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authorGarrett Wollman <wollman@FreeBSD.org>1996-07-17 19:27:18 +0000
committerGarrett Wollman <wollman@FreeBSD.org>1996-07-17 19:27:18 +0000
commit45ba141cad828107964a6f487ca93845c2f34f5a (patch)
tree90b1b33b56b06a0f494c1424b9d29a27532f99f4 /share/zoneinfo/northamerica
parent36cb3404b65b0215c21bc0485d3c2a03efec1609 (diff)
downloadsrc-45ba141cad828107964a6f487ca93845c2f34f5a.tar.gz
src-45ba141cad828107964a6f487ca93845c2f34f5a.zip
New timezone data files from Arthur Olson. These files are in
the public domain. More descriptions will follow when they are merged onto the main branch.
Notes
Notes: svn path=/vendor/tzdata/dist/; revision=17198
Diffstat (limited to 'share/zoneinfo/northamerica')
-rw-r--r--share/zoneinfo/northamerica337
1 files changed, 209 insertions, 128 deletions
diff --git a/share/zoneinfo/northamerica b/share/zoneinfo/northamerica
index d1427900ddc1..57719816f9bb 100644
--- a/share/zoneinfo/northamerica
+++ b/share/zoneinfo/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica 7.22
+# @(#)northamerica 7.26
# also includes Central America and the Caribbean
# This data is by no means authoritative; if you think you know better,
@@ -21,6 +21,24 @@
# Make sure you have the errata sheet; the book is somewhat useless without it.
# It is the source for the US and Puerto Rico entries below.
+# From Paul Eggert (1996-06-12):
+# Daylight Saving Time was first suggested as a joke by Benjamin Franklin
+# in his whimsical essay ``Turkey vs Eagle, McCauley is my Beagle'' (1784).
+# Not everyone is happy with the results:
+#
+# I don't really care how time is reckoned so long as there is some
+# agreement about it, but I object to being told that I am saving
+# daylight when my reason tells me that I am doing nothing of the kind.
+# I even object to the implication that I am wasting something
+# valuable if I stay in bed after the sun has risen. As an admirer
+# of moonlight I resent the bossy insistence of those who want to
+# reduce my time for enjoying it. At the back of the Daylight Saving
+# scheme I detect the bony, blue-fingered hand of Puritanism, eager
+# to push people into bed earlier, and get them up earlier, to make
+# them healthy, wealthy and wise in spite of themselves.
+#
+# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday
+
# 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, October 26, 1974
@@ -160,11 +178,11 @@ 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 America/Denver -6:59:56 - LMT 1883 Nov 18 12:00
- -7:00 US E%sT 1920
- -7:00 Denver E%sT 1942
- -7:00 US E%sT 1946
- -7:00 Denver E%sT 1967
- -7:00 US E%sT
+ -7:00 US M%sT 1920
+ -7:00 Denver M%sT 1942
+ -7:00 US M%sT 1946
+ -7:00 Denver M%sT 1967
+ -7:00 US M%sT
# US Pacific time, represented by Los Angeles
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
@@ -461,82 +479,8 @@ Link Pacific/Honolulu HST
#
# See the `africa' file for Zone naming conventions.
-
-
# Canada
-# Canada is reportedly lots easier than the US--leastways since 1951.
-# I don't know what they did before then.
-# 4.3BSD claims that it's perfectly regular.
-# According to a posting in "comp.bugs.misc", "comp.unix.wizards", etc.
-# on February 8, 1987, by Dave Sherman of the Law Society of Upper Canada,
-# "...Canada (well, Ontario and at least some of the other provinces) are
-# adopting the new daylight savings time rules...". We assume all of
-# Canada is doing so.
-
-# From Bob Devine (January 28, 1988):
-# All of Canada did have DST from your first rule except Saskatchewan.
-# Which parts did not observe DST is hard to pinpoint but most of the
-# province follows the rules.
-# NOTE: those that didn't have DST for that rule, also
-# probably did not have it for several years previous.
-
-# From U. S. Naval Observatory (January 19, 1989):
-# CANADA NEW FDL 3.5H BEHIND UTC ST.JOHN'S
-# CANADA NEW FDL 1.5H BEHIND UTC APR 3 - OCT 29
-# CANADA ATLANTIC 4 H BEHIND UTC HALIFAX
-# CANADA ATLANTIC 3 H BEHIND UTC APR 3 - OCT 29
-# CANADA EASTERN 5 H BEHIND UTC TORONTO, MONTREAL, OTTAWA
-# CANADA EASTERN 4 H BEHIND UTC APR 3 - OCT 29
-# CANADA CENTRAL 6 H BEHIND UTC REGINA, WINNIPEG
-# CANADA CENTRAL 5 H BEHIND UTC APR 3 - OCT 29
-# CANADA MOUNTAIN 7 H BEHIND UTC CALGARY, EDMONTON
-# CANADA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 29
-# CANADA PACIFIC 8 H BEHIND UTC VANCOUVER
-# CANADA PACIFIC 7 H BEHIND UTC APR 3 - OCT 29
-# CANADA YUKON SAME AS PACIFIC DAWSON
-
-# From Arthur David Olson (January 21, 1989):
-# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
-# Note claim that there's double DST in Newfoundland and that Yukon should
-# be same as Pacific.
-
-# From W. Jones (jones@skdad.usask.ca) (November 6, 1992):
-# The. . .below is based on information I got from our law library, the
-# provincial archives, and the provincial Community Services department.
-# A precise history would require digging through newspaper archives, and
-# since you didn't say what you wanted, I didn't bother.
-#
-# Saskatchewan is split by a time zone meridian (105W) and over the years
-# the boundary became pretty ragged as communities near it reevaluated
-# their affiliations in one direction or the other. In 1965 a provincial
-# referendum favoured legislating common time practices.
-#
-# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
-# Saskatchewan 1978) was proclaimed, and established that the eastern
-# part of Saskatchewan would use CST year round, that districts in
-# northwest Saskatchewan would by default follow CST but could opt to
-# follow Mountain Time rules (thus 1 hour difference in the winter and
-# zero in the summer), and that districts in southwest Saskatchewan would
-# by default follow MT but could opt to follow CST.
-#
-# It took a few years for the dust to settle (I know one story of a town
-# on one time zone having its school in another, such that a mom had to
-# serve her family lunch in two shifts), but presently it seems that only
-# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
-# rules any more; all other districts appear to have used CST year round
-# since sometime in the 1960s.
-#
-# Here's how I would summarize things. Establish a "Saskatchewan" CST
-# time zone, and note that it officially exists as of 15 April 1966. Any
-# current exceptions can put themselves in the "Mountain" zone, since
-# those are the rules they follow. Any past exceptions can be forgotten,
-# since that's what those who live here have done.
-
-# From Arthur David Olson (November 21, 1992):
-# East-Saskatchewan kept to avoid problems for folks using that zone by name;
-# plain Saskatchewan added.
-
# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
# I post here the time zone abbreviations standardized in Canada
# for both English and French in the CAN/CSA-Z234.4-89 standard....
@@ -569,11 +513,22 @@ Link Pacific/Honolulu HST
# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
# Alas, this sort of thing must be handled by localization software.
+# The data for Canada are all from Shanks (1991).
-# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule StJohns 1884 only - Jan 1 0:00 0 S
+Rule Canada 1918 only - Apr 14 2:00 1:00 D
+Rule Canada 1918 only - Oct 31 2:00 0 S
+Rule Canada 1942 only - Feb 9 2:00 1:00 D
+Rule Canada 1945 only - Sep 30 2:00 0 S
+Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
+Rule Canada 1974 max - Oct lastSun 2:00 0 S
+Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D
+
+
+# Newfoundland
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule StJohns 1917 1918 - Apr Sun>=8 2:00 1:00 D
Rule StJohns 1917 only - Sep 17 2:00 0 S
Rule StJohns 1918 only - Oct 31 2:00 0 S
@@ -611,8 +566,17 @@ Zone America/St_Johns -3:30:52 - LMT 1884
-3:31 StJohns N%sT 1935 Mar 30
-3:30 StJohns N%sT
+
+# Labrador, New Brunswick, Nova Scotia, Prince Edward I
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Halifax.
+# Many locales did not observe peacetime DST until 1972;
+# Glace Bay, NS is the largest that we know of.
+# Shanks also writes that Liverpool, NS was the only town in Canada to observe
+# DST in 1971 but not 1970; for now we'll assume this is a typo.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Halifax 1902 only - Jun 15 0:00 0 S
Rule Halifax 1916 only - Apr 1 0:00 1:00 D
Rule Halifax 1916 only - Oct 1 0:00 0 S
Rule Halifax 1918 only - Apr 14 2:00 1:00 D
@@ -656,9 +620,23 @@ Rule Halifax 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
-4:00 Halifax A%sT
+Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
+ -4:00 Canada A%sT 1953
+ -4:00 Halifax A%sT 1954
+ -4:00 - AST 1972
+ -4:00 Halifax A%sT
+
+
+# Ontario, Quebec
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Montreal.
+# Thunder Bay skipped DST in 1973.
+# Many smaller locales did not observe peacetime DST until 1974;
+# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
+# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mont 1884 only - Jan 1 0:00 0 S
Rule Mont 1917 only - Mar 25 2:00 1:00 D
Rule Mont 1917 only - Apr 24 0:00 0 S
Rule Mont 1918 only - Apr 14 2:00 1:00 D
@@ -690,9 +668,20 @@ Rule Mont 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Montreal -4:54:16 - LMT 1884
-5:00 Mont E%sT
+Zone America/Thunder_Bay -5:57:00 - LMT 1895
+ -5:00 Canada E%sT 1970
+ -5:00 Mont E%sT 1973
+ -5:00 - EST 1974
+ -5:00 Canada E%sT
+Zone America/Nipigon -5:53:04 - LMT 1895
+ -5:00 Canada E%sT
+Zone America/Rainy_River -6:17:56 - LMT 1895
+ -6:00 Canada C%sT
+
+
+# Manitoba
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Winn 1887 only - Jul 16 0:00 0 S
Rule Winn 1916 only - Apr 23 0:00 1:00 D
Rule Winn 1916 only - Sep 17 0:00 0 S
Rule Winn 1918 only - Apr 14 2:00 1:00 D
@@ -720,8 +709,41 @@ Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D
Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
-6:00 Winn C%sT
+
+# Saskatchewan
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Regina.
+# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
+# Other western towns (e.g. Lloydminster) are like Edmonton.
+
+# From W. Jones <jones@skdad.usask.ca> (November 6, 1992):
+# The. . .below is based on information I got from our law library, the
+# provincial archives, and the provincial Community Services department.
+# A precise history would require digging through newspaper archives, and
+# since you didn't say what you wanted, I didn't bother.
+#
+# Saskatchewan is split by a time zone meridian (105W) and over the years
+# the boundary became pretty ragged as communities near it reevaluated
+# their affiliations in one direction or the other. In 1965 a provincial
+# referendum favoured legislating common time practices.
+#
+# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
+# Saskatchewan 1978) was proclaimed, and established that the eastern
+# part of Saskatchewan would use CST year round, that districts in
+# northwest Saskatchewan would by default follow CST but could opt to
+# follow Mountain Time rules (thus 1 hour difference in the winter and
+# zero in the summer), and that districts in southwest Saskatchewan would
+# by default follow MT but could opt to follow CST.
+#
+# It took a few years for the dust to settle (I know one story of a town
+# on one time zone having its school in another, such that a mom had to
+# serve her family lunch in two shifts), but presently it seems that only
+# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
+# rules any more; all other districts appear to have used CST year round
+# since sometime in the 1960s.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Regina 1905 only - Sep 1 0:00 0 S
Rule Regina 1918 only - Apr 14 2:00 1:00 D
Rule Regina 1918 only - Oct 31 2:00 0 S
Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
@@ -732,17 +754,31 @@ Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
Rule Regina 1942 only - Feb 9 2:00 1:00 D
Rule Regina 1945 only - Sep lastSun 2:00 0 S
-Rule Regina 1946 only - Apr 14 2:00 1:00 D
-Rule Regina 1946 only - Oct 13 2:00 0 S
-Rule Regina 1947 1960 - Apr lastSun 2:00 1:00 D
-Rule Regina 1947 1959 - Sep lastSun 2:00 0 S
+Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
+Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
+Rule Regina 1947 1959 - Apr lastSun 2:00 1:00 D
+Rule Regina 1947 1958 - Sep lastSun 2:00 0 S
+Rule Regina 1959 only - Oct lastSun 2:00 0 S
+#
+Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
+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 America/Regina -6:58:36 - LMT 1905 Sep
- -7:00 Regina M%sT 1966 Apr 15
+Zone America/Regina -6:58:36 - LMT 1905 Sep
+ -7:00 Regina M%sT 1960 Apr lastSun 2:00
-6:00 - CST
+Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
+ -7:00 Canada M%sT 1946 Apr lastSun 2:00
+ -7:00 Regina M%sT 1950
+ -7:00 Swift M%sT 1972 Apr lastSun 2:00
+ -6:00 - CST
+
+
+# Alberta
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Edm 1906 only - Sep 1 0:00 0 S
Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
Rule Edm 1918 only - Oct 31 2:00 0 S
Rule Edm 1919 only - May 27 2:00 0 S
@@ -764,8 +800,14 @@ Rule Edm 1987 max - Apr Sun>=1 2:00 1:00 D
Zone America/Edmonton -7:33:52 - LMT 1906 Sep
-7:00 Edm M%sT
+
+# British Columbia
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Vancouver.
+# Dawswon Creek uses MST. Much of east BC is like Edmonton.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Vanc 1884 only - Jan 1 0:00 0 S
Rule Vanc 1918 only - Apr 14 2:00 1:00 D
Rule Vanc 1918 only - Oct 31 2:00 0 S
Rule Vanc 1942 only - Feb 9 2:00 1:00 D
@@ -778,24 +820,50 @@ Rule Vanc 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Vancouver -8:12:28 - LMT 1884
-8:00 Vanc P%sT
+Zone America/Dawson_Creek -8:00:56 - LMT 1884
+ -8:00 Canada P%sT 1947
+ -8:00 Vanc P%sT 1972 Aug 30 2:00
+ -7:00 - MST
+
+
+# Northwest Territories, Yukon
+
+# From Paul Eggert (1996-06-12):
+# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
+# Shanks's table for Watson Lake is corrupted, so we have no data there.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Yukon 1900 only - Jan 1 0:00 0 S
-Rule Yukon 1918 only - Apr 14 2:00 1:00 D
-Rule Yukon 1918 only - Oct 27 2:00 0 S
-Rule Yukon 1919 only - May 25 2:00 1:00 D
-Rule Yukon 1919 only - Nov 1 0:00 0 S
-Rule Yukon 1942 only - Feb 9 2:00 1:00 D
-Rule Yukon 1965 only - Apr 25 0:00 1:00 D
-Rule Yukon 1965 only - Oct 31 2:00 0 S
-Rule Yukon 1980 1986 - Apr lastSun 2:00 1:00 D
-Rule Yukon 1980 max - Oct lastSun 2:00 0 S
-Rule Yukon 1987 max - Apr Sun>=1 2:00 1:00 D
+Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
+Rule NT_YK 1918 only - Oct 27 2:00 0 S
+Rule NT_YK 1919 only - May 25 2:00 1:00 D
+Rule NT_YK 1919 only - Nov 1 0:00 0 S
+Rule NT_YK 1942 only - Feb 9 2:00 1:00 D
+Rule NT_YK 1945 only - Sep 30 2:00 0 S
+# 0:00 ??
+Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
+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 max - Oct lastSun 2:00 0 S
+Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Pangnirtung -4:22:56 - LMT 1884
+ -4:00 NT_YK A%sT
+Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay
+ -5:00 NT_YK E%sT
+Zone America/Rankin_Inlet -6:08:40 - LMT 1884
+ -6:00 NT_YK C%sT
+Zone America/Yellowknife -7:37:24 - LMT 1884
+ -7:00 NT_YK M%sT
+Zone America/Inuvik -8:54:00 - LMT 1884
+ -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
+ -7:00 NT_YK M%sT
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
- -9:00 Yukon Y%sT 1966 Jul
- -8:00 Yukon P%sT
-# Parts of Yukon (e.g. Dawson) didn't switch to -8:00 until 1973 Oct 28.
+ -9:00 NT_YK Y%sT 1966 Jul 1 2:00
+ -8:00 NT_YK P%sT
+Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
+ -9:00 NT_YK Y%sT 1973 Oct lastSun 2:00
+ -8:00 NT_YK P%sT
+
###############################################################################
@@ -848,22 +916,45 @@ Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
# a zone that's GMT-8 with DST; a zone that's always GMT-7;
# a zone that's GMT-6 with DST; and a zone that's always GMT-6.
-# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
+# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
# Shanks also says there are four zones, but disagrees about the fourth.
# Instead of GMT-6 with DST, he says there's GMT-8 without DST.
-# From Paul Eggert (1996-02-07):
-# Today in news:4f90v4$g6g@news.internet.com.mx, Kevin Pitts
-# <bravo2@internet.com.mx> wrote that Mexico will use Horario de Verano (DST)
-# starting this year with the same rules as the US, and gave FIDE as a source.
-# (FIDE is a private organization that promotes efficient electrical use.)
-# On 1996-02-02 Mario Camou wrote that the transition times are Apr Sun>=1
-# 0:00 and Nov 1 0:00 but also wrote ``The DST-out date looks a bit fishy''.
-# Go with Pitts after 1996, and with Shanks before that.
+# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15):
+# A guy from our Mexico subsidiary finally found the Presidential Decree
+# outlining the timezone changes in Mexico.
+#
+# ------------- Begin Forwarded Message -------------
+#
+# I finally got my hands on the Official Presidential Decree that sets up the
+# rules for the DST changes. The rules are:
+#
+# 1. The country is divided in 3 timezones:
+# - Baja California Norte (the Mexico/BajaNorte TZ)
+# - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ)
+# - The rest of the country (the Mexico/General TZ)
+#
+# 2. From the first Sunday in April at 2:00 AM to the last Sunday in October
+# at 2:00 AM, the times in each zone are as follows:
+# BajaNorte: GMT+7
+# BajaSur: GMT+6
+# General: GMT+5
+#
+# 3. The rest of the year, the times are as follows:
+# BajaNorte: GMT+8
+# BajaSur: GMT+7
+# General: GMT+6
+#
+# The Decree was published in Mexico's Official Newspaper on January 4th.
+#
+# -------------- End Forwarded Message --------------
+# From Paul Eggert (1996-06-12):
+# For an English translation of the decree,
+# see ``Diario Oficial: Time Zone Changeover'',
+# <URL:http://mexico-travel.com/extra/timezone_eng.html> (1996-01-04).
# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mexico 1922 only - Jan 1 0:00 0 S
Rule Mexico 1939 only - Feb 5 0:00 1:00 D
Rule Mexico 1939 only - Jun 25 0:00 0 S
Rule Mexico 1940 only - Dec 9 0:00 1:00 D
@@ -930,7 +1021,6 @@ Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
# Bahamas
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Bahamas 1912 only - Mar 2 0:00 0 S
Rule Bahamas 1964 max - Oct lastSun 2:00 0 S
Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D
Rule Bahamas 1987 max - Apr Sun>=1 2:00 1:00 D
@@ -940,7 +1030,6 @@ Zone America/Nassau -5:09:24 - LMT 1912 Mar 2
# Barbados
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Barb 1932 only - Jan 1 0:00 0 S
Rule Barb 1977 only - Jun 12 2:00 1:00 D
Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
@@ -954,7 +1043,6 @@ Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
# Belize
# Whitman entirely disagrees with Shanks; go with Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Belize 1912 only - Apr 1 0:00 0 S
Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
Rule Belize 1973 only - Dec 5 0:00 1:00 D
@@ -984,7 +1072,6 @@ Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
# Shanks gives some very odd dates for 1991, and stops there.
# For now, we won't guess further.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule CR 1921 only - Jan 15 0:00 0 S
Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
Rule CR 1991 only - Jan 19 0:00 1:00 D
@@ -1010,7 +1097,6 @@ Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose
# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Cuba 1925 only - Jul 19 12:00 0 S
Rule Cuba 1928 only - Jun 10 0:00 1:00 D
Rule Cuba 1928 only - Oct 10 0:00 0 S
Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D
@@ -1049,7 +1135,6 @@ Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
# Dominican Republic
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule DR 1933 only - Apr 1 12:00 0 S
Rule DR 1966 only - Oct 30 0:00 1:00 D
Rule DR 1967 only - Feb 28 0:00 0 S
Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
@@ -1064,7 +1149,6 @@ Zone America/Santo_Domingo -4:39:36 - LMT 1890
# El Salvador
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Salv 1921 only - Jan 1 0:00 0 S
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 we'll use `El Salvador'.
@@ -1084,7 +1168,6 @@ Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre
# Guatemala
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Guat 1918 only - Oct 5 0:00 0 S
Rule Guat 1973 only - Nov 25 0:00 1:00 D
Rule Guat 1974 only - Feb 24 0:00 0 S
Rule Guat 1983 only - May 21 0:00 1:00 D
@@ -1095,7 +1178,6 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
# Haiti
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Haiti 1917 only - Jan 24 12:00 0 S
Rule Haiti 1983 only - May 8 0:00 1:00 D
Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
@@ -1142,7 +1224,6 @@ Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Plymouth
# Nicaragua
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Nic 1975 only - Feb 16 0:00 0 S
Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]