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+# @(#)northamerica	7.12
+# also includes Central America and the Caribbean
+
+# This data is by no means authoritative; if you think you know better,
+# go ahead and edit the file (and please send any changes to
+# tz@elsie.nci.nih.gov for general use in the future).
+
+# From Paul Eggert <eggert@twinsun.com> (August 17, 1994):
+# A reliable and entertaining source about time zones is
+# Derek Howse, Greenwich time and the discovery of the longitude,
+# Oxford University Press (1980).
+
+###############################################################################
+
+# United States
+
+# 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	-	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
+Rule	US	1967	max	-	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	1976	1986	-	Apr	lastSun	2:00	1:00	D
+Rule	US	1987	max	-	Apr	Sun>=1	2:00	1:00	D
+
+# From Bob Devine (January 28, 1988):
+# ...Alaska (and Hawaii) had the timezone names changed in 1967.
+#    old			 new
+#    Pacific Standard Time(PST)  -same-
+#    Yukon Standard Time(YST)    -same-
+#    Central Alaska S.T. (CAT)   Alaska-Hawaii St[an]dard Time (AHST)
+#    Nome Standard Time (NT)     Bering Standard Time (BST)
+#
+# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
+#    The YST zone now covers nearly all of the state, AHST just part
+#    of the Aleutian islands.   No DST.
+
+# 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
+# USA  CENTRAL       6 H  BEHIND UTC    CHICAGO, HOUSTON
+# USA  CENTRAL       5 H  BEHIND UTC    APR 3 - OCT 30
+# USA  MOUNTAIN      7 H  BEHIND UTC    DENVER
+# USA  MOUNTAIN      6 H  BEHIND UTC    APR 3 - OCT 30
+# USA  PACIFIC       8 H  BEHIND UTC    L.A., SAN FRANCISCO
+# USA  PACIFIC       7 H  BEHIND UTC    APR 3 - OCT 30
+# USA  ALASKA STD    9 H  BEHIND UTC    MOST OF ALASKA     (AKST)
+# USA  ALASKA STD    8 H  BEHIND UTC    APR 3 - OCT 30 (AKDT)
+# USA  ALEUTIAN     10 H  BEHIND UTC    ISLANDS WEST OF 170W
+# USA  - " -         9 H  BEHIND UTC    APR 3 - OCT 30
+# USA  HAWAII       10 H  BEHIND UTC
+# USA  BERING       11 H  BEHIND UTC    SAMOA, MIDWAY
+
+# From Arthur David Olson (January 21, 1989):
+# The above dates are for 1988.
+# Note the "AKST" and "AKDT" abbreviations, the claim that there's
+# no DST in Samoa, and the claim that there is DST in Alaska and the
+# Aleutians.
+
+# From Arthur David Olson (February 13, 1988):
+# Legal standard time zone names, from United States Code (1982 Edition and
+# Supplement III), Title 15, Chapter 6, Section 260 and forward.  First, names
+# up to April 1, 1967 (when most provisions of the Uniform Time Act of 1966
+# took effect), as explained in sections 263 and 261:
+#	(none)
+#	United States standard eastern time
+#	United States standard mountain time
+#	United States standard central time
+#	United States standard Pacific time
+#	(none)
+#	United States standard Alaska time
+#	(none)
+# Next, names from April 1, 1967 until November 30, 1983 (the date for
+# public law 98-181):
+#	Atlantic standard time
+#	eastern standard time
+#	central standard time
+#	mountain standard time
+#	Pacific standard time
+#	Yukon standard time
+#	Alaska-Hawaii standard time
+#	Bering standard time
+# And after November 30, 1983:
+#	Atlantic standard time
+#	eastern standard time
+#	central standard time
+#	mountain standard time
+#	Pacific standard time
+#	Alaska standard time
+#	Hawaii-Aleutian standard time
+#	Samoa standard time
+# The law doesn't give abbreviations.
+
+# From Paul Eggert <eggert@twinsun.com> (August 16, 1994):
+# 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).
+
+# 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
+
+# Mainland US areas that are always Standard as of 1986.
+
+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
+
+# From Arthur David Olson (February 13, 1988):
+# However. . .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 Navajo
+
+# From Bob Devine (January 28, 1988):
+# Michigan didn't observe DST from 1968 to 1973.
+
+Zone America/Detroit	-5:00	US	E%sT	1968
+			-5:00	-	EST	1973
+			-5:00	US	E%sT
+
+# Samoa just changes names.  No DST, per Naval Observatory.
+#
+# 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 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.
+
+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
+
+# Navassa
+# no information; probably like US/Eastern
+
+
+# Old names, for S5 users
+
+# Link	LINK-FROM		LINK-TO
+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/Phoenix		MST
+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
+# 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.
+#
+# Another source occasionally used is Edward W. Whitman, World Time Differences,
+# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
+# I found in the UCLA library.
+#
+# I invented the abbreviation SPST for St Pierre Standard Time; SPDT likewise.
+# Corrections are welcome!
+#
+# See the `europe' file for Greenland.
+#
+# 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....
+#
+#	UTC	Standard time	Daylight savings time
+#	offset	French	English	French	English
+#	-2:30	-	-	HAT	NDT
+#	-3	-	-	HAA	ADT
+#	-3:30	HNT	NST	-	-
+#	-4	HNA	AST	HAE	EDT
+#	-5	HNE	EST	HAC	CDT
+#	-6	HNC	CST	HAR	MDT
+#	-7	HNR	MST	HAP	PDT
+#	-8	HNP	PST	HAY	YDT
+#	-9	HNY	YST	-	-
+#
+#	HN: Heure Normale	ST: Standard Time
+#	HA: Heure Avanc<e'>e	DT: Daylight saving Time
+#
+#	A: de l'Atlantique	Atlantic
+#	C: du Centre		Central
+#	E: de l'Est		Eastern
+#	M:			Mountain
+#	N:			Newfoundland
+#	P: du Pacifique		Pacific
+#	R: des Rocheuses
+#	T: de Terre-Neuve
+#	Y: du Yukon		Yukon
+#
+# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
+# Alas, this sort of thing must be handled by localization software.
+
+
+
+# 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	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
+# Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks.
+Rule	StJohns	1919	only	-	May	 5	23:00	1:00	D
+Rule	StJohns	1919	only	-	Aug	12	23:00	0	S
+# For 1931-1935 Whitman gives Apr same date; go with Shanks.
+Rule	StJohns	1920	1935	-	May	Sun>=1	23:00	1:00	D
+Rule	StJohns	1920	1935	-	Oct	lastSun	23:00	0	S
+# For 1936-1941 Shanks gives May Mon>=9 and Oct Mon>=2; go with Whitman.
+Rule	StJohns	1936	1941	-	May	Sun>=8	0:00	1:00	D
+Rule	StJohns	1936	1941	-	Oct	Sun>=1	0:00	0	S
+# Shanks gives 1942 May 11 - 1945 Sep 30; go with Whitman.
+Rule	StJohns	1942	only	-	Mar	 1	0:00	1:00	D
+Rule	StJohns	1942	only	-	Dec	31	0:00	0	S
+Rule	StJohns	1943	only	-	May	30	0:00	1:00	D
+Rule	StJohns	1943	only	-	Sep	 5	0:00	0	S
+Rule	StJohns	1944	only	-	Jul	10	0:00	1:00	D
+Rule	StJohns	1944	only	-	Sep	 2	0:00	0	S
+Rule	StJohns	1945	only	-	Jan	 1	0:00	1:00	D
+Rule	StJohns	1945	only	-	Oct	 7	2:00	0	S
+# For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives
+# Apr 30 - Sep 24; go with Shanks.
+Rule	StJohns	1946	1950	-	May	Sun>=8	2:00	1:00	D
+Rule	StJohns	1946	1950	-	Oct	Sun>=2	2:00	0	S
+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	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]
+Zone America/St_Johns	-3:30:52 -	LMT	1884
+			-3:31	StJohns	N%sT	1935 Mar 30
+			-3:30	StJohns	N%sT
+
+# 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
+Rule Halifax	1918	only	-	Oct	31	2:00	0	S
+Rule Halifax	1920	only	-	May	 9	0:00	1:00	D
+Rule Halifax	1920	only	-	Aug	29	0:00	0	S
+Rule Halifax	1921	only	-	May	 6	0:00	1:00	D
+Rule Halifax	1921	1922	-	Sep	 5	0:00	0	S
+Rule Halifax	1922	only	-	Apr	30	0:00	1:00	D
+Rule Halifax	1923	1925	-	May	Sun>=1	0:00	1:00	D
+Rule Halifax	1923	only	-	Sep	 4	0:00	0	S
+Rule Halifax	1924	only	-	Sep	15	0:00	0	S
+Rule Halifax	1925	only	-	Sep	28	0:00	0	S
+Rule Halifax	1926	only	-	May	16	0:00	1:00	D
+Rule Halifax	1926	only	-	Sep	13	0:00	0	S
+Rule Halifax	1927	only	-	May	 1	0:00	1:00	D
+Rule Halifax	1927	only	-	Sep	26	0:00	0	S
+Rule Halifax	1928	1931	-	May	Sun>=8	0:00	1:00	D
+Rule Halifax	1928	only	-	Sep	 9	0:00	0	S
+Rule Halifax	1929	only	-	Sep	 3	0:00	0	S
+Rule Halifax	1930	only	-	Sep	15	0:00	0	S
+Rule Halifax	1931	1932	-	Sep	Mon>=24	0:00	0	S
+Rule Halifax	1933	only	-	Apr	30	0:00	1:00	D
+Rule Halifax	1933	only	-	Oct	 2	0:00	0	S
+Rule Halifax	1934	only	-	May	20	0:00	1:00	D
+Rule Halifax	1934	only	-	Sep	16	0:00	0	S
+Rule Halifax	1935	only	-	Jun	 2	0:00	1:00	D
+Rule Halifax	1935	only	-	Sep	30	0:00	0	S
+Rule Halifax	1936	only	-	Jun	 1	0:00	1:00	D
+Rule Halifax	1936	only	-	Sep	14	0:00	0	S
+Rule Halifax	1937	1938	-	May	Sun>=1	0:00	1:00	D
+Rule Halifax	1937	1941	-	Sep	Mon>=24	0:00	0	S
+Rule Halifax	1939	only	-	May	28	0:00	1:00	D
+Rule Halifax	1940	1941	-	May	Sun>=1	0:00	1:00	D
+Rule Halifax	1942	only	-	Feb	9	2:00	1:00	D
+Rule Halifax	1945	1959	-	Sep	lastSun	2:00	0	S
+Rule Halifax	1946	1959	-	Apr	lastSun	2:00	1:00	D
+Rule Halifax	1962	1986	-	Apr	lastSun	2:00	1:00	D
+Rule Halifax	1962	max	-	Oct	lastSun	2:00	0	S
+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
+
+# 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
+Rule	Mont	1918	only	-	Oct	31	2:00	0	S
+Rule	Mont	1919	only	-	Mar	31	2:30	1:00	D
+Rule	Mont	1919	only	-	Oct	25	2:30	0	S
+Rule	Mont	1920	only	-	May	 2	2:30	1:00	D
+Rule	Mont	1920	only	-	Oct	 3	2:30	0	S
+Rule	Mont	1921	only	-	May	 1	2:00	1:00	D
+Rule	Mont	1921	only	-	Oct	 2	2:30	0	S
+Rule	Mont	1922	only	-	Apr	30	2:00	1:00	D
+Rule	Mont	1922	only	-	Oct	 1	2:30	0	S
+Rule	Mont	1924	only	-	May	17	2:00	1:00	D
+Rule	Mont	1924	1926	-	Sep	lastSun	2:30	0	S
+Rule	Mont	1925	1926	-	May	Sun>=1	2:00	1:00	D
+Rule	Mont	1927	only	-	May	 1	0:00	1:00	D
+Rule	Mont	1927	1932	-	Sep	Sun>=25	0:00	0	S
+Rule	Mont	1928	1931	-	Apr	Sun>=25	0:00	1:00	D
+Rule	Mont	1932	only	-	May	 1	0:00	1:00	D
+Rule	Mont	1933	1940	-	Apr	Sun>=24	0:00	1:00	D
+Rule	Mont	1933	only	-	Oct	 1	0:00	0	S
+Rule	Mont	1934	1939	-	Sep	Sun>=24	0:00	0	S
+Rule	Mont	1945	1948	-	Sep	lastSun	2:00	0	S
+Rule	Mont	1946	1986	-	Apr	lastSun	2:00	1:00	D
+Rule	Mont	1949	1950	-	Oct	lastSun	2:00	0	S
+Rule	Mont	1951	1956	-	Sep	lastSun	2:00	0	S
+Rule	Mont	1957	max	-	Oct	lastSun	2:00	0	S
+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
+
+# 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
+Rule	Winn	1918	only	-	Oct	31	2:00	0	S
+Rule	Winn	1937	only	-	May	16	2:00	1:00	D
+Rule	Winn	1937	only	-	Sep	23	2:00	0	S
+Rule	Winn	1942	only	-	Feb	 9	2:00	1:00	D
+Rule	Winn	1945	only	-	Sep	lastSun	2:00	0	S
+Rule	Winn	1946	only	-	May	12	2:00	1:00	D
+Rule	Winn	1946	only	-	Oct	13	2:00	0	S
+Rule	Winn	1947	1949	-	Apr	lastSun	2:00	1:00	D
+Rule	Winn	1947	1958	-	Sep	lastSun	2:00	0	S
+Rule	Winn	1948	only	-	May	 1	2:00	1:00	D
+Rule	Winn	1948	1960	-	Apr	lastSun	2:00	1:00	D
+Rule	Winn	1959	only	-	Oct	lastSun	2:00	0	S
+Rule	Winn	1960	only	-	Sep	lastSun	2:00	0	S
+Rule	Winn	1963	only	-	Apr	lastSun	2:00	1:00	D
+Rule	Winn	1963	only	-	Sep	lastSun	2:00	0	S
+Rule	Winn	1966	1986	-	Apr	lastSun	2:00	1:00	D
+Rule	Winn	1966	max	-	Sep	lastSun	2:00	0	S
+Rule	Winn	1987	max	-	Apr	Sun>=1	2:00	1:00	D
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Winnipeg	-6:28:36 -	LMT	1887 Jul 16
+			-6:00	Winn	C%sT
+
+# 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
+Rule	Regina	1930	1934	-	Oct	Sun>=1	0:00	0	S
+Rule	Regina	1937	1941	-	Apr	Sun>=8	0:00	1:00	D
+Rule	Regina	1937	only	-	Oct	Sun>=8	0:00	0	S
+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
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Regina	-6:58:36 -	LMT	1905 Sep
+			-7:00	Regina	M%sT	1966 Apr 15
+			-6:00	-	CST
+
+# 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
+Rule	Edm	1920	1923	-	Apr	lastSun	2:00	1:00	D
+Rule	Edm	1920	only	-	Oct	lastSun	2:00	0	S
+Rule	Edm	1921	1923	-	Sep	lastSun	2:00	0	S
+Rule	Edm	1942	only	-	Feb	 9	2:00	1:00	D
+Rule	Edm	1945	only	-	Sep	lastSun	2:00	0	S
+Rule	Edm	1947	only	-	Apr	lastSun	2:00	1:00	D
+Rule	Edm	1947	only	-	Sep	lastSun	2:00	0	S
+Rule	Edm	1967	only	-	Apr	lastSun	2:00	1:00	D
+Rule	Edm	1967	only	-	Oct	lastSun	2:00	0	S
+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	max	-	Oct	lastSun	2:00	0	S
+Rule	Edm	1987	max	-	Apr	Sun>=1	2:00	1:00	D
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Edmonton	-7:33:52 -	LMT	1906 Sep
+			-7:00	Edm	M%sT
+
+# 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
+Rule	Vanc	1945	only	-	Sep	30	2:00	0	S
+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	max	-	Oct	lastSun	2:00	0	S
+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
+
+# 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
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+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.
+
+###############################################################################
+
+# Mexico
+
+# From Guy Harris:
+# Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
+# 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
+# Coast (States of Sinaloa and Sonora)."
+
+# From Bob Devine (January 28, 1988):
+# The Federal District (where Mexico City is) has observed [DST] several
+# times but not recently.
+#
+# I don't where to drawn the line in the North Baja area.  28th latitude
+# sounds good -- but it may be higher (how far [d]o radio stations from
+# San Diego affect culture?).
+#
+# The dates of DST probably go back to 1981.  The rules are the same as
+# US's.  This is going to be a headache for US presidential electi[o]n years!
+
+# From Arthur David Olson (February 13, 1988)
+# Since the 1981 starting date is only "probable," we'll keep the 1987
+# starting date below.
+
+# From U. S. Naval Observatory (January 19, 1989):
+# MEXICO BAJA CAL N   7 H  BEHIND UTC    BAJA CALIFORNIA SUR AND
+# MEXICO BAJA CAL N                      N. PACIFIC COAST (STATES
+# MEXICO BAJA CAL N                      OF SINALOA AND SONORA)
+# MEXICO BAJA CAL N   8 H  BEHIND UTC    ABOVE 28TH PARALLAL APR 3
+# MEXICO BAJA CAL N                      - OCT 29
+# MEXICO BAJA CAL N   7 H  BEHIND UTC    ABOVE 28TH PARALLAL APR 3
+# MEXICO BAJA CAL N                      - 0CT 29
+# MEXICO              6 H  BEHIND UTC    STATES OF DURANGO,
+# MEXICO                                 COAHUILA, NUEVO LEON,
+# MEXICO                                 TAMAULIPAS
+# MEXICO              5 H  BEHIND UTC    STATES OF DURANGO,
+# MEXICO                                 COAHUILA, NUEVO LEON,
+# MEXICO                                 TAMAULIPAS  APR 3 - OCT 29
+# MEXICO              6 H  BEHIND UTC    GENERAL MEXICO, STATES OF
+# MEXICO                                 CAMPECHE, QUINTANA ROO AND
+# MEXICO                                 YUCATAN
+
+# From Arthur David Olson (January 21, 1989):
+# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989.  Ahem.
+# USNO claims there should be four Mexican zones rather than three:
+# 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):
+# 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 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
+Rule	Mexico	1941	only	-	Apr	1	0:00	0	S
+Rule	Mexico	1943	only	-	Dec	16	0:00	1:00	D
+Rule	Mexico	1944	only	-	May	1	0:00	0	S
+Rule	Mexico	1950	only	-	Feb	12	0:00	1:00	D
+Rule	Mexico	1950	only	-	Jul	30	0:00	0	S
+Rule	BajaN	1950	1966	-	Apr	lastSun	2:00	1:00	D
+Rule	BajaN	1950	1961	-	Sep	lastSun	2:00	0	S
+Rule	BajaN	1961	1966	-	Oct	lastSun	2:00	0	S
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Mexico_City -6:36:36 -	LMT	1922 Jan  1  0:23:24
+			-7:00	-	MST	1927 Jun 10 23:00
+			-6:00	-	CST	1930 Nov 15
+			-7:00	-	MST	1931 May  1 23:00
+			-6:00	-	CST	1931 Oct
+			-7:00	-	MST	1932 Mar 30 23:00
+			-6:00	Mexico	C%sT
+Zone America/Mazatlan	-7:05:40 -	LMT	1921 Dec 31 23:54:20
+			-7:00	-	MST	1927 Jun 10 23:00
+			-6:00	-	CST	1930 Nov 15
+			-7:00	-	MST	1931 May  1 23:00
+			-6:00	-	CST	1931 Oct
+			-7:00	-	MST	1932 Mar 30 23:00
+			-6:00	-	CST	1942 Apr
+			-7:00	-	MST	1949 Jan 14
+			-8:00	-	PST	1970
+			-7:00	-	MST
+Zone America/Tijuana	-7:48:04 -	LMT	1922 Jan  1  0:11:56
+			-8:00	-	PST	1927 Jun 10 23:00
+			-7:00	-	MST	1930 Nov 16
+			-8:00	-	PST	1942 Apr
+			-7:00	-	MST	1949 Jan 14
+			-8:00	BajaN	P%sT	1967 Apr lastSun 2:00
+			-8:00	US	P%sT
+Zone America/Ensenada	-7:46:28 -	LMT	1922 Jan  1  0:13:32
+			-8:00	-	PST	1927 Jun 10 23:00
+			-7:00	-	MST	1930 Nov 16
+			-8:00	-	PST	1942 Apr
+			-7:00	-	MST	1949 Jan 14
+			-8:00	-	PST
+#
+# Revillagigedo Is
+# no information
+
+###############################################################################
+
+# Anguilla
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Anguilla	-4:12:16 -	LMT	1912 Mar 2
+			-4:00	-	AST
+
+# Antigua and Barbuda
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Antigua	-4:07:12 -	LMT	1912 Mar 2
+			-5:00	-	EST	1951
+			-4:00	-	AST
+
+# 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
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Nassau	-5:09:24 -	LMT	1912 Mar 2
+			-5:00	Bahamas	E%sT
+
+# 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
+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 America/Barbados	-3:58:28 -	LMT	1924		# Bridgetown
+			-3:58	-	BMT	1932	  # Bridgetown Mean Time
+			-4:00	Barb	A%sT
+
+# 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
+Rule	Belize	1974	only	-	Feb	 9	0:00	0	S
+Rule	Belize	1982	only	-	Dec	18	0:00	1:00	D
+Rule	Belize	1983	only	-	Feb	12	0:00	0	S
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Belize	-5:52:48 -	LMT	1912 Apr
+			-6:00	Belize	C%sT
+
+# Bermuda
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Atlantic/Bermuda	-4:19:04 -	LMT	1930 Jan  1 2:00    # Hamilton
+			-4:00	-	AST	1974 Apr 28 2:00
+			-4:00	Bahamas	A%sT
+
+# Cayman Is
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Cayman	-5:25:32 -	LMT	1890		# Georgetown
+			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:00	-	EST
+
+# Clipperton
+# no information
+
+# Costa Rica
+# 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
+Rule	CR	1991	only	-	Jul	1	0:00	0	S
+# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Costa_Rica	-5:36:20 -	LMT	1890		# San Jose
+			-5:36	-	SJMT	1921 Jan 15 # San Jose Mean Time
+			-6:00	CR	C%sT
+# Coco
+# no information; probably like America/Costa_Rica
+
+# Cuba
+
+# From Bob Devine (January 28, 1988):
+# . . .DST is from 2nd Sunday in May to 2nd Sunday in October since 1981.
+# Change at midnight.  In 1979 & 1980, started at 3rd Sunday in March
+# (I think).
+
+# From U. S. Naval Observatory (January 19, 1989):
+# CUBA                5 H  BEHIND UTC
+# CUBA                4 H  BEHIND UTC    MAR 20 - OCT 8
+
+# 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
+Rule	Cuba	1940	1942	-	Sep	Sun>=1	0:00	0	S
+Rule	Cuba	1945	1946	-	Jun	Sun>=1	0:00	1:00	D
+Rule	Cuba	1945	1946	-	Sep	Sun>=1	0:00	0	S
+Rule	Cuba	1965	only	-	Jun	1	0:00	1:00	D
+Rule	Cuba	1965	only	-	Sep	30	0:00	0	S
+Rule	Cuba	1966	only	-	May	29	0:00	1:00	D
+Rule	Cuba	1966	only	-	Oct	2	0:00	0	S
+Rule	Cuba	1967	only	-	Apr	8	0:00	1:00	D
+Rule	Cuba	1967	1968	-	Sep	Sun>=8	0:00	0	S
+Rule	Cuba	1968	only	-	Apr	14	0:00	1:00	D
+Rule	Cuba	1969	1977	-	Apr	lastSun	0:00	1:00	D
+Rule	Cuba	1969	1971	-	Oct	lastSun	0:00	0	S
+Rule	Cuba	1972	1974	-	Oct	8	0:00	0	S
+Rule	Cuba	1975	1977	-	Oct	lastSun	0:00	0	S
+Rule	Cuba	1978	only	-	May	7	0:00	1:00	D
+Rule	Cuba	1978	1980	-	Oct	Sun>=8	0:00	0	S
+Rule	Cuba	1979	1980	-	Mar	Sun>=15	0:00	1:00	D
+Rule	Cuba	1981	1985	-	May	Sun>=5	0:00	1:00	D
+Rule	Cuba	1981	max	-	Oct	Sun>=8	0:00	0	S
+Rule	Cuba	1986	1989	-	Mar	Sun>=14	0:00	1:00	D
+Rule	Cuba	1990	only	-	Apr	1	0:00	1:00	D
+Rule	Cuba	1991	max	-	Mar	Sun>=14	0:00	1:00	D
+
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Havana	-5:29:28 -	LMT	1890
+			-5:30	-	HMT	1925 Jul 19 12:00 # Havana MT
+			-5:00	Cuba	C%sT
+
+# Dominica
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Dominica	-4:05:36 -	LMT	1911 Jul 1 0:01		# Roseau
+			-4:00	-	AST
+
+# 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
+Rule	DR	1970	only	-	Feb	21	0:00	0	S
+Rule	DR	1971	only	-	Jan	20	0:00	0	S
+Rule	DR	1972	1974	-	Jan	21	0:00	0	S
+# Zone	NAME		GMTOFF	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	E%sT	1974 Oct 27
+			-4:00	-	AST
+
+# 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'.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/El_Salvador -5:56:48 -	LMT	1921		# San Salvador
+			-6:00	Salv	C%sT
+
+# Grenada
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Grenada	-4:07:00 -	LMT	1911 Jul
+			-4:00	-	AST
+
+# Guadeloupe
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Guadeloupe	-4:06:08 -	LMT	1911 Jun 8	# Pointe a Pitre
+			-4:00	-	AST
+
+# 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
+Rule	Guat	1983	only	-	Sep	22	0:00	0	S
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Guatemala	-6:02:04 -	LMT	1918 Oct 5
+			-6:00	Guat	C%sT
+
+# 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
+Rule	Haiti	1988	max	-	Apr	Sun>=1	2:00	1:00	D
+Rule	Haiti	1988	max	-	Oct	lastSun	2:00	0	S
+# Zone	NAME		GMTOFF	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
+
+# Honduras
+# Shanks says 1921 Jan 1; go with Whitman's more precise Apr 1.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Tegucigalpa -5:48:52 -	LMT	1921 Apr
+			-6:00	Salv	C%sT
+
+# Jamaica
+
+# From Bob Devine (January 28, 1988):
+# Follows US rules.
+
+# From U. S. Naval Observatory (January 19, 1989):
+# JAMAICA             5 H  BEHIND UTC
+
+# From Shanks (1991):
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Jamaica	-5:07:12 -	LMT	1890		# Kingston
+			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:00	-	EST	1974 Jan 6 2:00
+			-5:00	US	E%sT
+
+# Martinique
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Martinique	-4:04:20 -      LMT	1890		# Fort-de-France
+			-4:04	-	FFMT	1911 May     # Fort-de-France MT
+			-4:00	-	AST	1980 Apr  6
+			-4:00	1:00	ADT	1980 Sep 28
+			-4:00	-	AST
+
+# Montserrat
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Montserrat	-4:08:52 -	LMT	1911 Jul 1 0:01   # Plymouth
+			-4:00	-	AST
+
+# 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]
+Zone	America/Managua	-5:45:08 -	LMT	1890
+			-5:45	-	MMT	1934 Jun 23  # Managua Mean Time
+			-6:00	-	CST	1973 May
+			-5:00	-	EST	1975 Feb 16
+			-6:00	Nic	C%sT
+
+# Panama
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Panama	-5:18:08 -	LMT	1890
+			-5:20	-	PMT	1908 Apr 22   # Panama Mean Time
+			-5:00	-	EST
+
+# 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
+			-4:00	-	AST	1942 May  3
+			-4:00	1:00	ADT	1945 Sep 30  2:00
+			-4:00	-	AST
+
+# St Kitts-Nevis
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/St_Kitts	-4:10:52 -	LMT	1912 Mar 2	# Basseterre
+			-4:00	-	AST
+
+# St Lucia
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/St_Lucia	-4:04:00 -	LMT	1890		# Castries
+			-4:04	-	CMT	1912	    # Castries Mean Time
+			-4:00	-	AST
+
+# St Pierre and Miquelon
+# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Miquelon	-3:44:40 -	LMT	1911 May 15	# St Pierre
+			-4:00	-	AST	1980 May
+			-3:00	Mont	SP%sT
+
+# St Vincent and the Grenadines
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/St_Vincent	-4:04:56 -	LMT	1890		# Kingstown
+			-4:05	-	KMT	1912	   # Kingstown Mean Time
+			-4:00	-	AST
+
+# Turks and Caicos
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Grand_Turk	-4:44:32 -	LMT	1890
+			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:00	-	EST	1979 Apr 29 2:00
+			-5:00	US	E%sT
+
+# Virgin Is (British and US)
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	America/Virgin	-4:19:44 -	LMT	1911 Jul    # Charlotte Amalie
+			-4:00	-	AST