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authorRoland McGrath <roland@gnu.org>1996-01-11 10:00:22 +0000
committerRoland McGrath <roland@gnu.org>1996-01-11 10:00:22 +0000
commit72d8cdf09dead3ee9765f1978a70147ec8545a55 (patch)
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parent22930c9bf21ea15d0da1477a379029e2de259b69 (diff)
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Wed Jan 10 10:11:39 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu>cvs/libc-960111
* time/africa, time/antarctica, time/asia, time/australasia, time/europe, time/northamerica, time/pacificnew, time/solar87, time/solar88, time/solar89, time/southamerica: Updated from ADO 96a.
Diffstat (limited to 'time/northamerica')
-rw-r--r--time/northamerica405
1 files changed, 322 insertions, 83 deletions
diff --git a/time/northamerica b/time/northamerica
index bb9b414a29..c62699fcb9 100644
--- a/time/northamerica
+++ b/time/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica 7.17
+# @(#)northamerica 7.21
# also includes Central America and the Caribbean
# This data is by no means authoritative; if you think you know better,
@@ -14,25 +14,24 @@
# United States
+# From Paul Eggert <eggert@twinsun.com> (1995-12-19):
+# A good source for time zone historical data in the US is
+# Thomas G. Shanks, The American Atlas (5th edition),
+# San Diego: ACS Publications, Inc. (1991).
+# 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 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
# and Sunday, October 27, 1974 editions of the Washington Post.
-# From seismo!munnari!kre:
-# I recall also being told by someone once that Canada didn't have
-# the DST variations in 74/75 that the US did, but I am not nearly
-# sure enough of this to add anything.
-
-# From Arthur David Olson:
-# The above has been confirmed by Bob Devine; we'll go with it here.
-
# From Arthur David Olson:
# Before the Uniform Time Act of 1966 took effect in 1967, observance of
# Daylight Saving Time in the US was by local option, except during wartime.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
+Rule US 1918 1919 - Mar lastSun 2:00 1:00 W # War
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 - Sep 30 2:00 0 S
@@ -55,6 +54,10 @@ Rule US 1987 max - Apr Sun>=1 2:00 1:00 D
# The YST zone now covers nearly all of the state, AHST just part
# of the Aleutian islands. No DST.
+# From Paul Eggert (1995-12-19):
+# The tables below use `NST', not `NT', for Nome Standard Time.
+# I invented `CAWT' for Central Alaska War Time.
+
# From U. S. Naval Observatory (January 19, 1989):
# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
@@ -110,90 +113,321 @@ Rule US 1987 max - Apr Sun>=1 2:00 1:00 D
# Hawaii-Aleutian standard time
# Samoa standard time
# The law doesn't give abbreviations.
+#
+# From Paul Eggert (1995-12-19):
+# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions.
+# Go with Shanks.
+
+# US Eastern time, represented by New York
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
+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 America/New_York -4:56:02 - LMT 1883 Nov 18 12:00
+ -5:00 US E%sT 1920
+ -5:00 NYC E%sT 1942
+ -5:00 US E%sT 1946
+ -5:00 NYC E%sT 1967
+ -5:00 US E%sT
+
+# US Central time, represented by Chicago
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule Chicago 1920 only - Jun 13 2:00 1:00 D
+Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
+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 America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1920
+ -6:00 Chicago C%sT 1936 Mar 1 2:00
+ -5:00 - EST 1936 Nov 15 2:00
+ -6:00 Chicago C%sT 1942
+ -6:00 US C%sT 1946
+ -6:00 Chicago C%sT 1967
+ -6:00 US C%sT
+
+# US Mountain time, represented by Denver
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
+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 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
+
+# US Pacific time, represented by Los Angeles
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule CA 1948 only - Mar 14 2:00 1:00 D
+Rule CA 1949 only - Jan 1 2:00 0 S
+Rule CA 1950 1966 - Apr lastSun 2:00 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 America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00
+ -8:00 US P%sT 1946
+ -8:00 CA P%sT 1967
+ -8:00 US P%sT
-# From Paul Eggert <eggert@twinsun.com> (August 16, 1994):
+# Alaska
+# AK%sT is the modern abbreviation for -9:00 per USNO.
+#
+# From Paul Eggert (1995-12-19):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
# and from east-of-GMT to west-of-GMT days, in 1867 when the US purchased it
-# from Russia. We don't have this data pinned down yet, though.
-
-# Easy stuff first--including Alaska, where we ignore history (since we
-# can't tell if we should give Yukon time or Alaska-Hawaii time for "old"
-# times).
-
+# from Russia. We omit this transition, since we can't represent changes
+# from Julian to Gregorian.
+#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/New_York -5:00 US E%sT
-Zone America/Chicago -6:00 US C%sT
-Zone America/Denver -7:00 US M%sT
-Zone America/Los_Angeles -8:00 US P%sT
-Zone America/Anchorage -9:00 US AK%sT
- # AK%sT is the abbreviation per USNO
+Zone America/Juneau -8:57:41 - LMT 1900 Aug 20 12:00
+ -8:00 - PST 1942
+ -8:00 US P%sT 1946
+ -8:00 - PST 1969
+ -8:00 US P%sT 1983 Oct 30 2:00
+ -9:00 US AK%sT
+Zone America/Yakutat -9:18:55 - LMT 1900 Aug 20 12:00
+ -9:00 - YST 1942
+ -9:00 US Y%sT 1946
+ -9:00 - YST 1969
+ -9:00 US Y%sT 1983 Oct 30 2:00
+ -9:00 US AK%sT
+Zone America/Anchorage -9:59:36 - LMT 1900 Aug 20 12:00
+ -10:00 - CAT 1942
+ -10:00 US CAT/CAWT 1946
+ -10:00 - CAT 1967 Apr
+ -10:00 - AHST 1969
+ -10:00 US AH%sT 1983 Oct 30 2:00
+ -9:00 US AK%sT
+Zone America/Nome -11:01:38 - LMT 1900 Aug 20 12:00
+ -11:00 - NST 1942
+ -11:00 US N%sT 1946
+ -11:00 - NST 1967 Apr
+ -11:00 - BST 1969
+ -11:00 US B%sT 1983 Oct 30 2:00
+ -9:00 US AK%sT
+Zone America/Adak -11:46:38 - LMT 1900 Aug 20 12:00
+ -11:00 - NST 1942
+ -11:00 US N%sT 1946
+ -11:00 - NST 1967 Apr
+ -11:00 - BST 1969
+ -11:00 US B%sT 1983 Oct 30 2:00
+ -10:00 US HA%sT
+# Shanks writes that part of southwest Alaska (e.g. Aniak)
+# switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
+# and another part (e.g. Akiak) made the same switch five weeks later.
+# These switches don't quite make our 1970 cutoff.
+
+# Hawaii
+#
+# From Arthur David Olson:
+# And then there's Hawaii.
+# DST was observed for one day in 1933;
+# standard time was changed by half an hour in 1947;
+# it's always standard as of 1986.
+#
+# From Paul Eggert:
+# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks.
+#
+Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
+ -10:30 - HST 1933 Apr 30 2:00
+ -10:30 1:00 HDT 1933 May 21 2:00
+ -10:30 US H%sT 1947 Jun 8 2:00
+ -10:00 - HST
-# Mainland US areas that are always Standard as of 1986.
+Zone Pacific/Midway -11:49:28 - LMT 1901
+ -11:00 - NST 1967 Apr # N=Nome
+ -11:00 - BST 1983 Nov 30 # B=Bering
+ -11:00 - SST # S=Samoa
-Zone America/Fort_Wayne -5:00 US E%sT 1946
- -5:00 - EST # Always EST as of 1986
-# From Arthur David Olson (October 28, 1991):
-# An article on page A3 of the Sunday, October 27, 1991 Washington Post
-# notes that Starke County switched from Central time to Eastern time as of
-# October 27, 1991.
-Zone America/Knox_IN -6:00 US C%sT 1991 Oct 27 2:00
- -5:00 - EST # Always EST as of 1991
-Zone America/Phoenix -7:00 US M%sT 1946
- -7:00 - MST # Always MST as of 1986
+# Now we turn to US areas that have diverged from the consensus since 1970.
+# Arizona mostly uses MST.
+Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00
+ -7:00 US M%sT 1944 Jan 1 00:01
+ -7:00 - MST 1944 Mar 17 00:01
+ -7:00 US M%sT 1944 Oct 1 00:01
+ -7:00 - MST 1967
+ -7:00 US M%sT 1968
+ -7:00 - MST
# From Arthur David Olson (February 13, 1988):
-# However. . .a writer from the Inter Tribal Council of Arizona, Inc.,
+# A writer from the Inter Tribal Council of Arizona, Inc.,
# notes in private correspondence dated 12/28/87 that "Presently, only the
# Navajo Nation participates in the Daylight Saving Time policy, due to its
# large size and location in three states." (The "only" means that other
# tribal nations don't use DST.)
-Link America/Denver America/Shiprock
-
-# From Bob Devine (January 28, 1988):
-# Michigan didn't observe DST from 1968 to 1973.
+Link America/Denver America/Shiprock
-Zone America/Detroit -5:00 US E%sT 1968
- -5:00 - EST 1973
- -5:00 US E%sT
+# Southern Idaho and eastern Oregon switched four weeks late in 1974.
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00
+ -8:00 US P%sT 1923 May 13 2:00
+ -7:00 US M%sT 1974
+ -7:00 - MST 1974 Feb 3 2:00
+ -7:00 US M%sT
-# Samoa just changes names. No DST, per Naval Observatory.
+# Indiana
#
-# Howse writes that in 1879 the King of Samoa decided to change
-# ``the date in his kingdom from the Antipodean to the American system,
-# ordaining -- by a masterpiece of diplomatic flattery -- that
-# the Fourth of July should be celebrated twice in that year.''
-
-Zone Pacific/Samoa 12:37:12 - LMT 1879 Jul 5
- -11:22:48 - LMT 1911
- -11:30 - SST 1950
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
- -11:00 - SST # S=Samoa
-
-Zone Pacific/Midway -11:49:28 - LMT 1901
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
- -11:00 - SST # S=Samoa
-
-# Aleutian has a name change. DST, per Naval Observatory.
-
-Zone America/Atka -10:00 US AH%sT 1983 Nov 30
- -10:00 US HA%sT
+# From Paul Eggert (1995-12-19):
+# Indiana generally observes either EST all year, or CST/CDT,
+# but areas near Cincinnati and Louisville use those cities' timekeeping
+# and in 1969 and 1970 the whole state observed daylight time;
+# and there are other exceptions as noted below.
+# Shanks partitions Indiana into 345 regions, each with its own time history,
+# and writes ``Even newspaper reports present contradictory information.''
+# Fortunately, most of the complexity occurred before our cutoff date of 1970.
+#
+# Since 1970, EST-only Indiana has been like America/Indianapolis,
+# with exceptions noted below for Crawford, Starke, and Switzerland counties.
+# The parts of Indiana not listed below have been like America/Chicago,
+# America/Louisville, or America/New_York.
+#
+# Other than Indianapolis, the Indiana place names are so nondescript
+# that they would be ambiguous if we left them at the `America' level.
+# So we reluctantly put them all in a subdirectory `America/Indiana'.
+#
+# Most of EST-only Indiana last observed DST in 1970.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+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 America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1920
+ -6:00 Indianapolis C%sT 1942
+ -6:00 US C%sT 1946
+ -6:00 Indianapolis C%sT 1955 Apr 24 2:00
+ -5:00 - EST 1957 Sep 29 2:00
+ -6:00 - CST 1958 Apr 27 2:00
+ -5:00 - EST 1969
+ -5:00 US E%sT 1971
+ -5:00 - EST
+Link America/Indianapolis America/Indiana/Indianapolis
+#
+# Part of Crawford County, Indiana, last observed DST in 1975,
+# and left its clocks alone in 1974.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+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 America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1951
+ -6:00 Marengo C%sT 1961 Apr 30 2:00
+ -5:00 - EST 1969
+ -5:00 US E%sT 1974 Jan 6 2:00
+ -6:00 1:00 CDT 1974 Oct 27 2:00
+ -5:00 US E%sT 1976
+ -5:00 - EST
+#
+# Starke County, Indiana
+# From Arthur David Olson (October 28, 1991):
+# An article on page A3 of the Sunday, October 27, 1991 Washington Post
+# notes that Starke County switched from Central time to Eastern time as of
+# October 27, 1991.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
+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 America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1947
+ -6:00 Starke C%sT 1962 Apr 29 2:00
+ -5:00 - EST 1963 Oct 27 2:00
+ -6:00 US C%sT 1991 Oct 27 2:00
+ -5:00 - EST
+#
+# Switzerland County, Indiana, last observed DST in 1972.
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1954 Apr 25 2:00
+ -5:00 - EST 1969
+ -5:00 US E%sT 1973
+ -5:00 - EST
-# From Arthur David Olson:
-# And then there's Hawaii.
-# DST was observed for one day in 1933;
-# Standard time was change by half an hour in 1947;
-# it's always standard as of 1986.
+# Part of Kentucky left its clocks alone in 1974.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule Louisville 1921 only - May 1 2:00 1:00 D
+Rule Louisville 1921 only - Sep 1 2:00 0 S
+Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
+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 America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00
+ -6:00 US C%sT 1921
+ -6:00 Louisville C%sT 1942
+ -6:00 US C%sT 1946
+ -6:00 Louisville C%sT 1961 Jul 23 2:00
+ -5:00 - EST 1968
+ -5:00 US E%sT 1974 Jan 6 2:00
+ -6:00 1:00 CDT 1974 Oct 27 2:00
+ -5:00 US E%sT
-Zone Pacific/Honolulu -10:30 US H%sT 1933 Apr 30 2:00
- -10:30 1:00 HDT 1933 May 1 2:00
- -10:30 US H%sT 1947 Jun 8 2:00
- -10:00 - HST
+# Michigan
+#
+# From Bob Devine (January 28, 1988):
+# Michigan didn't observe DST from 1968 to 1973.
+#
+# From Paul Eggert (1995-12-19):
+# Shanks writes that Michigan started using standard time on 1885 Sep 18,
+# but Howse (p 126) writes that Detroit kept
+#
+# local time until 1900 when the City Council decreed that clocks should
+# be put back twenty-eight minutes to Central Standard Time. Half the
+# city obeyed, half refused. After considerable debate, the decision
+# was rescinded and the city reverted to Sun time. A derisive offer to
+# erect a sundial in front of the city hall was referred to the
+# Committee on Sewers. Then, in 1905, Central time was adopted
+# by city vote.
+#
+# This story is too entertaining to be false, so go with Howse over Shanks.
+#
+# Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
+# 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
+Rule Detroit 1967 only - Jun 14 2:00 1:00 D
+Rule Detroit 1967 only - Oct lastSun 2:00 0 S
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Detroit -5:32:11 - LMT 1905
+ -6:00 - CST 1915 May 15 2:00
+ -5:00 - EST 1942
+ -5:00 US E%sT 1946
+ -5:00 Detroit E%sT 1973
+ -5:00 US E%sT 1975
+ -5:00 - EST 1975 Apr 27 2:00
+ -5:00 US E%sT
+#
+# The Michigan border with Wisconsin switched from EST to CST/CDT in 1973.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+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 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
+ -5:00 - EST 1973 Apr 29 2:00
+ -6:00 US C%sT
# Navassa
-# no information; probably like America/New_York
+# uninhabited
# Old names, for S5 users
@@ -203,7 +437,7 @@ Link America/New_York EST5EDT
Link America/Chicago CST6CDT
Link America/Denver MST7MDT
Link America/Los_Angeles PST8PDT
-Link America/Fort_Wayne EST
+Link America/Indianapolis EST
Link America/Phoenix MST
Link Pacific/Honolulu HST
@@ -211,7 +445,7 @@ Link Pacific/Honolulu HST
# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
-# A good source for time zone historical data outside the U.S. is
+# A good source for time zone historical data outside the US is
# Thomas G. Shanks, The International Atlas (3rd edition),
# San Diego: ACS Publications, Inc. (1991).
# Except where otherwise noted, it is the source for the data below.
@@ -369,7 +603,7 @@ Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D
Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S
Rule StJohns 1960 max - Oct lastSun 2:00 0 S
Rule StJohns 1987 only - Apr Sun>=1 2:00 1:00 D
-Rule StJohns 1988 only - Apr Sun>=1 2:00 2:00 D
+Rule StJohns 1988 only - Apr Sun>=1 2:00 2:00 DD
Rule StJohns 1989 max - Apr Sun>=1 2:00 1:00 D
# St John's has an apostrophe, but Posix file names can't have apostrophes.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -572,7 +806,7 @@ Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
# Rules prior to 1987 are unknown.
# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
# observe DST." This is presumably Baja California Norte, above 28th parallel,
-# as listed there; Mexico/BajaSur is for "Baja California Sur and N. Pacific
+# as listed there; [there is also] "Baja California Sur and N. Pacific
# Coast (States of Sinaloa and Sonora)."
# From Bob Devine (January 28, 1988):
@@ -730,7 +964,7 @@ Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
-5:00 - EST
# Clipperton
-# no information
+# uninhabited
# Costa Rica
# Shanks gives some very odd dates for 1991, and stops there.
@@ -913,9 +1147,9 @@ Zone America/Panama -5:18:08 - LMT 1890
# Puerto Rico
# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Puerto_Rico -4:24:28 - LMT 1899 Mar 28 12:00 # San Juan
+Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
-4:00 - AST 1942 May 3
- -4:00 1:00 ADT 1945 Sep 30 2:00
+ -4:00 1:00 AWT 1945 Sep 30 2:00
-4:00 - AST
# St Kitts-Nevis
@@ -949,7 +1183,12 @@ Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:00 - EST 1979 Apr 29 2:00
-5:00 US E%sT
-# Virgin Is (British and US)
+# British Virgin Is
+# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
+ -4:00 - AST
+
+# Virgin Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Virgin -4:19:44 - LMT 1911 Jul # Charlotte Amalie
+Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
-4:00 - AST