Update to tzdata2004a from ftp://elsie.nci.nih.gov/pub/

7 files changed, 179 insertions, 104 deletions

diff --git a/share/zoneinfo/datfiles/asia b/share/zoneinfo/datfiles/asia
index 30bc20028e8..e3b5b09afc7 100644
--- a/share/zoneinfo/datfiles/asia
+++ b/share/zoneinfo/datfiles/asia
@@ -1,5 +1,5 @@
-# $OpenBSD: asia,v 1.17 2003/10/13 19:33:37 millert Exp $
-# @(#)asia	7.72
+# $OpenBSD: asia,v 1.18 2004/06/28 13:43:32 millert Exp $
+# @(#)asia	7.74
 
 # 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
@@ -381,7 +381,7 @@ Zone	Asia/Dili	8:22:20 -	LMT	1912
 
 # India
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Asia/Calcutta	5:53:28 -	LMT	1880
+Zone	Asia/Calcutta	5:53:28 -	LMT	1880	# Kolkata
 			5:53:20	-	HMT	1941 Oct    # Howrah Mean Time?
 			6:30	-	BURT	1942 May 15 # Burma Time
 			5:30	-	IST	1942 Sep
@@ -1012,22 +1012,29 @@ Zone	Asia/Beirut	2:22:00 -	LMT	1880
 Rule	NBorneo	1935	1941	-	Sep	14	0:00	0:20	TS # one-Third Summer
 Rule	NBorneo	1935	1941	-	Dec	14	0:00	0	-
 #
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 # peninsular Malaysia
-Zone Asia/Kuala_Lumpur	6:46:48 -	LMT	1880
-			6:55:24	-	SMT	1905 Jun # Singapore Mean Time
-			7:00	-	MALT	1933	 # Malaya Time
-			7:20	-	MALT	1942 Feb 15
-			9:00	-	JST	1945 Sep 2
-			7:20	-	MALT	1950
-			7:30	-	MALT	1982 May
+# The data here are taken from Mok Ly Yng (2003-10-30)
+# <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Asia/Kuala_Lumpur	6:46:46 -	LMT	1901 Jan  1
+			6:55:25	-	SMT	1905 Jun  1 # Singapore M.T.
+			7:00	-	MALT	1933 Jan  1 # Malaya Time
+			7:00	0:20	MALST	1936 Jan  1
+			7:20	-	MALT	1941 Sep  1
+			7:30	-	MALT	1942 Feb 16
+			9:00	-	JST	1945 Sep 12
+			7:30	-	MALT	1982 Jan  1
 			8:00	-	MYT	# Malaysia Time
 # Sabah & Sarawak
+# From Paul Eggert (2003-11-01):
+# The data here are mostly from Shanks, but the 1942, 1945 and 1982
+# transition dates are from Mok Ly Yng.
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Asia/Kuching	7:21:20	-	LMT	1926 Mar
 			7:30	-	BORT	1933	# Borneo Time
-			8:00	NBorneo	BOR%sT	1942
-			9:00	-	JST	1945 Sep 2
-			8:00	-	BORT	1982 May
+			8:00	NBorneo	BOR%sT	1942 Feb 16
+			9:00	-	JST	1945 Sep 12
+			8:00	-	BORT	1982 Jan  1
 			8:00	-	MYT
 
 # Maldives
@@ -1079,6 +1086,15 @@ Zone	Indian/Maldives	4:54:00 -	LMT	1880	# Male
 #
 # [The province of Selenge is omitted from the above lists.]
 
+# From Ganbold Ts., Ulaanbaatar <ganbold@micom.mng.net> (2004-04-17):
+# Daylight saving occurs at 02:00 local time last Saturday of March.
+# It will change back to normal at 02:00 local time last Saturday of
+# September.... As I remember this rule was changed in 2001.
+#
+# From Paul Eggert (2004-04-17):
+# For now, assume Rives McDow's informant got confused about Friday vs
+# Saturday, and that his 2001 dates should have 1 added to them.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Mongol	1983	1984	-	Apr	1	0:00	1:00	S
 Rule	Mongol	1983	only	-	Oct	1	0:00	0	-
@@ -1088,8 +1104,9 @@ Rule	Mongol	1983	only	-	Oct	1	0:00	0	-
 Rule	Mongol	1985	1998	-	Mar	lastSun	2:00s	1:00	S
 Rule	Mongol	1984	1998	-	Sep	lastSun	2:00s	0	-
 # IATA SSIM (1999-09) says Mongolia no longer observes DST.
-Rule	Mongol	2001	only	-	Apr	27	2:00s	1:00	S
-Rule	Mongol	2001	only	-	Sep	28	2:00s	0	-
+Rule	Mongol	2001	only	-	Apr	lastSat	2:00	1:00	S
+Rule	Mongol	2001	max	-	Sep	lastSat	2:00	0	-
+Rule	Mongol	2002	max	-	Mar	lastSat	2:00	1:00	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
@@ -1296,15 +1313,18 @@ Zone	Asia/Riyadh	3:06:52 -	LMT	1950
 			3:00	-	AST
 
 # Singapore
+# The data here are taken from Mok Ly Yng (2003-10-30)
+# <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Asia/Singapore	6:55:24 -	LMT	1880
-			6:55:24	-	SMT	1905 Jun # Singapore Mean Time
-			7:00	-	MALT	1933	 # Malaya Time
-			7:20	-	MALT	1942 Feb 15
-			9:00	-	JST	1945 Sep  2
-			7:20	-	MALT	1950
+Zone	Asia/Singapore	6:55:25 -	LMT	1901 Jan  1
+			6:55:25	-	SMT	1905 Jun  1 # Singapore M.T.
+			7:00	-	MALT	1933 Jan  1 # Malaya Time
+			7:00	0:20	MALST	1936 Jan  1
+			7:20	-	MALT	1941 Sep  1
+			7:30	-	MALT	1942 Feb 16
+			9:00	-	JST	1945 Sep 12
 			7:30	-	MALT	1965 Aug  9 # independence
-			7:30	-	SGT	1982 May # Singapore Time
+			7:30	-	SGT	1982 Jan  1 # Singapore Time
 			8:00	-	SGT
 
 # Spratly Is
diff --git a/share/zoneinfo/datfiles/backward b/share/zoneinfo/datfiles/backward
index bd73b9f4e1e..49fc96570db 100644
--- a/share/zoneinfo/datfiles/backward
+++ b/share/zoneinfo/datfiles/backward
@@ -1,5 +1,5 @@
-# $OpenBSD: backward,v 1.12 2003/10/13 19:33:37 millert Exp $
-# @(#)backward	7.24
+# $OpenBSD: backward,v 1.13 2004/06/28 13:43:32 millert Exp $
+# @(#)backward	7.25
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
@@ -66,7 +66,7 @@ Link	Africa/Tripoli		Libya
 Link	America/Tijuana		Mexico/BajaNorte
 Link	America/Mazatlan	Mexico/BajaSur
 Link	America/Mexico_City	Mexico/General
-Link	America/Denver		Navajo
+Link	America/Shiprock	Navajo
 Link	Pacific/Auckland	NZ
 Link	Pacific/Chatham		NZ-CHAT
 Link	Pacific/Pago_Pago	Pacific/Samoa
diff --git a/share/zoneinfo/datfiles/europe b/share/zoneinfo/datfiles/europe
index eeee5a19532..57ee377eca6 100644
--- a/share/zoneinfo/datfiles/europe
+++ b/share/zoneinfo/datfiles/europe
@@ -1,5 +1,5 @@
-# $OpenBSD: europe,v 1.16 2003/10/13 19:33:37 millert Exp $
-# @(#)europe	7.84
+# $OpenBSD: europe,v 1.17 2004/06/28 13:43:32 millert Exp $
+# @(#)europe	7.87
 
 # 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
@@ -130,7 +130,7 @@
 # transition date for London, namely 1847-12-01.  We don't know as much
 # about Dublin, so we use 1880-08-02, the legal transition time.
 
-# From Paul Eggert (2003-07-29):
+# From Paul Eggert (2003-09-27):
 # Summer Time was first seriously proposed by William Willett (1857-1915),
 # a London builder and member of the Royal Astronomical Society
 # who circulated a pamphlet ``The Waste of Daylight'' (1907)
@@ -142,7 +142,7 @@
 # it was eventually adopted as a wartime measure in 1916.
 # See: Summer Time Arrives Early, The Times (2000-05-18).
 # A monument to Willett was unveiled on 1927-05-21, in an open space in
-# a 45-acre wood near Chiselhurst, Kent that was purchased by popular
+# a 45-acre wood near Chislehurst, Kent that was purchased by popular
 # subscription and open to the public.  On the south face of the monolith,
 # designed by G. W. Miller, is the the William Willett Memorial Sundial,
 # which is permanently set to Summer Time.
@@ -708,6 +708,9 @@ Zone	Europe/Sofia	1:33:16 -	LMT	1880
 # Croatia
 # see Serbia and Montenegro
 
+# Cyprus
+# See the `asia' file.
+
 # Czech Republic
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Czech	1945	only	-	Apr	 8	2:00s	1:00	S
@@ -1832,7 +1835,7 @@ Zone Europe/Bucharest	1:44:24 -	LMT	1891 Oct
 #
 # From Andrey A. Chernov <ache@nagual.ru> (1996-10-04):
 # `MSK' and `MSD' were born and used initially on Moscow computers with
-# Unix-like OSes by several developer groups (e.g. Demos group, Kiae group)....
+# UNIX-like OSes by several developer groups (e.g. Demos group, Kiae group)....
 # The next step was the UUCP network, the Relcom predecessor
 # (used mainly for mail), and MSK/MSD was actively used there.
 #
@@ -1953,28 +1956,26 @@ Zone Asia/Irkutsk	 6:57:20 -	LMT	1880
 			 7:00	Russia	IRK%sT	1992 Jan 19 2:00s
 			 8:00	Russia	IRK%sT
 #
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
 # Aginskij Buryatskij avtonomnyj okrug, Amurskaya oblast',
 # [parts of] Respublika Sakha (Yakutiya), Chitinskaya oblast'.
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Aldansky, Amginsky, Anabarsky, Bulunsky, Churapchinsky,
-# Eveno-Bytantaisky, Gorny, Khangalassky, Kobyaisky, Lensky,
-# Megino-Kangalassky, Mirninsky, Namsky, Nyurbinsky, Olenyoksky,
-# Olyokminsky, Srednekolymsky, Suntarsky, Tattinsky, Ust-Aldansky,
-# Verkhnekolymsky, Verkhnevilyuisky, Vilyuisky, Zhigansky.
+# The Sakha districts are: Aldanskij, Amginskij, Anabarskij,
+# Bulunskij, Verkhnekolymskij, Verkhnevilyujskij, Vilyujskij, Gornyj,
+# Zhiganskij, Kobyajskij, Lenskij, Megino-Kangalasskij, Mirninskij,
+# Namskij, Nyurbinskij, Olenekskij, Olekminskij, Srednekolymskij,
+# Suntarskij, Tattinskij, Ust'-Aldanskij, Khangalasskij,
+# Churapchinskij, Eveno-Bytantajskij.
 Zone Asia/Yakutsk	 8:38:40 -	LMT	1919 Dec 15
 			 8:00	-	YAKT	1930 Jun 21 # Yakutsk Time
 			 9:00	Russia	YAK%sT	1991 Mar 31 2:00s
 			 8:00	Russia	YAK%sT	1992 Jan 19 2:00s
 			 9:00	Russia	YAK%sT
 #
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
 # Evrejskaya avtonomnaya oblast', Khabarovskij kraj, Primorskij kraj,
 # [parts of] Respublika Sakha (Yakutiya).
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Tomponsky, Ust-Maisky, Ust-Yansky, Verkhoyansky.
+# The Sakha districts are: Verkhoyanskij, Tomponskij, Ust'-Majskij,
+# Ust'-Yanskij.
 Zone Asia/Vladivostok	 8:47:44 -	LMT	1922 Nov 15
 			 9:00	-	VLAT	1930 Jun 21 # Vladivostok Time
 			10:00	Russia	VLA%sT	1991 Mar 31 2:00s
@@ -1991,11 +1992,11 @@ Zone Asia/Sakhalin	 9:30:48 -	LMT	1905 Aug 23
 			11:00	Russia	SAK%sT	1997 Mar lastSun 2:00s
 			10:00	Russia	SAK%sT
 #
-# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# From Oscar van Vlijmen (2003-10-18): [This region consists of]
 # Magadanskaya oblast', Respublika Sakha (Yakutiya).
-#
-# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
-# Abyisky, Allaikhovsky, Momsky, Nizhnekolymsky, Oimyakonsky.
+# Probably also: Kuril Islands.
+# The Sakha districts are: Abyjskij, Allaikhovskij, Momskij,
+# Nizhnekolymskij, Ojmyakonskij.
 Zone Asia/Magadan	10:03:12 -	LMT	1924 May  2
 			10:00	-	MAGT	1930 Jun 21 # Magadan Time
 			11:00	Russia	MAG%sT	1991 Mar 31 2:00s
diff --git a/share/zoneinfo/datfiles/iso3166.tab b/share/zoneinfo/datfiles/iso3166.tab
index c69fc75ad8e..48678a02d6b 100644
--- a/share/zoneinfo/datfiles/iso3166.tab
+++ b/share/zoneinfo/datfiles/iso3166.tab
@@ -1,7 +1,7 @@
-# $OpenBSD: iso3166.tab,v 1.10 2003/10/13 19:33:37 millert Exp $
+# $OpenBSD: iso3166.tab,v 1.11 2004/06/28 13:43:32 millert Exp $
 # ISO 3166 alpha-2 country codes
 #
-# @(#)iso3166.tab	1.9
+# @(#)iso3166.tab	1.14
 #
 # From Paul Eggert <eggert@twinsun.com> (2003-02-04):
 #
diff --git a/share/zoneinfo/datfiles/leapseconds b/share/zoneinfo/datfiles/leapseconds
index 914d9e4ff38..f6c1f1da722 100644
--- a/share/zoneinfo/datfiles/leapseconds
+++ b/share/zoneinfo/datfiles/leapseconds
@@ -1,5 +1,5 @@
-# $OpenBSD: leapseconds,v 1.10 2003/10/05 23:58:15 millert Exp $
-# @(#)leapseconds	7.16
+# $OpenBSD: leapseconds,v 1.11 2004/06/28 13:43:32 millert Exp $
+# @(#)leapseconds	7.17
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -45,19 +45,20 @@ Leap	1995	Dec	31	23:59:60	+	S
 Leap	1997	Jun	30	23:59:60	+	S
 Leap	1998	Dec	31	23:59:60	+	S
 
-# 		INTERNATIONAL EARTH ROTATION SERVICE (IERS)
-# 		SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE
+# 	INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
+# 
+# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
 # 
 # SERVICE DE LA ROTATION TERRESTRE
 # OBSERVATOIRE DE PARIS
 # 61, Av. de l'Observatoire 75014 PARIS (France)
 # Tel.      : 33 (0) 1 40 51 22 26
 # FAX       : 33 (0) 1 40 51 22 91
-# Internet  : iers@obspm.fr
+# Internet  : services.iers@obspm.fr
 # 
-# 				 		Paris, 1 July 2003
+# 						Paris, 15 January 2004
 # 
-# 						Bulletin C 26
+# 						Bulletin C 27
 # 
 # 						To authorities responsible
 # 						for the measurement and
@@ -65,10 +66,10 @@ Leap	1998	Dec	31	23:59:60	+	S
 # 
 # 			INFORMATION ON UTC - TAI
 # 
-# NO positive leap second will be introduced at the end of December 2003.
+# NO positive leap second will be introduced at the end of June 2004.
 # The difference between UTC and the International Atomic Time TAI is:
-# 		
-# 	from 1999 January 1, 0h UTC, until further notice: UTC-TAI = -32 s
+# 
+# 	from 1999 January 1, 0h UTC, until further notice : UTC-TAI = -32 s
 # 
 # Leap seconds can be introduced in UTC at the end of the months of December
 # or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
@@ -78,3 +79,4 @@ Leap	1998	Dec	31	23:59:60	+	S
 # 					Daniel GAMBIS
 # 					Director
 # 					Earth Orientation Center of IERS
+# 					Observatoire de Paris, France
diff --git a/share/zoneinfo/datfiles/northamerica b/share/zoneinfo/datfiles/northamerica
index 93238add8fa..bbbde8f7ea7 100644
--- a/share/zoneinfo/datfiles/northamerica
+++ b/share/zoneinfo/datfiles/northamerica
@@ -1,5 +1,5 @@
-# $OpenBSD: northamerica,v 1.16 2003/10/13 19:33:37 millert Exp $
-# @(#)northamerica	7.63
+# $OpenBSD: northamerica,v 1.17 2004/06/28 13:43:32 millert Exp $
+# @(#)northamerica	7.69
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -194,10 +194,6 @@ Rule	US	1987	max	-	Apr	Sun>=1	2:00	1:00	D
 #	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.
-#
 # From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
 # Public law 106-564 (2000-12-23) introduced the abbreviation
 # "Chamorro Standard Time" for time in Guam and the Northern Marianas.
@@ -229,7 +225,9 @@ Zone America/New_York	-4:56:02 -	LMT	1883 Nov 18 12:00
 
 # US central time, represented by Chicago
 
-# Alabama, Arkansas, Florida panhandle, Illinois, western Indiana
+# Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
+# Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
+# Washington counties), Illinois, western Indiana
 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
 # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
 # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
@@ -259,7 +257,7 @@ Zone America/North_Dakota/Center -6:45:12 - LMT	1883 Nov 18 12:00
 
 # US mountain time, represented by Denver
 #
-# Colorado, southern Idaho, far western Kansas, Montana, western
+# Colorado, far western Kansas, Montana, western
 # Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City),
 # New Mexico, southwestern North Dakota, far eastern Oregon,
 # western South Dakota, far western Texas (El Paso County, Hudspeth County,
@@ -281,7 +279,9 @@ Zone America/Denver	-6:59:56 -	LMT	1883 Nov 18 12:00
 
 # US Pacific time, represented by Los Angeles
 #
-# California, northern Idaho, most of Nevada, most of Oregon, and Washington
+# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
+# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties),
+# most of Nevada, most of Oregon, and Washington
 #
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER
 Rule	CA	1948	only	-	Mar	14	2:00	1:00	D
@@ -320,13 +320,14 @@ Zone America/Juneau	 15:02:19 -	LMT	1867 Oct 18
 			 -8:00	US	P%sT	1946
 			 -8:00	-	PST	1969
 			 -8:00	US	P%sT	1983 Oct 30 2:00
+			 -9:00	US	Y%sT	1983 Nov 30
 			 -9:00	US	AK%sT
 Zone America/Yakutat	 14:41:05 -	LMT	1867 Oct 18
 			 -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	Y%sT	1983 Nov 30
 			 -9:00	US	AK%sT
 Zone America/Anchorage	 14:00:24 -	LMT	1867 Oct 18
 			 -9:59:36 -	LMT	1900 Aug 20 12:00
@@ -335,6 +336,7 @@ Zone America/Anchorage	 14:00:24 -	LMT	1867 Oct 18
 			-10:00	-	CAT	1967 Apr
 			-10:00	-	AHST	1969
 			-10:00	US	AH%sT	1983 Oct 30 2:00
+			 -9:00	US	Y%sT	1983 Nov 30
 			 -9:00	US	AK%sT
 Zone America/Nome	 12:58:21 -	LMT	1867 Oct 18
 			-11:01:38 -	LMT	1900 Aug 20 12:00
@@ -343,6 +345,7 @@ Zone America/Nome	 12:58:21 -	LMT	1867 Oct 18
 			-11:00	-	NST	1967 Apr
 			-11:00	-	BST	1969
 			-11:00	US	B%sT	1983 Oct 30 2:00
+			 -9:00	US	Y%sT	1983 Nov 30
 			 -9:00	US	AK%sT
 Zone America/Adak	 12:13:21 -	LMT	1867 Oct 18
 			-11:46:38 -	LMT	1900 Aug 20 12:00
@@ -351,6 +354,7 @@ Zone America/Adak	 12:13:21 -	LMT	1867 Oct 18
 			-11:00	-	NST	1967 Apr
 			-11:00	-	BST	1969
 			-11:00	US	B%sT	1983 Oct 30 2:00
+			-10:00	US	AH%sT	1983 Nov 30
 			-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,
@@ -406,14 +410,20 @@ Zone America/Phoenix	-7:28:18 -	LMT	1883 Nov 18 12:00
 			-7:00	-	MST
 # From Arthur David Olson (1988-02-13):
 # A writer from the Inter Tribal Council of Arizona, Inc.,
-# notes in private correspondence dated 12/28/87 that "Presently, only the
+# notes in private correspondence dated 1987-12-28 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
 
-# Southern Idaho and eastern Oregon switched four weeks late in 1974.
+# Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine,
+# Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark,
+# Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome,
+# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power,
+# Teton, Twin Falls, Valley, Washington counties) 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
@@ -952,10 +962,18 @@ Rule	Mont	1922	only	-	Apr	30	2:00	1:00	D
 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	1937	-	Apr	lastSat	24:00	1:00	D
-Rule	Mont	1927	1937	-	Sep	lastSat	24:00	0	S
-Rule	Mont	1938	1940	-	Apr	lastSun	0:00	1:00	D
-Rule	Mont	1938	1939	-	Sep	lastSun	0:00	0	S
+# The 1927-to-1937 rules can be expressed more simply as
+# Rule	Mont	1927	1937	-	Apr	lastSat	24:00	1:00	D
+# Rule	Mont	1927	1937	-	Sep	lastSat	24:00	0	S
+# The rules below avoid use of 24:00
+# (which pre-1998 versions of zic cannot handle).
+Rule	Mont	1927	only	-	May	1	0:00	1:00	D
+Rule	Mont	1927	1932	-	Sep	lastSun	0:00	0	S
+Rule	Mont	1928	1931	-	Apr	lastSun	0:00	1:00	D
+Rule	Mont	1932	only	-	May	1	0:00	1:00	D
+Rule	Mont	1933	1940	-	Apr	lastSun	0:00	1:00	D
+Rule	Mont	1933	only	-	Oct	1	0:00	0	S
+Rule	Mont	1934	1939	-	Sep	lastSun	0:00	0	S
 Rule	Mont	1946	1973	-	Apr	lastSun	2:00	1:00	D
 Rule	Mont	1945	1948	-	Sep	lastSun	2:00	0	S
 Rule	Mont	1949	1950	-	Oct	lastSun	2:00	0	S
@@ -972,14 +990,19 @@ Rule	Toronto	1922	1923	-	May	Sun>=8	2:00	1:00	D
 # Shanks says 1923-09-19; assume it's a typo and that "-16" was meant.
 Rule	Toronto	1922	1926	-	Sep	Sun>=15	2:00	0	S
 Rule	Toronto	1924	1927	-	May	Sun>=1	2:00	1:00	D
-Rule	Toronto	1927	1928	-	Sep	lastSun	2:00	0	S
-Rule	Toronto	1928	only	-	Apr	lastSun	2:00	1:00	D
-Rule	Toronto	1929	only	-	Apr	lastSun	0:00	1:00	D
-Rule	Toronto	1929	only	-	Sep	lastSun	0:00	0	S
-Rule	Toronto	1930	1937	-	Apr	lastSat	24:00	1:00	D
-Rule	Toronto	1930	1937	-	Sep	lastSat	24:00	0	S
-Rule	Toronto	1938	1940	-	Apr	lastSun	0:00	1:00	D
-Rule	Toronto	1938	1939	-	Sep	lastSun	0:00	0	S
+# The 1927-to-1939 rules can be expressed more simply as
+# Rule	Toronto	1927	1937	-	Sep	Sun>=25	2:00	0	S
+# Rule	Toronto	1928	1937	-	Apr	Sun>=25	2:00	1:00	D
+# Rule	Toronto	1938	1940	-	Apr	lastSun	2:00	1:00	D
+# Rule	Toronto	1938	1939	-	Sep	lastSun	2:00	0	S
+# The rules below avoid use of Sun>=25
+# (which pre-2004 versions of zic cannot handle).
+Rule	Toronto	1927	1932	-	Sep	lastSun	2:00	0	S
+Rule	Toronto	1928	1931	-	Apr	lastSun	2:00	1:00	D
+Rule	Toronto	1932	only	-	May	1	2:00	1:00	D
+Rule	Toronto	1933	1940	-	Apr	lastSun	2:00	1:00	D
+Rule	Toronto	1933	only	-	Oct	1	2:00	0	S
+Rule	Toronto	1934	1939	-	Sep	lastSun	2:00	0	S
 Rule	Toronto	1945	1946	-	Sep	lastSun	2:00	0	S
 Rule	Toronto	1946	only	-	Apr	lastSun	2:00	1:00	D
 Rule	Toronto	1947	1949	-	Apr	lastSun	0:00	1:00	D
@@ -997,15 +1020,19 @@ Rule	Toronto	1957	1973	-	Oct	lastSun	2:00	0	S
 # Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
 # Port Arthur, Ontario, the principle of the Bill has been in
 # operation for the past three years, and in the City of Moose Jaw,
-# Saskatchewan, for one year."  Assume that the Thunder Bay region
-# observed DST starting 1910, and Moose Jaw starting 1912, as this
-# matches the Toronto Star report about Moose Jaw.  For lack of better
-# info, assume the Thunder Bay region used Willett's proposal, namely
-# third Sunday in April at 02:00 to third Sunday in September at
-# 03:00; also assume that they continued until Canada instituted
-# uniform DST in 1918.
-Rule	Thunder	1910	1917	-	Apr	Sun>=15	2:00s	1:00	D
-Rule	Thunder	1910	1917	-	Sep	Sun>=15	2:00s	0	S
+# Saskatchewan, for one year."
+
+# From David Bryan via Tory Tronrud, Director/Curator,
+# Thunder Bay Museum (2003-11-12):
+# There is some suggestion, however, that, by-law or not, daylight
+# savings time was being practiced in Fort William and Port Arthur
+# before 1909.... [I]n 1910, the line between the Eastern and Central
+# Time Zones was permanently moved about two hundred miles west to
+# include the Thunder Bay area....  When Canada adopted daylight
+# savings time in 1916, Fort William and Port Arthur, having done so
+# already, did not change their clocks....  During the Second World
+# War,... [t]he cities agreed to implement DST during the summer
+# months for the remainder of the war years.
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Montreal	-4:54:16 -	LMT	1884
@@ -1022,9 +1049,8 @@ Zone America/Toronto	-5:17:32 -	LMT	1895
 			-5:00	Toronto	E%sT	1974
 			-5:00	Canada	E%sT
 Zone America/Thunder_Bay -5:57:00 -	LMT	1895
-			-5:00	Thunder	E%sT	1918
-			-5:00	Canada	E%sT	1940 Sep 29
-			-5:00	1:00	EDT	1942 Feb  9 2:00s
+			-6:00	-	CST	1910
+			-5:00	-	EST	1942
 			-5:00	Canada	E%sT	1970
 			-5:00	Mont	E%sT	1973
 			-5:00	-	EST	1974
diff --git a/share/zoneinfo/datfiles/southamerica b/share/zoneinfo/datfiles/southamerica
index eac300aa76c..bd7b0340cfe 100644
--- a/share/zoneinfo/datfiles/southamerica
+++ b/share/zoneinfo/datfiles/southamerica
@@ -1,5 +1,5 @@
-# $OpenBSD: southamerica,v 1.16 2003/10/13 19:33:38 millert Exp $
-# @(#)southamerica	7.49
+# $OpenBSD: southamerica,v 1.17 2004/06/28 13:43:32 millert Exp $
+# @(#)southamerica	7.51
 
 # 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
@@ -142,6 +142,13 @@ Rule	Arg	2000	only	-	Mar	Sun>=1	0:00	0	-
 # This kind of things had always been done this way in Argentina.
 # We are still -03:00 all year round in all of the country.
 #
+# From Mariano Absatz (2004-05-21):
+# Today it was officially published that the Province of Mendoza is changing
+# its timezone this winter... starting tomorrow night....
+# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf
+# From Paul Eggert (2004-05-24):
+# It's Law No. 7,210.  This change is due to a public power emergency, so for
+# now we'll assume it's for this year only.
 #
 # From Paul Eggert (2002-01-22):
 # <a href="http://www.spicasc.net/horvera.html">
@@ -233,6 +240,8 @@ Zone America/Mendoza	-4:35:16 -	LMT	1894 Oct 31
 			-4:00	-	WART	1992 Oct 18
 			-3:00	Arg	AR%sT	1999 Oct  3
 			-4:00	Arg	AR%sT	2000 Mar  3
+			-3:00	-	ART	2004 May 23
+			-4:00	-	WART	2004 Oct 17
 			-3:00	-	ART
 
 # Aruba
@@ -390,10 +399,10 @@ Rule	Brazil	1992	only	-	Oct	25	 0:00	1:00	S
 Rule	Brazil	1993	only	-	Jan	31	 0:00	0	-
 # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28)
 # adopted by same states, plus AM.
-# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22)
-# adopted by same states, minus AM.
+# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22;
+# web page corrected 2004-01-07) adopted by same states, minus AM.
 # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14)
-# adopted by same states, plus TO.
+# adopted by same states, plus MT and TO.
 # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13)
 # adds AL, SE.
 Rule	Brazil	1993	1995	-	Oct	Sun>=11	 0:00	1:00	S
@@ -456,11 +465,19 @@ Rule	Brazil	2003	max	-	Oct	Sun>=15	 0:00	1:00	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #
-# Atlantic islands: Fernando de Noronha, Trindade, Martin Vaz,
-# Atol das Rocas, and Penedos de Sao Pedro e Sao Paulo
+# Fernando de Noronha (administratively part of PE)
 Zone America/Noronha	-2:09:40 -	LMT	1914
 			-2:00	Brazil	FN%sT	1990 Sep 17
+			-2:00	-	FNT	1999 Sep 30
+			-2:00	Brazil	FN%sT	2000 Oct 15
+			-2:00	-	FNT	2001 Sep 13
+			-2:00	Brazil	FN%sT	2002 Oct  1
 			-2:00	-	FNT
+# Other Atlantic islands have no permanent settlement.
+# These include Trindade and Martin Vaz (administratively part of ES),
+# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE).
+# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
+# it also included the Penedos.
 #
 # Amapa (AP), east Para (PA)
 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu.
@@ -812,13 +829,22 @@ Zone America/Asuncion	-3:50:40 -	LMT	1890
 			-4:00	Para	PY%sT
 
 # Peru
+#
+# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net">
+# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a>
+# When we were in Peru in 1985-1986, they apparently switched over 
+# sometime between December 29 and January 3 while we were on the Amazon.
+#
+# From Paul Eggert (2003-11-02):
+# Shanks doesn't have this transition.  Assume 1986 was like 1987.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Peru	1938	only	-	Jan	 1	0:00	1:00	S
 Rule	Peru	1938	only	-	Apr	 1	0:00	0	-
 Rule	Peru	1938	1939	-	Sep	lastSun	0:00	1:00	S
 Rule	Peru	1939	1940	-	Mar	Sun>=24	0:00	0	-
-Rule	Peru	1987	only	-	Jan	 1	0:00	1:00	S
-Rule	Peru	1987	only	-	Apr	 1	0:00	0	-
+Rule	Peru	1986	1987	-	Jan	 1	0:00	1:00	S
+Rule	Peru	1986	1987	-	Apr	 1	0:00	0	-
 Rule	Peru	1990	only	-	Jan	 1	0:00	1:00	S
 Rule	Peru	1990	only	-	Apr	 1	0:00	0	-
 # IATA is ambiguous for 1993/1995; go with Shanks.