s 0 S
Rule AN 2007 only - Mar lastSun 2:00s 0 S
Rule AN 2008 max - Apr Sun>=1 2:00s 0 S
Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
10:00 Aus AE%sT 1971
10:00 AN AE%sT
@@ -256,14 +256,14 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov
11:00 - +11
# Christmas
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
7:00 - +07
# Cocos (Keeling) Is
# These islands were ruled by the Ross family from about 1830 to 1978.
# We don't know when standard time was introduced; for now, we guess 1900.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Indian/Cocos 6:27:40 - LMT 1900
6:30 - +0630
@@ -386,12 +386,12 @@ Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 -
Rule Fiji 2014 only - Jan Sun>=18 2:00 0 -
Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 -
Rule Fiji 2015 max - Jan Sun>=13 3:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
12:00 Fiji +12/+13
# French Polynesia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
-9:00 - -09
Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
@@ -434,7 +434,7 @@ Rule Guam 1977 only - Apr 24 2:00 1:00 D
# http://documents.guam.gov/wp-content/uploads/E.O.-77-18-Guam-Standard-Time.pdf
Rule Guam 1977 only - Aug 28 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
9:39:00 - LMT 1901 # Agana
10:00 - GST 1941 Dec 10 # Guam
@@ -444,7 +444,7 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
Link Pacific/Guam Pacific/Saipan # N Mariana Is
# Kiribati
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
@@ -460,7 +460,7 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901
# See Pacific/Guam.
# Marshall Is
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Majuro 11:24:48 - LMT 1901
11:00 - +11 1914 Oct
9:00 - +09 1919 Feb 1
@@ -478,7 +478,7 @@ Zone Pacific/Kwajalein 11:09:20 - LMT 1901
12:00 - +12
# Micronesia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31
10:07:08 - LMT 1901
10:00 - +10 1914 Oct
@@ -506,7 +506,7 @@ Zone Pacific/Kosrae -13:08:04 - LMT 1844 Dec 31
11:00 - +11
# Nauru
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
11:30 - +1130 1942 Aug 29
9:00 - +09 1945 Sep 8
@@ -520,7 +520,7 @@ Rule NC 1978 1979 - Feb 27 0:00 0 -
Rule NC 1996 only - Dec 1 2:00s 1:00 -
# Shanks & Pottenger say the following was at 2:00; go with IATA.
Rule NC 1997 only - Mar 2 2:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
11:00 NC +11/+12
@@ -559,7 +559,7 @@ Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D
Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 -
Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S
Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
11:30 NZ NZ%sT 1946 Jan 1
12:00 NZ NZ%sT
@@ -585,7 +585,7 @@ Link Pacific/Auckland Antarctica/McMurdo
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 GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
-10:30 - -1030 1978 Nov 12
-10:00 Cook -10/-0930
@@ -594,14 +594,14 @@ Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
# Niue
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
-11:00 - -11
# Norfolk
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
11:12 - +1112 1951
11:30 - +1130 1974 Oct 27 02:00
@@ -610,13 +610,13 @@ Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
11:00 - +11
# Palau (Belau)
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror
8:57:56 - LMT 1901
9:00 - +09
# Papua New Guinea
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
9:48:32 - PMMT 1895 # Port Moresby Mean Time
10:00 - +10
@@ -646,7 +646,7 @@ Zone Pacific/Bougainville 10:22:16 - LMT 1880
11:00 - +11
# Pitcairn
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
-8:30 - -0830 1998 Apr 27 0:00
-8:00 - -08
@@ -731,7 +731,7 @@ Rule WS 2011 only - Apr Sat>=1 4:00 0 -
Rule WS 2011 only - Sep lastSat 3:00 1 -
Rule WS 2012 max - Apr Sun>=1 4:00 0 -
Rule WS 2012 max - Sep lastSun 3:00 1 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5
-11:26:56 - LMT 1911
-11:30 - -1130 1950
@@ -740,7 +740,7 @@ Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5
# Solomon Is
# excludes Bougainville, for which see Papua New Guinea
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
11:00 - +11
@@ -763,7 +763,7 @@ Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
# was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger
# are off by an hour starting in 1901.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Fakaofo -11:24:56 - LMT 1901
-11:00 - -11 2011 Dec 30
13:00 - +13
@@ -776,14 +776,14 @@ Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 -
Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
Rule Tonga 2016 only - Nov Sun>=1 2:00 1:00 -
Rule Tonga 2017 only - Jan Sun>=15 3:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Tongatapu 12:19:20 - LMT 1901
12:20 - +1220 1941
13:00 - +13 1999
13:00 Tonga +13/+14
# Tuvalu
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Funafuti 11:56:52 - LMT 1901
12:00 - +12
@@ -844,7 +844,7 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901
# uninhabited since World War II; was probably like Pacific/Kiritimati
# Wake
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Wake 11:06:28 - LMT 1901
12:00 - +12
@@ -857,12 +857,12 @@ Rule Vanuatu 1984 only - Oct 23 0:00 1:00 -
Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 -
Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu +11/+12
# Wallis and Futuna
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Wallis 12:15:20 - LMT 1901
12:00 - +12
@@ -1248,6 +1248,22 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
# in WA or its introduction in SA had anything to do with the genesis
# of this time zone. My hunch is that it's been around since well
# before 1975. I remember seeing it noted on road maps decades ago.
+#
+# From Gilmore Davidson (2019-04-08):
+# https://www.abc.net.au/news/2019-04-08/this-remote-stretch-of-desert-has-its-own-custom-time-zone/10981000
+# ... include[s] a rough description of the geographical boundaries...
+# "The time zone exists for about 340 kilometres and takes in the tiny
+# roadhouse communities of Cocklebiddy, Madura, Eucla and Border Village."
+# ... and an indication that the zone has definitely been in existence
+# since before the 1970 cut-off of the database ...
+# From Paul Eggert (2019-05-17):
+# That ABC Esperance story by Christien de Garis also says:
+# Although the Central Western Time Zone is not officially recognised (your
+# phones won't automatically change), there is a sign instructing you which
+# way to wind your clocks 45 minutes and scrawled underneath one of them in
+# Texta is the word: 'Why'?
+# "Good question," Mr Pike said.
+# "I don't even know that, and it's been going for over 50 years."
# From Paul Eggert (2006-12-15):
# For lack of better info, assume the tradition dates back to the
@@ -1566,6 +1582,42 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
###############################################################################
+# Bonin (Ogasawara) Islands and Marcus Island (Minami-Tori-shima)
+
+# From Wakaba (2019-01-28) via Phake Nick:
+# National Diet Library of Japan has several reports by Japanese Government
+# officers that describe the time used in islands when they visited there.
+# According to them (and other sources such as newspapers), standard time UTC
+# + 10 (JST + 1) and DST UTC + 11 (JST + 2) was used until its return to Japan
+# at 1968-06-26 00:00 JST. The exact periods of DST are still unknown.
+# I guessed Guam, Mariana, and Bonin and Marcus districts might have
+# synchronized their DST periods, but reports imply they had their own
+# decisions, i.e. there were three or more different time zones....
+#
+# https://wiki.suikawiki.org/n/小笠原諸島の標準時
+
+# From Phake Nick (2019-02-12):
+# Because their last time change to return to Japanese time when they returned
+# to Japanese rule was right before 1970, ... per the current tz database
+# rule, the information doesn't warrant creation of a new timezone for Bonin
+# Islands itself and is thus as an anecdotal note for interest purpose only.
+# ... [The abovementioned link] described some special timekeeping phenomenon
+# regarding Marcus island, another remote island currently owned by Japanese
+# in the same administrative unit as Bonin Islands. Many reports claim that
+# the American coastal guard on the American quarter of the island use its own
+# coastal guard time, and most sources describe the time as UTC+11, being two
+# hours faster than JST used by some Japanese personnel on the island. Some
+# sites describe it as same as Wake Island/Guam time although it would be
+# incorrect to be same as Guam. And then in a few Japanese governmental
+# report from 1980s (from National Institute of Information and Communications
+# Technology) regarding the construction of VLBI facility on the Marcus
+# Island, it claimed that there are three time standards being used on the
+# island at the time which include not just JST (UTC+9) or [US]CG time
+# (UTC+11) but also a JMSDF time (UTC+10) (Japan Maritime Self-Defense
+# Force). Unfortunately there are no other sources that mentioned such time
+# and there are also no information on things like how the time was used.
+
+
# Fiji
# Howse writes (p 153) that in 1879 the British governor of Fiji
diff --git a/backzone b/backzone
index 380c49200cd7..2a54e6cee352 100644
--- a/backzone
+++ b/backzone
@@ -38,7 +38,7 @@
# commentary and rules associated with the entry.
#
# As explained in the zic man page, the zone columns are:
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Ethiopia
# From Paul Eggert (2014-07-31):
diff --git a/checktab.awk b/checktab.awk
index 393ab19f0bd8..ec145b5adf95 100644
--- a/checktab.awk
+++ b/checktab.awk
@@ -63,12 +63,19 @@ BEGIN {
coordinates = $2
tz = $3
comments = $4
- if (cc < cc0) {
+
+ # Don't complain about a special case for Crimea in zone.tab.
+ # FIXME: zone.tab should be removed, since it is obsolete.
+ # Or at least put just "XX" in its country-code column.
+ if (cc < cc0 \
+ && !(zone_table == "zone.tab" \
+ && tz0 == "Europe/Simferopol")) {
printf "%s:%d: country code '%s' is out of order\n", \
zone_table, zone_NR, cc >>"/dev/stderr"
status = 1
}
cc0 = cc
+ tz0 = tz
tztab[tz] = 1
tz2comments[tz] = comments
tz2NR[tz] = zone_NR
diff --git a/europe b/europe
index b735a48d7414..5dc03976dbf5 100644
--- a/europe
+++ b/europe
@@ -122,7 +122,7 @@
# position is 51° 28' 30" N, 0° 18' 45" W. The longitude should
# be within about ±2". The Ordnance Survey grid reference is TQ172761.
#
-# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
+# [This yields STDOFF = -0:01:15 for London LMT in the 18th century.]
# From Paul Eggert (1993-11-18):
#
@@ -500,7 +500,7 @@ Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT
#
# Use Europe/London for Jersey, Guernsey, and the Isle of Man.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s
0:00 GB-Eire %s 1968 Oct 27
1:00 - BST 1971 Oct 31 2:00u
@@ -538,7 +538,7 @@ Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 -
Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 -
Rule Eire 1996 max - Oct lastSun 1:00u -1:00 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
-0:25:21 - DMT 1916 May 21 2:00s
-0:25:21 1:00 IST 1916 Oct 1 2:00s
@@ -737,7 +737,7 @@ Rule Russia 1996 2010 - Oct lastSun 2:00s 0 -
# These are for backward compatibility with older versions.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone WET 0:00 EU WE%sT
Zone CET 1:00 C-Eur CE%sT
Zone MET 1:00 C-Eur ME%sT
@@ -797,14 +797,14 @@ Rule Albania 1982 only - Oct 3 0:00 0 -
Rule Albania 1983 only - Apr 18 0:00 1:00 S
Rule Albania 1983 only - Oct 1 0:00 0 -
Rule Albania 1984 only - Apr 1 0:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Tirane 1:19:20 - LMT 1914
1:00 - CET 1940 Jun 16
1:00 Albania CE%sT 1984 Jul
1:00 EU CE%sT
# Andorra
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Andorra 0:06:04 - LMT 1901
0:00 - WET 1946 Sep 30
1:00 - CET 1985 Mar 31 2:00
@@ -830,7 +830,7 @@ Rule Austria 1947 only - Apr 6 2:00s 1:00 S
Rule Austria 1948 only - Apr 18 2:00s 1:00 S
Rule Austria 1980 only - Apr 6 0:00 1:00 S
Rule Austria 1980 only - Sep 28 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Vienna 1:05:21 - LMT 1893 Apr
1:00 C-Eur CE%sT 1920
1:00 Austria CE%sT 1940 Apr 1 2:00s
@@ -862,7 +862,7 @@ Zone Europe/Vienna 1:05:21 - LMT 1893 Apr
# Belarussian government decided against changing to winter time....
# http://eng.belta.by/all_news/society/Belarus-decides-against-adjusting-time-in-Russias-wake_i_76335.html
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Minsk 1:50:16 - LMT 1880
1:50 - MMT 1924 May 2 # Minsk Mean Time
2:00 - EET 1930 Jun 21
@@ -926,7 +926,7 @@ Rule Belgium 1945 only - Apr 2 2:00s 1:00 S
Rule Belgium 1945 only - Sep 16 2:00s 0 -
Rule Belgium 1946 only - May 19 2:00s 1:00 S
Rule Belgium 1946 only - Oct 7 2:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Brussels 0:17:30 - LMT 1880
0:17:30 - BMT 1892 May 1 12:00 # Brussels MT
0:00 - WET 1914 Nov 8
@@ -953,7 +953,7 @@ Rule Bulg 1979 only - Oct 1 1:00 0 -
Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S
Rule Bulg 1980 only - Sep 29 1:00 0 -
Rule Bulg 1981 only - Sep 27 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Sofia 1:33:16 - LMT 1880
1:56:56 - IMT 1894 Nov 30 # Istanbul MT?
2:00 - EET 1942 Nov 2 3:00
@@ -986,7 +986,7 @@ Rule Czech 1946 only - May 6 2:00s 1:00 S
Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
Rule Czech 1947 1948 - Apr Sun>=15 2:00s 1:00 S
Rule Czech 1949 only - Apr 9 2:00s 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Prague 0:57:44 - LMT 1850
0:57:44 - PMT 1891 Oct # Prague Mean Time
1:00 C-Eur CE%sT 1945 May 9
@@ -1048,7 +1048,7 @@ Rule Denmark 1947 only - Aug 10 2:00s 0 -
Rule Denmark 1948 only - May 9 2:00s 1:00 S
Rule Denmark 1948 only - Aug 8 2:00s 0 -
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Copenhagen 0:50:20 - LMT 1890
0:50:20 - CMT 1894 Jan 1 # Copenhagen MT
1:00 Denmark CE%sT 1942 Nov 2 2:00s
@@ -1145,7 +1145,7 @@ Rule Thule 1993 2006 - Oct lastSun 2:00 0 S
Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D
Rule Thule 2007 max - Nov Sun>=1 2:00 0 S
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
-3:00 - -03 1980 Apr 6 2:00
-3:00 EU -03/-02 1996
@@ -1211,7 +1211,7 @@ Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base
# From Urmet Jänes (2002-03-28):
# The legislative reference is Government decree No. 84 on 2002-02-21.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Tallinn 1:39:00 - LMT 1880
1:39:00 - TMT 1918 Feb # Tallinn Mean Time
1:00 C-Eur CE%sT 1919 Jul
@@ -1274,7 +1274,7 @@ Rule Finland 1981 1982 - Sep lastSun 3:00 0 -
# Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document);
# round to nearest.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31
1:39:49 - HMT 1921 May # Helsinki Mean Time
2:00 Finland EE%sT 1983
@@ -1364,7 +1364,7 @@ Rule France 1976 only - Sep 26 1:00 0 -
# but Howse quotes the actual French legislation as saying 0:09:21.
# Go with Howse. Howse writes that the time in France was officially based
# on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT
# Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre.
@@ -1412,7 +1412,7 @@ Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer
Rule SovietZone 1945 only - Sep 24 3:00 1:00 S
Rule SovietZone 1945 only - Nov 18 2:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
1:00 C-Eur CE%sT 1945 May 24 2:00
1:00 SovietZone CE%sT 1946
@@ -1440,7 +1440,7 @@ Link Europe/Zurich Europe/Busingen
# is in Europe. Our reference location Tbilisi is in the Asian part.
# Gibraltar
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s
0:00 GB-Eire %s 1957 Apr 14 2:00
1:00 - CET 1982
@@ -1471,7 +1471,7 @@ Rule Greece 1979 only - Apr 1 9:00 1:00 S
Rule Greece 1979 only - Sep 29 2:00 0 -
Rule Greece 1980 only - Apr 1 0:00 1:00 S
Rule Greece 1980 only - Sep 28 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT
2:00 Greece EE%sT 1941 Apr 30
@@ -1508,7 +1508,7 @@ Rule Hungary 1956 only - Sep lastSun 0:00 0 -
Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S
Rule Hungary 1957 only - Sep lastSun 3:00 0 -
Rule Hungary 1980 only - Apr 6 1:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1:00 C-Eur CE%sT 1918
1:00 Hungary CE%sT 1941 Apr 8
@@ -1569,7 +1569,7 @@ Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 -
Rule Iceland 1949 only - Oct 30 1:00s 0 -
Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
Rule Iceland 1967 only - Oct 29 1:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/Reykjavik -1:28 - LMT 1908
-1:00 Iceland -01/+00 1968 Apr 7 1:00s
0:00 - GMT
@@ -1583,6 +1583,25 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908
# But these events all occurred before the 1970 cutoff,
# so record only the time in Rome.
#
+# From Stephen Trainor (2019-05-06):
+# http://www.ac-ilsestante.it/MERIDIANE/ora_legale/ORA_LEGALE_ESTIVA_IN_ITALIA.htm
+# ... the [1866] law went into effect on 12 December 1866, rather than
+# the date of the decree (22 Sep 1866)
+# https://web.archive.org/web/20070824155341/http://www.iav.it/planetario/didastro/didastro/english.htm
+# ... "In Italy in 1866 there were 6 railway times (Torino, Verona, Firenze,
+# Roma, Napoli, Palermo). On that year it was decided to unify them, adopting
+# the average time of Rome (even if this city was not yet part of the
+# kingdom). On the 12th December 1866, on the starting of the winter time
+# table, it took effect in the railways, the post office and the telegraph,
+# not only for the internal service but also for the public.... Milano set
+# the public watches on the Rome time on the same day (12th December 1866),
+# Torino and Bologna on the 1st January 1867, Venezia the 1st May 1880 and the
+# last city was Cagliari in 1886."
+#
+# From Luigi Rosa (2019-05-07):
+# this is the scan of the decree:
+# http://www.radiomarconi.com/marconi/filopanti/1866c.jpg
+#
# From Michael Deckers (2016-10-24):
# http://www.ac-ilsestante.it/MERIDIANE/ora_legale quotes a law of 1893-08-10
# ... [translated as] "The preceding dispositions will enter into
@@ -1593,6 +1612,7 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908
# The authoritative source for time in Italy is the national metrological
# institute, which has a summary page of historical DST data at
# http://www.inrim.it/res/tf/ora_legale_i.shtml
+# [now at http://oldsite.inrim.it/res/tf/ora_legale_i.shtml as of 2017]
# (2016-10-24):
# http://www.renzobaldini.it/le-ore-legali-in-italia/
# has still different data for 1944. It divides Italy in two, as
@@ -1656,8 +1676,8 @@ Rule Italy 1976 only - May 30 0:00s 1:00 S
Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
Rule Italy 1978 only - Oct 1 0:00s 0 -
Rule Italy 1979 only - Sep 30 0:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
+Zone Europe/Rome 0:49:56 - LMT 1866 Dec 12
0:49:56 - RMT 1893 Oct 31 23:49:56 # Rome Mean
1:00 Italy CE%sT 1943 Sep 10
1:00 C-Eur CE%sT 1944 Jun 4
@@ -1732,7 +1752,7 @@ Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 -
# Byalokoz 1919 says Latvia was 1:36:34.
# Go with Byalokoz.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Riga 1:36:34 - LMT 1880
1:36:34 - RMT 1918 Apr 15 2:00 # Riga MT
1:36:34 1:00 LST 1918 Sep 16 3:00 # Latvian ST
@@ -1802,7 +1822,7 @@ Link Europe/Zurich Europe/Vaduz
# http://www.lrvk.lt/nut/11/n1749.htm
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Vilnius 1:41:16 - LMT 1880
1:24:00 - WMT 1917 # Warsaw Mean Time
1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time
@@ -1846,7 +1866,7 @@ Rule Lux 1926 only - Apr 17 23:00 1:00 S
Rule Lux 1927 only - Apr 9 23:00 1:00 S
Rule Lux 1928 only - Apr 14 23:00 1:00 S
Rule Lux 1929 only - Apr 20 23:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
1:00 Lux CE%sT 1918 Nov 25
0:00 Lux WE%sT 1929 Oct 6 2:00s
@@ -1871,7 +1891,7 @@ Rule Malta 1974 only - Sep 16 0:00s 0 -
Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S
Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
Rule Malta 1980 only - Mar 31 2:00 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
1:00 Italy CE%sT 1973 Mar 31
1:00 Malta CE%sT 1981
@@ -1940,7 +1960,7 @@ Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
Rule Moldova 1997 max - Mar lastSun 2:00 1:00 S
Rule Moldova 1997 max - Oct lastSun 3:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Chisinau 1:55:20 - LMT 1880
1:55 - CMT 1918 Feb 15 # Chisinau MT
1:44:24 - BMT 1931 Jul 24 # Bucharest MT
@@ -1956,7 +1976,7 @@ Zone Europe/Chisinau 1:55:20 - LMT 1880
# Monaco
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
0:00 France WE%sT 1945 Sep 16 3:00
@@ -2031,8 +2051,8 @@ Rule Neth 1945 only - Apr 2 2:00s 1:00 S
Rule Neth 1945 only - Sep 16 2:00s 0 -
#
# Amsterdam Mean Time was +00:19:32.13, but the .13 is omitted
-# below because the current format requires GMTOFF to be an integer.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# below because the current format requires STDOFF to be an integer.
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Amsterdam 0:19:32 - LMT 1835
0:19:32 Neth %s 1937 Jul 1
0:20 Neth +0020/+0120 1940 May 16 0:00
@@ -2051,7 +2071,7 @@ Rule Norway 1945 only - Oct 1 2:00s 0 -
Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S
Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
Rule Norway 1965 only - Apr 25 2:00s 1:00 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1
1:00 Norway CE%sT 1940 Aug 10 23:00
1:00 C-Eur CE%sT 1945 Apr 2 2:00
@@ -2142,7 +2162,7 @@ Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
Rule Poland 1960 only - Apr 3 1:00s 1:00 S
Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S
Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Warsaw 1:24:00 - LMT 1880
1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time
1:00 C-Eur CE%sT 1918 Sep 16 3:00
@@ -2247,7 +2267,7 @@ Rule Port 1980 only - Mar lastSun 0:00s 1:00 S
Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S
Rule Port 1983 only - Mar lastSun 2:00s 1:00 S
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Lisbon -0:36:45 - LMT 1884
-0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT
0:00 Port WE%sT 1966 Apr 3 2:00
@@ -2306,7 +2326,7 @@ Rule Romania 1980 only - Apr 5 23:00 1:00 S
Rule Romania 1980 only - Sep lastSun 1:00 0 -
Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S
Rule Romania 1991 1993 - Sep lastSun 0:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
1:44:24 - BMT 1931 Jul 24 # Bucharest MT
2:00 Romania EE%sT 1981 Mar 29 2:00s
@@ -3345,7 +3365,7 @@ Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
# See Europe/Rome.
# Serbia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Belgrade 1:22:00 - LMT 1884
1:00 - CET 1941 Apr 18 23:00
1:00 C-Eur CE%sT 1945
@@ -3451,7 +3471,7 @@ Rule SpainAfrica 1976 only - Aug 1 0:00 0 -
Rule SpainAfrica 1977 only - Sep 28 0:00 0 -
Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16
0:00 Spain WE%sT 1940 Mar 16 23:00
1:00 Spain CE%sT 1979
@@ -3519,7 +3539,7 @@ Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
#
# Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
1:00 - CET 1916 May 14 23:00
@@ -3622,7 +3642,7 @@ Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment.
0:29:46 - BMT 1894 Jun # Bern Mean Time
1:00 Swiss CE%sT 1981
@@ -3772,7 +3792,7 @@ Rule Turkey 1986 1995 - Sep lastSun 1:00s 0 -
Rule Turkey 1994 only - Mar 20 1:00s 1:00 S
Rule Turkey 1995 2006 - Mar lastSun 1:00s 1:00 S
Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Istanbul 1:55:52 - LMT 1880
1:56:56 - IMT 1910 Oct # Istanbul Mean Time?
2:00 Turkey EE%sT 1978 Oct 15
@@ -3869,16 +3889,8 @@ Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
# controversial, and some day "Kyiv" may become substantially more popular in
# English; in the meantime, stick with the traditional English "Kiev" as that
# means less disruption for our users.
-#
-# Anyway, none of the common English-language spellings (Kiev, Kyiv, Kieff,
-# Kijeff, Kijev, Kiyef, Kiyeff) do justice to the common pronunciation in
-# Ukrainian, namely [ˈkɪjiu̯] (IPA). This pronunciation has nothing like an
-# English "v" or "f", and instead trails off with what an English-speaker
-# would call a demure "oo" sound, and it would would be better anglicized as
-# "Kuiyu". Here's a sound file, if you would like to do as the Kuiyuvians do:
-# https://commons.wikimedia.org/wiki/File:Uk-Київ.ogg
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# This represents most of Ukraine. See above for the spelling of "Kiev".
Zone Europe/Kiev 2:02:04 - LMT 1880
2:02:04 - KMT 1924 May 2 # Kiev Mean Time
diff --git a/factory b/factory
index d4e76599cd8c..9f5fc33023a3 100644
--- a/factory
+++ b/factory
@@ -8,5 +8,5 @@
# time zone abbreviation "-00", indicating that the actual time zone
# is unknown.
-# Zone NAME GMTOFF RULES FORMAT
+# Zone NAME STDOFF RULES FORMAT
Zone Factory 0 - -00
diff --git a/northamerica b/northamerica
index eee8de0fbc7a..9e3577bca697 100644
--- a/northamerica
+++ b/northamerica
@@ -93,10 +93,33 @@
# was the first nationwide legal time standard, and apparently
# time was just called "Standard Time" or "Daylight Saving Time".
-# From Arthur David Olson:
-# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
-# See, for example, the front page of the Saturday, 1974-10-26
-# and Sunday, 1974-10-27 editions of the Washington Post.
+# From Paul Eggert (2019-06-04):
+# Here is the legal basis for the US federal rules.
+# * Public Law 65-106 (1918-03-19) implemented standard and daylight saving
+# time for the first time across the US, springing forward on March's last
+# Sunday and falling back on October's last Sunday.
+# https://www.loc.gov/law/help/statutes-at-large/65th-congress/session-2/c65s2ch24.pdf
+# * Public Law 66-40 (1919-08-20) repealed DST on October 1919's last Sunday.
+# https://www.loc.gov/law/help/statutes-at-large/66th-congress/session-1/c66s1ch51.pdf
+# * Public Law 77-403 (1942-01-20) started wartime DST on 1942-02-09.
+# https://www.loc.gov/law/help/statutes-at-large/77th-congress/session-2/c77s2ch7.pdf
+# * Public Law 79-187 (1945-09-25) ended wartime DST on 1945-09-30.
+# https://www.loc.gov/law/help/statutes-at-large/79th-congress/session-1/c79s1ch388.pdf
+# * Public Law 89-387 (1966-04-13) reinstituted a national standard for DST,
+# from April's last Sunday to October's last Sunday, effective 1967.
+# https://www.govinfo.gov/content/pkg/STATUTE-80/pdf/STATUTE-80-Pg107.pdf
+# * Public Law 93-182 (1973-12-15) moved the 1974 spring-forward to 01-06.
+# https://www.govinfo.gov/content/pkg/STATUTE-87/pdf/STATUTE-87-Pg707.pdf
+# * Public Law 93-434 (1974-10-05) moved the 1975 spring-forward to
+# February's last Sunday.
+# https://www.govinfo.gov/content/pkg/STATUTE-88/pdf/STATUTE-88-Pg1209.pdf
+# * Public Law 99-359 (1986-07-08) moved the spring-forward to April's first
+# Sunday.
+# https://www.govinfo.gov/content/pkg/STATUTE-100/pdf/STATUTE-100-Pg764.pdf
+# * Public Law 109-58 (2005-08-08), effective 2007, moved the spring-forward
+# to March's second Sunday and the fall-back to November's first Sunday.
+# https://www.govinfo.gov/content/pkg/PLAW-109publ58/pdf/PLAW-109publ58.pdf
+# All transitions are at 02:00 local time.
# From Arthur David Olson:
# Before the Uniform Time Act of 1966 took effect in 1967, observance of
@@ -152,11 +175,11 @@ Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
Rule US 1918 1919 - Oct lastSun 2:00 0 S
Rule US 1942 only - Feb 9 2:00 1:00 W # War
Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule US 1945 only - Sep lastSun 2:00 0 S
+Rule US 1945 only - Sep 30 2:00 0 S
Rule US 1967 2006 - Oct lastSun 2:00 0 S
Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
Rule US 1974 only - Jan 6 2:00 1:00 D
-Rule US 1975 only - Feb 23 2:00 1:00 D
+Rule US 1975 only - Feb lastSun 2:00 1:00 D
Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
@@ -173,7 +196,7 @@ Rule US 2007 max - Nov Sun>=1 2:00 0 S
# increase the chances that they'll actually get compiled and to
# avoid the need to duplicate the US rules in another file.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone EST -5:00 - EST
Zone MST -7:00 - MST
Zone HST -10:00 - HST
@@ -330,7 +353,7 @@ Rule NYC 1920 only - Oct lastSun 2:00 0 S
Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
-5:00 US E%sT 1920
-5:00 NYC E%sT 1942
@@ -390,7 +413,7 @@ Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
-6:00 US C%sT 1920
-6:00 Chicago C%sT 1936 Mar 1 2:00
@@ -458,7 +481,7 @@ Rule Denver 1920 only - Oct lastSun 2:00 0 S
Rule Denver 1921 only - May 22 2:00 0 S
Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04
-7:00 US M%sT 1920
-7:00 Denver M%sT 1942
@@ -511,7 +534,7 @@ Rule CA 1949 only - Jan 1 2:00 0 S
Rule CA 1950 1966 - Apr lastSun 1:00 1:00 D
Rule CA 1950 1961 - Sep lastSun 2:00 0 S
Rule CA 1962 1966 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
-8:00 US P%sT 1946
-8:00 CA P%sT 1967
@@ -619,7 +642,7 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
# So they won't be waiting for Alaska to join them on 2019-03-10, but will
# rather change their clocks twice in seven weeks.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32
-8:57:41 - LMT 1900 Aug 20 12:00
-8:00 - PST 1942
@@ -739,7 +762,7 @@ Zone America/Adak 12:13:22 - LMT 1867 Oct 19 12:44:35
# Note that 1933-05-21 was a Sunday.
# We're left to guess the time of day when Act 163 was approved; guess noon.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
-10:30 - HST 1933 Apr 30 2:00
-10:30 1:00 HDT 1933 May 21 12:00
@@ -769,7 +792,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
# Shanks says the 1944 experiment came to an end on 1944-03-17.
# Go with the Arizona State Library instead.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
-7:00 US M%sT 1944 Jan 1 0:01
-7:00 - MST 1944 Apr 1 0:01
@@ -795,7 +818,7 @@ Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
# quarter of Idaho county) and eastern Oregon (most of Malheur County)
# switched four weeks late in 1974.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11
-8:00 US P%sT 1923 May 13 2:00
-7:00 US M%sT 1974
@@ -867,7 +890,7 @@ Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11
Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22
-6:00 US C%sT 1920
-6:00 Indianapolis C%sT 1942
@@ -887,7 +910,7 @@ Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
Rule Marengo 1951 only - Sep lastSun 2:00 0 S
Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D
Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37
-6:00 US C%sT 1951
-6:00 Marengo C%sT 1961 Apr 30 2:00
@@ -911,7 +934,7 @@ Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D
Rule Vincennes 1960 only - Oct lastSun 2:00 0 S
Rule Vincennes 1961 only - Sep lastSun 2:00 0 S
Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53
-6:00 US C%sT 1946
-6:00 Vincennes C%sT 1964 Apr 26 2:00
@@ -932,7 +955,7 @@ Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D
Rule Perry 1960 only - Oct lastSun 2:00 0 S
Rule Perry 1961 only - Sep lastSun 2:00 0 S
Rule Perry 1962 1963 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57
-6:00 US C%sT 1946
-6:00 Perry C%sT 1964 Apr 26 2:00
@@ -948,7 +971,7 @@ Rule Pike 1955 only - May 1 0:00 1:00 D
Rule Pike 1955 1960 - Sep lastSun 2:00 0 S
Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D
Rule Pike 1961 1964 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53
-6:00 US C%sT 1955
-6:00 Pike C%sT 1965 Apr 25 2:00
@@ -970,7 +993,7 @@ Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
Rule Starke 1955 1956 - Oct lastSun 2:00 0 S
Rule Starke 1957 1958 - Sep lastSun 2:00 0 S
Rule Starke 1959 1961 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30
-6:00 US C%sT 1947
-6:00 Starke C%sT 1962 Apr 29 2:00
@@ -986,7 +1009,7 @@ Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D
Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S
Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S
Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35
-6:00 US C%sT 1946
-6:00 Pulaski C%sT 1961 Apr 30 2:00
@@ -997,7 +1020,7 @@ Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35
-5:00 US E%sT
#
# Switzerland County, Indiana, did not observe DST from 1973 through 2005.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44
-6:00 US C%sT 1954 Apr 25 2:00
-5:00 - EST 1969
@@ -1022,7 +1045,7 @@ Rule Louisville 1941 only - Sep lastSun 2:00 0 S
Rule Louisville 1946 only - Jun 2 2:00 0 S
Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S
Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58
-6:00 US C%sT 1921
-6:00 Louisville C%sT 1942
@@ -1128,7 +1151,7 @@ Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
Rule Detroit 1948 only - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Detroit -5:32:11 - LMT 1905
-6:00 - CST 1915 May 15 2:00
-5:00 - EST 1942
@@ -1145,7 +1168,7 @@ Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
Rule Menominee 1946 only - Sep lastSun 2:00 0 S
Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
Rule Menominee 1966 only - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
-6:00 US C%sT 1946
-6:00 Menominee C%sT 1969 Apr 27 2:00
@@ -1379,7 +1402,7 @@ Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D
Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S
#
# St John's has an apostrophe, but Posix file names can't have apostrophes.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/St_Johns -3:30:52 - LMT 1884
-3:30:52 StJohns N%sT 1918
-3:30:52 Canada N%sT 1919
@@ -1392,7 +1415,7 @@ Zone America/St_Johns -3:30:52 - LMT 1884
# most of east Labrador
# The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
-3:30:52 - NST 1918
-3:30:52 Canada N%sT 1919
@@ -1466,7 +1489,7 @@ Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D
Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S
Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D
Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
-4:00 Halifax A%sT 1918
-4:00 Canada A%sT 1919
@@ -1504,7 +1527,7 @@ Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
-5:00 - EST 1902 Jun 15
-4:00 Canada A%sT 1933
@@ -1533,7 +1556,7 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
# For lack of better info, guess this practice began around 1970, contra to
# Shanks & Pottenger who have this region observing AST/ADT.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Blanc-Sablon -3:48:28 - LMT 1884
-4:00 Canada A%sT 1970
-4:00 - AST
@@ -1701,19 +1724,10 @@ Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D
# was meant.
Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S
Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D
-# The 1927-to-1939 rules can be expressed more simply as
-# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S
-# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D
-# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D
-# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S
-# The rules below avoid use of Sun>=25
-# (which pre-2004 versions of zic cannot handle).
-Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S
-Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D
-Rule Toronto 1932 only - May 1 2:00 1:00 D
-Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D
-Rule Toronto 1933 only - Oct 1 2:00 0 S
-Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S
+Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S
+Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D
+Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D
+Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S
Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S
Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D
Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D
@@ -1746,7 +1760,7 @@ Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
# War,... [t]he cities agreed to implement DST during the summer
# months for the remainder of the war years.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Toronto -5:17:32 - LMT 1895
-5:00 Canada E%sT 1919
-5:00 Toronto E%sT 1942 Feb 9 2:00s
@@ -1821,7 +1835,7 @@ Rule Winn 1963 only - Sep 22 2:00 0 S
Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D
Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S
Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
-6:00 Winn C%sT 2006
-6:00 Canada C%sT
@@ -1843,6 +1857,13 @@ Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
# Willett (1914-03) notes that DST "has been in operation ... in the
# City of Moose Jaw, Saskatchewan, for one year."
+# From Paul Eggert (2019-04-26):
+# Chris Pearce's book "The Great Daylight Saving Time Controversy" (2017)
+# says that Regina observed DST in 1914-1917. No dates and times,
+# unfortunately. It also says that in 1914 Saskatoon observed DST
+# from 1 June to 6 July, and that DST was also tried out in Davidson,
+# Melfort, and Prince Albert.
+
# From Paul Eggert (2006-03-22):
# Shanks & Pottenger say that since 1970 this region has mostly been as Regina.
# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
@@ -1905,7 +1926,7 @@ Rule Swift 1957 only - Oct lastSun 2:00 0 S
Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
Rule Swift 1959 only - Oct lastSun 2:00 0 S
Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Regina -6:58:36 - LMT 1905 Sep
-7:00 Regina M%sT 1960 Apr lastSun 2:00
-6:00 - CST
@@ -1936,7 +1957,7 @@ Rule Edm 1969 only - Apr lastSun 2:00 1:00 D
Rule Edm 1969 only - Oct lastSun 2:00 0 S
Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
Rule Edm 1972 2006 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Edmonton -7:33:52 - LMT 1906 Sep
-7:00 Edm M%sT 1987
-7:00 Canada M%sT
@@ -2029,7 +2050,7 @@ Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
Rule Vanc 1946 only - Oct 13 2:00 0 S
Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Vancouver -8:12:28 - LMT 1884
-8:00 Vanc P%sT 1987
-8:00 Canada P%sT
@@ -2100,7 +2121,7 @@ Zone America/Creston -7:46:04 - LMT 1884
# varying the manner of reckoning standard time.
#
# * Yukon Territory Commissioner's Order 1966-20 Interpretation Ordinance
-# http://? - no online source found
+# [no online source found]
#
# * Standard Time and Time Zones in Canada; Thomson, Malcolm M.; JRASC,
# Vol. 64, pp.129-162; June 1970; SAO/NASA Astrophysics Data System (ADS)
@@ -2133,7 +2154,7 @@ Zone America/Creston -7:46:04 - LMT 1884
# to say eight hours behind Greenwich Time.
#
# * O.I.C. 1980/02 INTERPRETATION ACT
-# http://? - no online source found
+# [no online source found]
#
# * Yukon Daylight Saving Time, YOIC 1987/56
# https://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html
@@ -2349,7 +2370,7 @@ Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# aka Panniqtuuq
Zone America/Pangnirtung 0 - -00 1921 # trading post est.
-4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
@@ -2496,7 +2517,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
# From Paul Eggert (2001-03-03):
#
-# http://www.latimes.com/news/nation/20010303/t000018766.html
+# https://www.latimes.com/archives/la-xpm-2001-mar-03-mn-32561-story.html
# James F. Smith writes in today's LA Times
# * Sonora will continue to observe standard time.
# * Last week Mexico City's mayor Andrés Manuel López Obrador decreed that
@@ -2623,7 +2644,7 @@ Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
Rule Mexico 2001 only - Sep lastSun 2:00 0 S
Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
Rule Mexico 2002 max - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Quintana Roo; represented by Cancún
Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
-6:00 - CST 1981 Dec 23
@@ -2816,7 +2837,7 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
@@ -2831,7 +2852,7 @@ 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 GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown
-3:58:29 - BMT 1932 # Bridgetown Mean Time
-4:00 Barb A%sT
@@ -2845,7 +2866,7 @@ Rule Belize 1973 only - Dec 5 0:00 1:00 CDT
Rule Belize 1974 only - Feb 9 0:00 0 CST
Rule Belize 1982 only - Dec 18 0:00 1:00 CDT
Rule Belize 1983 only - Feb 12 0:00 0 CST
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Belize -5:52:48 - LMT 1912 Apr
-6:00 Belize %s
@@ -2862,7 +2883,7 @@ Zone America/Belize -5:52:48 - LMT 1912 Apr
# Friday, the same thing will happen in Bermuda.
# http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
-4:00 - AST 1974 Apr 28 2:00
-4:00 Canada A%sT 1976
@@ -2884,7 +2905,7 @@ Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
Rule CR 1991 only - Jul 1 0:00 0 S
Rule CR 1992 only - Mar 15 0:00 0 S
# There are too many San Josés elsewhere, so we'll use 'Costa Rica'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José
-5:36:13 - SJMT 1921 Jan 15 # San José Mean Time
-6:00 CR C%sT
@@ -3090,7 +3111,7 @@ Rule Cuba 2012 only - Apr 1 0:00s 1:00 D
Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S
Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Havana -5:29:28 - LMT 1890
-5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
-5:00 Cuba C%sT
@@ -3125,7 +3146,7 @@ Rule DR 1969 1973 - Oct lastSun 0:00 0:30 -0430
Rule DR 1970 only - Feb 21 0:00 0 EST
Rule DR 1971 only - Jan 20 0:00 0 EST
Rule DR 1972 1974 - Jan 21 0:00 0 EST
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Santo_Domingo -4:39:36 - LMT 1890
-4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
-5:00 DR %s 1974 Oct 27
@@ -3140,7 +3161,7 @@ Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
# There are too many San Salvadors elsewhere, so use America/El_Salvador
# instead of America/San_Salvador.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
-6:00 Salv C%sT
@@ -3173,7 +3194,7 @@ Rule Guat 1991 only - Mar 23 0:00 1:00 D
Rule Guat 1991 only - Sep 7 0:00 0 S
Rule Guat 2006 only - Apr 30 0:00 1:00 D
Rule Guat 2006 only - Oct 1 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
-6:00 Guat C%sT
@@ -3259,7 +3280,7 @@ Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D
Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S
Rule Haiti 2017 max - Mar Sun>=8 2:00 1:00 D
Rule Haiti 2017 max - Nov Sun>=1 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Port-au-Prince -4:49:20 - LMT 1890
-4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
-5:00 Haiti E%sT
@@ -3298,7 +3319,7 @@ Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
-6:00 Hond C%sT
#
@@ -3319,7 +3340,7 @@ Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
# Neita L. The politician in all of us. Jamaica Observer 2014-09-20
# http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston
-5:07:10 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1974
@@ -3327,7 +3348,7 @@ Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston
-5:00 - EST
# Martinique
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
-4:04:20 - FFMT 1911 May # Fort-de-France MT
-4:00 - AST 1980 Apr 6
@@ -3391,7 +3412,7 @@ Rule Nic 2005 only - Apr 10 0:00 1:00 D
Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
Rule Nic 2006 only - Apr 30 2:00 1:00 D
Rule Nic 2006 only - Oct Sun>=1 1:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Managua -5:45:08 - LMT 1890
-5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
-6:00 - CST 1973 May
@@ -3403,7 +3424,7 @@ Zone America/Managua -5:45:08 - LMT 1890
-6:00 Nic C%sT
# Panama
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Panama -5:18:08 - LMT 1890
-5:19:36 - CMT 1908 Apr 22 # Colón Mean Time
-5:00 - EST
@@ -3411,7 +3432,7 @@ Link America/Panama America/Cayman
# Puerto Rico
# There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
-4:00 - AST 1942 May 3
-4:00 US A%sT 1946
@@ -3423,7 +3444,7 @@ Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-4:00 - AST 1980 May
-3:00 - -03 1987
@@ -3469,7 +3490,7 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
# by March 2018 for TCI. Magnetic Media. 2017-08-25.
# http://magneticmediatv.com/2017/08/time-change-back-by-march-2018-for-tci/
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:07:10 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1979
diff --git a/pacificnew b/pacificnew
index 0e6cf079234f..8403219f6236 100644
--- a/pacificnew
+++ b/pacificnew
@@ -21,7 +21,7 @@
## Rule Twilite XXXX max uspres Nov Sun>=7 2:00 0 S
## Rule Twilite XXXX max nonpres Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
+# Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL]
## Zone America/Los_Angeles-PET -8:00 US P%sT XXXX
## -8:00 Twilite P%sT
diff --git a/southamerica b/southamerica
index b66cb88b135e..397a2cc3acd4 100644
--- a/southamerica
+++ b/southamerica
@@ -396,7 +396,7 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 -
# plus is that this silences a zic complaint that there's no POSIX TZ
# setting for timestamps past 2038.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
#
# Buenos Aires (BA), Capital Federal (CF),
Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
@@ -577,7 +577,7 @@ Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
Link America/Curacao America/Aruba
# Bolivia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/La_Paz -4:32:36 - LMT 1890
-4:32:36 - CMT 1931 Oct 15 # Calamarca MT
-4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST
@@ -920,14 +920,13 @@ Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
# removed Tocantins.
Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
-Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
+Rule Brazil 2016 2019 - Feb Sun>=15 0:00 0 -
# From Steffen Thorsen (2017-12-18):
# According to many media sources, next year's DST start in Brazil will move to
-# the first Sunday of November, and it will stay like that for the years after.
+# the first Sunday of November
# ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html
# From Steffen Thorsen (2017-12-20):
# http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm
-#
# From Fábio Gomes (2018-10-04):
# The Brazilian president just announced a new change on this year DST.
# It was scheduled to start on November 4th and it was changed to November 18th.
@@ -935,22 +934,21 @@ Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
# The Brazilian government just announced that the change in DST was
# canceled.... Maybe the president Michel Temer also woke up one hour
# earlier today. :)
-Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 -
-Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
-Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
-Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
-Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
-Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
-Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
-Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
-# From Arthur David Olson (2008-09-29):
-# The next is wrong in some years but is better than nothing.
-Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
-
-# The latest ruleset listed above says that the following states observe DST:
+Rule Brazil 2018 only - Nov Sun>=1 0:00 1:00 -
+# The last ruleset listed above says that the following states observed DST:
# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
+#
+# From Steffen Thorsen (2019-04-05):
+# According to multiple sources the Brazilian president wants to get rid of DST.
+# https://gmconline.com.br/noticias/politica/bolsonaro-horario-de-verao-deve-acabar-este-ano
+# https://g1.globo.com/economia/noticia/2019/04/05/governo-anuncia-fim-do-horario-de-verao.ghtml
+# From Marcus Diniz (2019-04-25):
+# Brazil no longer has DST changes - decree signed today
+# https://g1.globo.com/politica/noticia/2019/04/25/bolsonaro-assina-decreto-que-acaba-com-o-horario-de-verao.ghtml
+# From Daniel Soares de Oliveira (2019-04-26):
+# http://www.planalto.gov.br/ccivil_03/_Ato2019-2022/2019/Decreto/D9772.htm
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
#
# Fernando de Noronha (administratively part of PE)
Zone America/Noronha -2:09:40 - LMT 1914
@@ -1258,6 +1256,8 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
# https://twitter.com/MinEnergia/status/1029009354001973248
# "We will keep the new time policy unchanged for at least the next 4 years."
# So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
+# From Juan Correa (2019-02-04):
+# http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
@@ -1298,7 +1298,7 @@ Rule Chile 2019 max - Apr Sun>=2 3:00u 0 -
Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 -
# IATA SSIM anomalies: (1992-02) says 1992-03-14;
# (1996-09) says 1998-03-08. Ignore these.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Santiago -4:42:46 - LMT 1890
-4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
-5:00 - -05 1916 Jul 1
@@ -1347,7 +1347,7 @@ Zone Pacific/Easter -7:17:28 - LMT 1890
# Palmer has followed Chile. Prior to that, before the Falklands War,
# Palmer used to be supplied from Argentina.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Antarctica/Palmer 0 - -00 1965
-4:00 Arg -04/-03 1969 Oct 5
-3:00 Arg -03/-02 1982 May
@@ -1362,7 +1362,7 @@ Zone Antarctica/Palmer 0 - -00 1965
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule CO 1992 only - May 3 0:00 1:00 -
Rule CO 1993 only - Apr 4 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
-4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
-5:00 CO -05/-04
@@ -1387,7 +1387,7 @@ Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
# Netherlands as Kingdom Islands. This won't affect their time zones
# though, as far as we know.
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
-4:30 - -0430 1965
-4:00 - AST
@@ -1423,7 +1423,7 @@ Link America/Curacao America/Kralendijk # Caribbean Netherlands
Rule Ecuador 1992 only - Nov 28 0:00 1:00 -
Rule Ecuador 1993 only - Feb 5 0:00 0 -
#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Guayaquil -5:19:20 - LMT 1890
-5:14:00 - QMT 1931 # Quito Mean Time
-5:00 Ecuador -05/-04
@@ -1526,7 +1526,7 @@ Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 -
Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/Stanley -3:51:24 - LMT 1890
-3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
-4:00 Falk -04/-03 1983 May
@@ -1535,13 +1535,13 @@ Zone Atlantic/Stanley -3:51:24 - LMT 1890
-3:00 - -03
# French Guiana
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Cayenne -3:29:20 - LMT 1911 Jul
-4:00 - -04 1967 Oct
-3:00 - -03
# Guyana
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# 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
@@ -1635,7 +1635,7 @@ Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
Rule Para 2013 max - Mar Sun>=22 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Asuncion -3:50:40 - LMT 1890
-3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
-4:00 - -04 1972 Oct
@@ -1664,13 +1664,13 @@ Rule Peru 1990 only - Apr 1 0:00 0 -
# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
Rule Peru 1994 only - Jan 1 0:00 1:00 -
Rule Peru 1994 only - Apr 1 0:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Lima -5:08:12 - LMT 1890
-5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
-5:00 Peru -05/-04
# South Georgia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
-2:00 - -02
@@ -1678,7 +1678,7 @@ Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
# uninhabited; scientific personnel have wintered
# Suriname
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Paramaribo -3:40:40 - LMT 1911
-3:40:52 - PMT 1935 # Paramaribo Mean Time
-3:40:36 - PMT 1945 Oct # The capital moved?
@@ -1686,7 +1686,7 @@ Zone America/Paramaribo -3:40:40 - LMT 1911
-3:00 - -03
# Trinidad and Tobago
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
-4:00 - AST
@@ -1957,7 +1957,7 @@ Zone America/Montevideo -3:44:51 - LMT 1908 Jun 10
# ... published in the official Gazette [2016-04-18], here:
# http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Caracas -4:27:44 - LMT 1890
-4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
-4:30 - -0430 1965 Jan 1 0:00
diff --git a/systemv b/systemv
index 24c8f64197a8..a8c037cd2c86 100644
--- a/systemv
+++ b/systemv
@@ -23,7 +23,7 @@ Rule SystemV 1975 only - Oct lastSun 2:00 0 S
Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
Rule SystemV 1976 max - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
+# Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL]
## Zone SystemV/AST4ADT -4:00 SystemV A%sT
## Zone SystemV/EST5EDT -5:00 SystemV E%sT
## Zone SystemV/CST6CDT -6:00 SystemV C%sT
diff --git a/theory.html b/theory.html
index e37302234daf..e0b32335867d 100644
--- a/theory.html
+++ b/theory.html
@@ -88,7 +88,7 @@ href="https://en.wikipedia.org/wiki/POSIX">POSIX</a>, an international
standard for <a
href="https://en.wikipedia.org/wiki/Unix">UNIX</a>-like systems.
As of this writing, the current edition of POSIX is: <a
-href="http://pubs.opengroup.org/onlinepubs/9699919799/"> The Open
+href="https://pubs.opengroup.org/onlinepubs/9699919799/"> The Open
Group Base Specifications Issue 7</a>, IEEE Std 1003.1-2017, 2018
Edition.
Because the database's scope encompasses real-world changes to civil
@@ -186,7 +186,7 @@ in decreasing order of importance:
href="https://en.wikipedia.org/wiki/ASCII">ASCII</a> letters,
'<code>.</code>', '<code>-</code>' and '<code>_</code>'.
Do not use digits, as that might create an ambiguity with <a
- href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03">POSIX
+ href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03">POSIX
<code>TZ</code> strings</a>.
A file name component must not exceed 14 characters or start with
'<code>-</code>'.
@@ -301,7 +301,7 @@ in decreasing order of importance:
<p>
Guidelines have evolved with time, and names following old versions of
-this guideline might not follow the current version. When guidelines
+these guidelines might not follow the current version. When guidelines
have changed, old names continue to be supported. Guideline changes
have included the following:
</p>
@@ -330,7 +330,7 @@ and the file '<code>northamerica</code>' defines the legacy names
</li>
<li>
-Older versions of this guideline said that
+Older versions of these guidelines said that
there should typically be at least one name for each <a
href="https://en.wikipedia.org/wiki/ISO_3166-1"><abbr
title="International Organization for Standardization">ISO</abbr>
@@ -379,8 +379,8 @@ in decreasing order of importance:
special meaning to the
<a href="https://en.wikipedia.org/wiki/Unix_shell">UNIX shell</a>
and cause commands like
- '<code><a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#set">set</a>
- `<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/date.html">date</a>`</code>'
+ '<code><a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#set">set</a>
+ `<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/date.html">date</a>`</code>'
to have unexpected effects.
Previous editions of this guideline required upper-case letters, but the
Congressman who introduced
@@ -955,7 +955,7 @@ an older <code>zic</code>.
</li>
<li>
In POSIX, there is no tamper-proof way for a process to learn the
- system's best idea of local wall clock.
+ system's best idea of local (wall clock) time.
This is important for applications that an administrator wants
used only at certain times &ndash; without regard to whether the
user has fiddled the
@@ -1052,14 +1052,14 @@ an older <code>zic</code>.
</li>
<li>
A function <code>tzsetwall</code> has been added to arrange for the
- system's best approximation to local wall clock time to be delivered
+ system's best approximation to local (wall clock) time to be delivered
by subsequent calls to <code>localtime</code>.
- Source code for portable applications that "must" run on local wall
- clock time should call <code>tzsetwall</code>;
+ Source code for portable applications that "must" run on local
+ time should call <code>tzsetwall</code>;
if such code is moved to "old" systems that do not
provide <code>tzsetwall</code>, you will not be able to generate an
executable program.
- (These functions also arrange for local wall clock time to
+ (These functions also arrange for local time to
be used if <code>tzset</code> is called &ndash; directly or
indirectly &ndash; and there is no <code>TZ</code> environment
variable; portable applications should not, however, rely on this
@@ -1354,11 +1354,11 @@ Sources for time on other planets:
Michael Allison and Robert Schmunk,
"<a href="https://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical
Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a>"
- (2015-06-30).
+ (2018-12-13).
</li>
<li>
Jia-Rui Chong,
- "<a href="http://articles.latimes.com/2004/jan/14/science/sci-marstime14">Workdays
+ "<a href="https://www.latimes.com/archives/la-xpm-2004-jan-14-sci-marstime14-story.html">Workdays
Fit for a Martian</a>", <cite>Los Angeles Times</cite>
(2004-01-14), pp A1, A20&ndash;A21.
</li>
diff --git a/version b/version
index 149d790c3d12..8d4a43baf40b 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-2019a
+2019b
diff --git a/zishrink.awk b/zishrink.awk
index 8876b68a095c..4e187ac5814b 100644
--- a/zishrink.awk
+++ b/zishrink.awk
@@ -20,7 +20,8 @@ function record_hash(n, name)
# Return a shortened rule name representing NAME,
# and record this relationship to the hash table.
-function gen_rule_name(name, n)
+function gen_rule_name(name, \
+ n)
{
# Use a simple memonic: the first two letters.
n = substr(name, 1, 2)
@@ -29,7 +30,8 @@ function gen_rule_name(name, n)
return n
}
-function prehash_rule_names(name)
+function prehash_rule_names( \
+ name)
{
# Rule names are not part of the tzdb API, so substitute shorter
# ones. Shortening them consistently from one release to the next
@@ -148,20 +150,21 @@ function prehash_rule_names(name)
}
}
-# Process an input line and save it for later output.
+# Process the input line LINE and save it for later output.
-function process_input_line(line, field, end, i, n, startdef)
+function process_input_line(line, \
+ field, end, i, n, startdef, \
+ linkline, ruleline, zoneline)
{
# Remove comments, normalize spaces, and append a space to each line.
sub(/#.*/, "", line)
line = line " "
gsub(/[\t ]+/, " ", line)
- # Abbreviate keywords. Do not abbreviate "Link" to just "L",
- # as pre-2017c zic erroneously diagnoses "Li" as ambiguous.
- sub(/^Link /, "Li ", line)
- sub(/^Rule /, "R ", line)
- sub(/^Zone /, "Z ", line)
+ # Abbreviate keywords and determine line type.
+ linkline = sub(/^Link /, "L ", line)
+ ruleline = sub(/^Rule /, "R ", line)
+ zoneline = sub(/^Zone /, "Z ", line)
# SystemV rules are not needed.
if (line ~ /^R SystemV /) return
@@ -169,7 +172,7 @@ function process_input_line(line, field, end, i, n, startdef)
# Replace FooAsia rules with the same rules without "Asia", as they
# are duplicates.
if (match(line, /[^ ]Asia /)) {
- if (line ~ /^R /) return
+ if (ruleline) return
line = substr(line, 1, RSTART) substr(line, RSTART + 5)
}
@@ -179,21 +182,19 @@ function process_input_line(line, field, end, i, n, startdef)
while (match(line, /:0[^:]/))
line = substr(line, 1, RSTART - 1) substr(line, RSTART + 2)
- # Abbreviate weekday names. Do not abbreviate "Sun" and "Sat", as
- # pre-2017c zic erroneously diagnoses "Su" and "Sa" as ambiguous.
+ # Abbreviate weekday names.
while (match(line, / (last)?(Mon|Wed|Fri)[ <>]/)) {
end = RSTART + RLENGTH
line = substr(line, 1, end - 4) substr(line, end - 1)
}
- while (match(line, / (last)?(Tue|Thu)[ <>]/)) {
+ while (match(line, / (last)?(Sun|Tue|Thu|Sat)[ <>]/)) {
end = RSTART + RLENGTH
line = substr(line, 1, end - 3) substr(line, end - 1)
}
- # Abbreviate "max", "only" and month names.
- # Do not abbreviate "min", as pre-2017c zic erroneously diagnoses "mi"
- # as ambiguous.
+ # Abbreviate "max", "min", "only" and month names.
gsub(/ max /, " ma ", line)
+ gsub(/ min /, " mi ", line)
gsub(/ only /, " o ", line)
gsub(/ Jan /, " Ja ", line)
gsub(/ Feb /, " F ", line)
@@ -221,7 +222,7 @@ function process_input_line(line, field, end, i, n, startdef)
n = split(line, field)
# Abbreviate rule names.
- i = field[1] == "Z" ? 4 : field[1] == "Li" ? 0 : 2
+ i = zoneline ? 4 : linkline ? 0 : 2
if (i && field[i] ~ /^[^-+0-9]/) {
if (!rule[field[i]])
rule[field[i]] = gen_rule_name(field[i])
@@ -231,11 +232,11 @@ function process_input_line(line, field, end, i, n, startdef)
# If this zone supersedes an earlier one, delete the earlier one
# from the saved output lines.
startdef = ""
- if (field[1] == "Z")
+ if (zoneline)
zonename = startdef = field[2]
- else if (field[1] == "Li")
+ else if (linkline)
zonename = startdef = field[3]
- else if (field[1] == "R")
+ else if (ruleline)
zonename = ""
if (startdef) {
i = zonedef[startdef]
@@ -254,7 +255,8 @@ function process_input_line(line, field, end, i, n, startdef)
output_line[nout++] = line
}
-function output_saved_lines(i)
+function output_saved_lines( \
+ i)
{
for (i = 0; i < nout; i++)
if (output_line[i])
diff --git a/zone.tab b/zone.tab
index 27e1dee61efc..408fcb2051d7 100644
--- a/zone.tab
+++ b/zone.tab
@@ -332,7 +332,10 @@ RO +4426+02606 Europe/Bucharest
RS +4450+02030 Europe/Belgrade
RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad
RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area
-RU +4457+03406 Europe/Simferopol MSK+00 - Crimea
+# The obsolescent zone.tab format cannot represent Europe/Simferopol well.
+# Put it in RU section and list as UA. See "territorial claims" above.
+# Programs should use zone1970.tab instead; see above.
+UA +4457+03406 Europe/Simferopol MSK+00 - Crimea
RU +5836+04939 Europe/Kirov MSK+00 - Kirov
RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan
RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd
diff --git a/zone1970.tab b/zone1970.tab
index 9a8e4244fa30..822ffa1f1af0 100644
--- a/zone1970.tab
+++ b/zone1970.tab
@@ -289,7 +289,8 @@ RO +4426+02606 Europe/Bucharest
RS,BA,HR,ME,MK,SI +4450+02030 Europe/Belgrade
RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad
RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area
-RU +4457+03406 Europe/Simferopol MSK+00 - Crimea
+# Mention RU and UA alphabetically. See "territorial claims" above.
+RU,UA +4457+03406 Europe/Simferopol MSK+00 - Crimea
RU +5836+04939 Europe/Kirov MSK+00 - Kirov
RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan
RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd
diff --git a/zoneinfo2tdf.pl b/zoneinfo2tdf.pl
index c8c5591afee0..e07b00cae79f 100755
--- a/zoneinfo2tdf.pl
+++ b/zoneinfo2tdf.pl
@@ -28,7 +28,7 @@ while (<>) {
$contZone = '';
if ($type eq 'zone') {
- # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
+ # Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL]
my $nfields = @fields;
$nfields >= 5 or warn "bad zone line";
if ($nfields > 6) {