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1# @(#)northamerica 7.32
1# @(#)northamerica 7.41
2# also includes Central America and the Caribbean
3
4# This data is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@elsie.nci.nih.gov for general use in the future).
7
8# From Paul Eggert <eggert@twinsun.com> (1994-08-17):
9# A reliable and entertaining source about time zones is

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257# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks.
258#
259Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
260 -10:30 - HST 1933 Apr 30 2:00
261 -10:30 1:00 HDT 1933 May 21 2:00
262 -10:30 US H%sT 1947 Jun 8 2:00
263 -10:00 - HST
264
2# also includes Central America and the Caribbean
3
4# This data is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@elsie.nci.nih.gov for general use in the future).
7
8# From Paul Eggert <eggert@twinsun.com> (1994-08-17):
9# A reliable and entertaining source about time zones is

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257# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks.
258#
259Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
260 -10:30 - HST 1933 Apr 30 2:00
261 -10:30 1:00 HDT 1933 May 21 2:00
262 -10:30 US H%sT 1947 Jun 8 2:00
263 -10:00 - HST
264
265Zone Pacific/Midway -11:49:28 - LMT 1901
266 -11:00 - NST 1967 Apr # N=Nome
267 -11:00 - BST 1983 Nov 30 # B=Bering
268 -11:00 - SST # S=Samoa
269
270# Now we turn to US areas that have diverged from the consensus since 1970.
271
272# Arizona mostly uses MST.
273Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00
274 -7:00 US M%sT 1944 Jan 1 00:01
275 -7:00 - MST 1944 Mar 17 00:01
276 -7:00 US M%sT 1944 Oct 1 00:01
277 -7:00 - MST 1967

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459Link America/Phoenix MST
460Link Pacific/Honolulu HST
461
462################################################################################
463
464
465# From Paul Eggert <eggert@twinsun.com> (1996-11-22):
466# A good source for time zone historical data outside the US is
265# Now we turn to US areas that have diverged from the consensus since 1970.
266
267# Arizona mostly uses MST.
268Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00
269 -7:00 US M%sT 1944 Jan 1 00:01
270 -7:00 - MST 1944 Mar 17 00:01
271 -7:00 US M%sT 1944 Oct 1 00:01
272 -7:00 - MST 1967

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454Link America/Phoenix MST
455Link Pacific/Honolulu HST
456
457################################################################################
458
459
460# From Paul Eggert <eggert@twinsun.com> (1996-11-22):
461# A good source for time zone historical data outside the US is
467# Thomas G. Shanks, The International Atlas (3rd edition),
468# San Diego: ACS Publications, Inc. (1991).
462# Thomas G. Shanks, The International Atlas (4th edition),
463# San Diego: ACS Publications, Inc. (1995).
469#
470# Gwillim Law <LAW@encmail.encompass.com> writes that a good source
471# for recent time zone data is the International Air Transport
472# Association's Standard Schedules Information Manual (IATA SSIM),
473# published semiannually. Law sent in several helpful summaries
474# of the IATA's data after 1990.
475#
476# Except where otherwise noted, Shanks is the source for entries through 1990,
477# and IATA SSIM is the source for entries after 1990.
478#
479# Another source occasionally used is Edward W. Whitman, World Time Differences,
480# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
481# I found in the UCLA library.
482#
483# See the `europe' file for Greenland.
464#
465# Gwillim Law <LAW@encmail.encompass.com> writes that a good source
466# for recent time zone data is the International Air Transport
467# Association's Standard Schedules Information Manual (IATA SSIM),
468# published semiannually. Law sent in several helpful summaries
469# of the IATA's data after 1990.
470#
471# Except where otherwise noted, Shanks is the source for entries through 1990,
472# and IATA SSIM is the source for entries after 1990.
473#
474# Another source occasionally used is Edward W. Whitman, World Time Differences,
475# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
476# I found in the UCLA library.
477#
478# See the `europe' file for Greenland.
484#
485# See the `africa' file for time zone naming and abbreviation conventions.
486
487# Canada
488
489# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
490# I post here the time zone abbreviations standardized in Canada
491# for both English and French in the CAN/CSA-Z234.4-89 standard....
492#
493# UTC Standard time Daylight savings time

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648
649# From Paul Eggert (1996-06-12):
650# Shanks writes that since 1970 most of this region has been like Montreal.
651# Thunder Bay skipped DST in 1973.
652# Many smaller locales did not observe peacetime DST until 1974;
653# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
654# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
655
479
480# Canada
481
482# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
483# I post here the time zone abbreviations standardized in Canada
484# for both English and French in the CAN/CSA-Z234.4-89 standard....
485#
486# UTC Standard time Daylight savings time

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641
642# From Paul Eggert (1996-06-12):
643# Shanks writes that since 1970 most of this region has been like Montreal.
644# Thunder Bay skipped DST in 1973.
645# Many smaller locales did not observe peacetime DST until 1974;
646# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
647# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
648
649# From Paul Eggert (1997-10-17):
650# msb@sq.com writes that an article in the 1997-10-14 Toronto Star
651# says that Atikokan, Ontario currently does not observe DST,
652# but will vote on 11-10 whether to use EST/EDT.
653# He also writes that the
654# <a href="http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html">
655# Ontario Time Act (1990, Chapter T.9)
656# </a>
657# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
658# Officially Atikokan is therefore on CST/CDT, and most likely this report
659# concerns a non-official time observed as a matter of local practice.
660# For what it's worth, Shanks (1995) says that Atikokan has agreed with
661# Rainy River ever since standard time was introduced.
662
656# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
657Rule Mont 1917 only - Mar 25 2:00 1:00 D
658Rule Mont 1917 only - Apr 24 0:00 0 S
659Rule Mont 1918 only - Apr 14 2:00 1:00 D
660Rule Mont 1918 only - Oct 31 2:00 0 S
661Rule Mont 1919 only - Mar 31 2:30 1:00 D
662Rule Mont 1919 only - Oct 25 2:30 0 S
663Rule Mont 1920 only - May 2 2:30 1:00 D

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890
891
892###############################################################################
893
894# Mexico
895
896# From Guy Harris:
897# Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
663# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
664Rule Mont 1917 only - Mar 25 2:00 1:00 D
665Rule Mont 1917 only - Apr 24 0:00 0 S
666Rule Mont 1918 only - Apr 14 2:00 1:00 D
667Rule Mont 1918 only - Oct 31 2:00 0 S
668Rule Mont 1919 only - Mar 31 2:30 1:00 D
669Rule Mont 1919 only - Oct 25 2:30 0 S
670Rule Mont 1920 only - May 2 2:30 1:00 D

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897
898
899###############################################################################
900
901# Mexico
902
903# From Guy Harris:
904# Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
898# Rules prior to 1987 are unknown.
905# Rules [before] 1987 are unknown.
899# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
900# observe DST." This is presumably Baja California Norte, above 28th parallel,
901# as listed there; [there is also] "Baja California Sur and N. Pacific
902# Coast (States of Sinaloa and Sonora)."
903
904# From Bob Devine (1988-01-28):
905# The Federal District (where Mexico City is) has observed [DST] several
906# times but not recently.

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968# BajaNorte: GMT+8
969# BajaSur: GMT+7
970# General: GMT+6
971#
972# The Decree was published in Mexico's Official Newspaper on January 4th.
973#
974# -------------- End Forwarded Message --------------
975# From Paul Eggert (1996-06-12):
906# The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
907# observe DST." This is presumably Baja California Norte, above 28th parallel,
908# as listed there; [there is also] "Baja California Sur and N. Pacific
909# Coast (States of Sinaloa and Sonora)."
910
911# From Bob Devine (1988-01-28):
912# The Federal District (where Mexico City is) has observed [DST] several
913# times but not recently.

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975# BajaNorte: GMT+8
976# BajaSur: GMT+7
977# General: GMT+6
978#
979# The Decree was published in Mexico's Official Newspaper on January 4th.
980#
981# -------------- End Forwarded Message --------------
982# From Paul Eggert (1996-06-12):
976# For an English translation of the decree,
977# see ``Diario Oficial: Time Zone Changeover'',
978# <URL:http://mexico-travel.com/extra/timezone_eng.html> (1996-01-04).
983# For an English translation of the decree, see
984# <a href="http://mexico-travel.com/extra/timezone_eng.html">
985# ``Diario Oficial: Time Zone Changeover'' (1996-01-04).
986# </a>
979
980# From Shanks (1991):
981# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
982Rule Mexico 1939 only - Feb 5 0:00 1:00 D
983Rule Mexico 1939 only - Jun 25 0:00 0 S
984Rule Mexico 1940 only - Dec 9 0:00 1:00 D
985Rule Mexico 1941 only - Apr 1 0:00 0 S
986Rule Mexico 1943 only - Dec 16 0:00 1:00 D
987Rule Mexico 1944 only - May 1 0:00 0 S
988Rule Mexico 1950 only - Feb 12 0:00 1:00 D
989Rule Mexico 1950 only - Jul 30 0:00 0 S
990Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D
991Rule Mexico 1996 max - Oct lastSun 2:00 0 S
992#
993Rule BajaN 1950 1966 - Apr lastSun 2:00 1:00 D
994Rule BajaN 1950 1961 - Sep lastSun 2:00 0 S
995Rule BajaN 1961 1966 - Oct lastSun 2:00 0 S
996# Zone NAME GMTOFF RULES FORMAT [UNTIL]
987
988# From Shanks (1991):
989# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
990Rule Mexico 1939 only - Feb 5 0:00 1:00 D
991Rule Mexico 1939 only - Jun 25 0:00 0 S
992Rule Mexico 1940 only - Dec 9 0:00 1:00 D
993Rule Mexico 1941 only - Apr 1 0:00 0 S
994Rule Mexico 1943 only - Dec 16 0:00 1:00 D
995Rule Mexico 1944 only - May 1 0:00 0 S
996Rule Mexico 1950 only - Feb 12 0:00 1:00 D
997Rule Mexico 1950 only - Jul 30 0:00 0 S
998Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D
999Rule Mexico 1996 max - Oct lastSun 2:00 0 S
1000#
1001Rule BajaN 1950 1966 - Apr lastSun 2:00 1:00 D
1002Rule BajaN 1950 1961 - Sep lastSun 2:00 0 S
1003Rule BajaN 1961 1966 - Oct lastSun 2:00 0 S
1004# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1005# Quintana Roo
1006Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 1:12:42
1007 -6:00 - CST 1996
1008 -6:00 Mexico C%sT 1997 Oct lastSun 2:00
1009 -5:00 Mexico E%sT
1010# Central Mexico
997Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
998 -7:00 - MST 1927 Jun 10 23:00
999 -6:00 - CST 1930 Nov 15
1000 -7:00 - MST 1931 May 1 23:00
1001 -6:00 - CST 1931 Oct
1002 -7:00 - MST 1932 Mar 30 23:00
1003 -6:00 Mexico C%sT
1011Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
1012 -7:00 - MST 1927 Jun 10 23:00
1013 -6:00 - CST 1930 Nov 15
1014 -7:00 - MST 1931 May 1 23:00
1015 -6:00 - CST 1931 Oct
1016 -7:00 - MST 1932 Mar 30 23:00
1017 -6:00 Mexico C%sT
1018# Chihuahua
1019Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:44
1020 -7:00 - MST 1927 Jun 10 23:00
1021 -6:00 - CST 1930 Nov 15
1022 -7:00 - MST 1931 May 1 23:00
1023 -6:00 - CST 1931 Oct
1024 -7:00 - MST 1932 Mar 30 23:00
1025 -6:00 - CST 1996
1026 -6:00 Mexico C%sT 1998
1027 -6:00 - CST 1998 Apr Sun>=1 3:00
1028 -7:00 Mexico M%sT
1029# S Baja California, Nayarit, Sinaloa, Sonora
1004Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
1005 -7:00 - MST 1927 Jun 10 23:00
1006 -6:00 - CST 1930 Nov 15
1007 -7:00 - MST 1931 May 1 23:00
1008 -6:00 - CST 1931 Oct
1009 -7:00 - MST 1932 Mar 30 23:00
1010 -6:00 - CST 1942 Apr
1011 -7:00 - MST 1949 Jan 14
1012 -8:00 - PST 1970
1013 -7:00 Mexico M%sT
1030Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
1031 -7:00 - MST 1927 Jun 10 23:00
1032 -6:00 - CST 1930 Nov 15
1033 -7:00 - MST 1931 May 1 23:00
1034 -6:00 - CST 1931 Oct
1035 -7:00 - MST 1932 Mar 30 23:00
1036 -6:00 - CST 1942 Apr
1037 -7:00 - MST 1949 Jan 14
1038 -8:00 - PST 1970
1039 -7:00 Mexico M%sT
1040# N Baja California
1014Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
1015 -8:00 - PST 1927 Jun 10 23:00
1016 -7:00 - MST 1930 Nov 16
1017 -8:00 - PST 1942 Apr
1018 -7:00 - MST 1949 Jan 14
1019 -8:00 BajaN P%sT 1967 Apr lastSun 2:00
1020 -8:00 US P%sT 1996
1021 -8:00 Mexico P%sT
1041Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
1042 -8:00 - PST 1927 Jun 10 23:00
1043 -7:00 - MST 1930 Nov 16
1044 -8:00 - PST 1942 Apr
1045 -7:00 - MST 1949 Jan 14
1046 -8:00 BajaN P%sT 1967 Apr lastSun 2:00
1047 -8:00 US P%sT 1996
1048 -8:00 Mexico P%sT
1049# Baja California
1022Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
1023 -8:00 - PST 1927 Jun 10 23:00
1024 -7:00 - MST 1930 Nov 16
1025 -8:00 - PST 1942 Apr
1026 -7:00 - MST 1949 Jan 14
1027 -8:00 - PST 1996
1028 -8:00 Mexico P%sT
1029#

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1056# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1057Rule Barb 1977 only - Jun 12 2:00 1:00 D
1058Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
1059Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
1060Rule Barb 1979 only - Sep 30 2:00 0 S
1061Rule Barb 1980 only - Sep 25 2:00 0 S
1062# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1063Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
1050Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
1051 -8:00 - PST 1927 Jun 10 23:00
1052 -7:00 - MST 1930 Nov 16
1053 -8:00 - PST 1942 Apr
1054 -7:00 - MST 1949 Jan 14
1055 -8:00 - PST 1996
1056 -8:00 Mexico P%sT
1057#

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1084# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1085Rule Barb 1977 only - Jun 12 2:00 1:00 D
1086Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
1087Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
1088Rule Barb 1979 only - Sep 30 2:00 0 S
1089Rule Barb 1980 only - Sep 25 2:00 0 S
1090# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1091Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
1064 -3:58 - BMT 1932 # Bridgetown Mean Time
1092 -3:58:28 - BMT 1932 # Bridgetown Mean Time
1065 -4:00 Barb A%sT
1066
1067# Belize
1068# Whitman entirely disagrees with Shanks; go with Shanks.
1069# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1070Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
1071Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
1072Rule Belize 1973 only - Dec 5 0:00 1:00 D

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1081# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1082Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
1083 -4:00 - AST 1974 Apr 28 2:00
1084 -4:00 Bahamas A%sT
1085
1086# Cayman Is
1087# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1088Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
1093 -4:00 Barb A%sT
1094
1095# Belize
1096# Whitman entirely disagrees with Shanks; go with Shanks.
1097# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1098Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
1099Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
1100Rule Belize 1973 only - Dec 5 0:00 1:00 D

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1109# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1110Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
1111 -4:00 - AST 1974 Apr 28 2:00
1112 -4:00 Bahamas A%sT
1113
1114# Cayman Is
1115# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1116Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
1089 -5:07 - KMT 1912 Feb # Kingston Mean Time
1117 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
1090 -5:00 - EST
1091
1118 -5:00 - EST
1119
1092# Clipperton
1093# uninhabited
1094
1095# Costa Rica
1096# Shanks gives some very odd dates for 1991, and stops there.
1097# For now, we won't guess further.
1098# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1099Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
1100Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
1101Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
1102# IATA SSIM (1991-09) says the following was at 1:00; go with Shanks.

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1140Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
1141Rule Cuba 1972 1974 - Oct 8 0:00 0 S
1142Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
1143Rule Cuba 1978 only - May 7 0:00 1:00 D
1144Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
1145Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
1146Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
1147Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
1120# Costa Rica
1121# Shanks gives some very odd dates for 1991, and stops there.
1122# For now, we won't guess further.
1123# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1124Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
1125Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
1126Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
1127# IATA SSIM (1991-09) says the following was at 1:00; go with Shanks.

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1165Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
1166Rule Cuba 1972 1974 - Oct 8 0:00 0 S
1167Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
1168Rule Cuba 1978 only - May 7 0:00 1:00 D
1169Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
1170Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
1171Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
1172Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
1148Rule Cuba 1990 max - Apr Sun>=1 0:00 1:00 D
1173Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D
1149Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
1174Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
1150Rule Cuba 1996 only - Oct Sun>=1 0:00s 0 S
1151Rule Cuba 1997 max - Oct Sun>=8 0:00s 0 S
1175Rule Cuba 1996 only - Oct 6 0:00s 0 S
1176Rule Cuba 1997 only - Oct 12 0:00s 0 S
1177Rule Cuba 1998 only - Mar 29 0:00 1:00 D
1178Rule Cuba 1998 max - Oct lastSun 0:00s 0 S
1179Rule Cuba 1999 max - Apr Sun>=1 0:00s 1:00 D
1152
1153# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1154Zone America/Havana -5:29:28 - LMT 1890
1155 -5:30 - HMT 1925 Jul 19 12:00 # Havana MT
1156 -5:00 Cuba C%sT
1157
1158# Dominica
1159# Zone NAME GMTOFF RULES FORMAT [UNTIL]

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1206 -6:00 Guat C%sT
1207
1208# Haiti
1209# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1210Rule Haiti 1983 only - May 8 0:00 1:00 D
1211Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
1212Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
1213# Shanks says AT is 2:00, but IATA SSIM (1991/1996) says 1:00s. Go with IATA.
1180
1181# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1182Zone America/Havana -5:29:28 - LMT 1890
1183 -5:30 - HMT 1925 Jul 19 12:00 # Havana MT
1184 -5:00 Cuba C%sT
1185
1186# Dominica
1187# Zone NAME GMTOFF RULES FORMAT [UNTIL]

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1234 -6:00 Guat C%sT
1235
1236# Haiti
1237# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1238Rule Haiti 1983 only - May 8 0:00 1:00 D
1239Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
1240Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
1241# Shanks says AT is 2:00, but IATA SSIM (1991/1996) says 1:00s. Go with IATA.
1214Rule Haiti 1988 max - Apr Sun>=1 1:00s 1:00 D
1215Rule Haiti 1988 max - Oct lastSun 1:00s 0 S
1242Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
1243Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
1216# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1217Zone America/Port-au-Prince -4:49:20 - LMT 1890
1218 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
1219 -5:00 Haiti E%sT
1220
1221# Honduras
1222# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1.
1223# Zone NAME GMTOFF RULES FORMAT [UNTIL]

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1230# Follows US rules.
1231
1232# From U. S. Naval Observatory (1989-01-19):
1233# JAMAICA 5 H BEHIND UTC
1234
1235# From Shanks (1991):
1236# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1237Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston
1244# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1245Zone America/Port-au-Prince -4:49:20 - LMT 1890
1246 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
1247 -5:00 Haiti E%sT
1248
1249# Honduras
1250# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1.
1251# Zone NAME GMTOFF RULES FORMAT [UNTIL]

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1258# Follows US rules.
1259
1260# From U. S. Naval Observatory (1989-01-19):
1261# JAMAICA 5 H BEHIND UTC
1262
1263# From Shanks (1991):
1264# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1265Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston
1238 -5:07 - KMT 1912 Feb # Kingston Mean Time
1266 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
1239 -5:00 - EST 1974 Jan 6 2:00
1240 -5:00 US E%sT 1984
1241 -5:00 - EST
1242
1243# Martinique
1244# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1245Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
1246 -4:04 - FFMT 1911 May # Fort-de-France MT

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1300# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1301Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
1302 -4:00 - AST 1980 May
1303 -3:00 Mont PM%sT # Pierre & Miquelon Time
1304
1305# St Vincent and the Grenadines
1306# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1307Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
1267 -5:00 - EST 1974 Jan 6 2:00
1268 -5:00 US E%sT 1984
1269 -5:00 - EST
1270
1271# Martinique
1272# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1273Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
1274 -4:04 - FFMT 1911 May # Fort-de-France MT

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1328# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1329Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
1330 -4:00 - AST 1980 May
1331 -3:00 Mont PM%sT # Pierre & Miquelon Time
1332
1333# St Vincent and the Grenadines
1334# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1335Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
1308 -4:05 - KMT 1912 # Kingstown Mean Time
1336 -4:04:56 - KMT 1912 # Kingstown Mean Time
1309 -4:00 - AST
1310
1311# Turks and Caicos
1337 -4:00 - AST
1338
1339# Turks and Caicos
1312# From Paul Eggert (1996-11-22):
1313# Shanks says they use US DST rules, but IATA SSIM (1991/1996)
1340# From Paul Eggert (1998-08-06):
1341# Shanks says they use US DST rules, but IATA SSIM (1991/1998)
1314# says they switch at midnight. Go with IATA SSIM.
1315# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1316Rule TC 1979 1986 - Apr lastSun 0:00 1:00 D
1317Rule TC 1979 max - Oct lastSun 0:00 0 S
1318Rule TC 1987 max - Apr Sun>=1 0:00 1:00 D
1319# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1320Zone America/Grand_Turk -4:44:32 - LMT 1890
1342# says they switch at midnight. Go with IATA SSIM.
1343# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1344Rule TC 1979 1986 - Apr lastSun 0:00 1:00 D
1345Rule TC 1979 max - Oct lastSun 0:00 0 S
1346Rule TC 1987 max - Apr Sun>=1 0:00 1:00 D
1347# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1348Zone America/Grand_Turk -4:44:32 - LMT 1890
1321 -5:07 - KMT 1912 Feb # Kingston Mean Time
1349 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
1322 -5:00 TC E%sT
1323
1324# British Virgin Is
1325# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1326Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
1327 -4:00 - AST
1328
1329# Virgin Is
1330# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1331Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
1332 -4:00 - AST
1350 -5:00 TC E%sT
1351
1352# British Virgin Is
1353# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1354Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
1355 -4:00 - AST
1356
1357# Virgin Is
1358# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1359Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
1360 -4:00 - AST