13 files changed, 552 insertions, 229 deletions

diff --git a/timezone/antarctica b/timezone/antarctica
index 04613f46b6..3a2b64abf3 100644
--- a/timezone/antarctica
+++ b/timezone/antarctica
@@ -1,4 +1,4 @@
-# @(#)antarctica	7.18
+# @(#)antarctica	7.20
 
 # From Paul Eggert (1999-11-15):
 # To keep things manageable, we list only locations occupied year-round; see
@@ -14,7 +14,19 @@
 #
 # Except for the French entries,
 # I made up all time zone abbreviations mentioned here; corrections welcome!
-# FORMAT is `___' and GMTOFF is 0 for locations while uninhabited.
+# FORMAT is `zzz' and GMTOFF is 0 for locations while uninhabited.
+
+# These rules are stolen from the `europe' file.
+# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+Rule	RussAQ	1981	1984	-	Apr	 1	 0:00	1:00	S
+Rule	RussAQ	1981	1983	-	Oct	 1	 0:00	0	-
+Rule	RussAQ	1984	1991	-	Sep	lastSun	 2:00s	0	-
+Rule	RussAQ	1985	1991	-	Mar	lastSun	 2:00s	1:00	S
+Rule	RussAQ	1992	only	-	Mar	lastSat	 23:00	1:00	S
+Rule	RussAQ	1992	only	-	Sep	lastSat	 23:00	0	-
+Rule	RussAQ	1993	max	-	Mar	lastSun	 2:00s	1:00	S
+Rule	RussAQ	1993	1995	-	Sep	lastSun	 2:00s	0	-
+Rule	RussAQ	1996	max	-	Oct	lastSun	 2:00s	0	-
 
 # These rules are stolen from the `southamerica' file.
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -58,13 +70,13 @@ Rule	ChileAQ	2000	max	-	Mar	Sun>=9	0:00	0	-
 #	(except 1964-11 - 1969-02)
 # Mawson, Holme Bay, -6736+06253, since 1954-02-13
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Casey	0	-	___	1969
+Zone Antarctica/Casey	0	-	zzz	1969
 			8:00	-	WST	# Western (Aus) Standard Time
-Zone Antarctica/Davis	0	-	___	1957 Jan 13
+Zone Antarctica/Davis	0	-	zzz	1957 Jan 13
 			7:00	-	DAVT	1964 Nov # Davis Time
-			0	-	___	1969 Feb
+			0	-	zzz	1969 Feb
 			7:00	-	DAVT
-Zone Antarctica/Mawson	0	-	___	1954 Feb 13
+Zone Antarctica/Mawson	0	-	zzz	1954 Feb 13
 			6:00	-	MAWT	# Mawson Time
 # References:
 # <a href="http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html">
@@ -110,7 +122,7 @@ Zone Antarctica/Mawson	0	-	___	1954 Feb 13
 #	fishing stations operated variously 1819/1931
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Indian/Kerguelen	0	-	___	1950	# Port-aux-Francais
+Zone Indian/Kerguelen	0	-	zzz	1950	# Port-aux-Francais
 			5:00	-	TFT	# ISO code TF Time
 #
 # year-round base in the main continent
@@ -120,9 +132,9 @@ Zone Indian/Kerguelen	0	-	___	1950	# Port-aux-Francais
 # It was destroyed by fire on 1952-01-14.
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/DumontDUrville 0 -	___	1947
+Zone Antarctica/DumontDUrville 0 -	zzz	1947
 			10:00	-	PMT	1952 Jan 14 # Port-Martin Time
-			0	-	___	1956 Nov
+			0	-	zzz	1956 Nov
 			10:00	-	DDUT	# Dumont-d'Urville Time
 # Reference:
 # <a href="http://www.icair.iac.org.nz/science/reports/fr/IFRTP.html">
@@ -149,7 +161,7 @@ Zone Antarctica/DumontDUrville 0 -	___	1947
 # was established on 1957-01-29.  Since Syowa station is still the main
 # station of Japan, it's appropriate for the principal location.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Syowa	0	-	___	1957 Jan 29
+Zone Antarctica/Syowa	0	-	zzz	1957 Jan 29
 			3:00	-	SYOT	# Syowa Time
 # See:
 # <a href="http://www.nipr.ac.jp/english/ara01.html">
@@ -190,7 +202,23 @@ Rule	NZAQ	1990	max	-	Mar	Sun>=15	2:00s	0	S
 # Mirny, Davis coast, -6633+09301, since 1956-02
 # Molodezhnaya
 # Novolazarevskaya
-# Vostok
+
+# Vostok, since 1957-12-16
+# <a href="http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP">
+# From Craig Mundell (1994-12-15)</a>:
+# Vostok, which is one of the Russian stations, is set on the same
+# time as Moscow, Russia.
+#
+# From Paul Eggert (2001-03-03):
+# Today I talked with a neighbor Robert Lee Hotz, a neighbor who
+# recently returned from Vostok.  He said that the Americans have a
+# substation next to Vostok that keeps New Zealand time.
+# He thought the Russians still use Moscow time, but wasn't sure.
+#
+Zone Antarctica/Vostok	0	-	zzz	1957 Dec 16
+			3:00	RussAQ	MSK/MSD	1991 Mar 31 2:00s
+			2:00	RussAQ	EE%sT	1992 Jan 19 2:00s
+			3:00	RussAQ	MSK/MSD
 
 # S Africa - year-round bases
 # Marion Island
@@ -228,7 +256,7 @@ Rule	NZAQ	1990	max	-	Mar	Sun>=15	2:00s	0	S
 # Palmer used to be supplied from Argentina.
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Palmer	0	-	___	1965
+Zone Antarctica/Palmer	0	-	zzz	1965
 			-4:00	ArgAQ	AR%sT	1969 Oct 5
 			-3:00	ArgAQ	AR%sT	1982 May
 			-4:00	ChileAQ	CL%sT
@@ -236,7 +264,7 @@ Zone Antarctica/Palmer	0	-	___	1965
 #
 # McMurdo, Ross Island, since 1956
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/McMurdo	0	-	___	1956
+Zone Antarctica/McMurdo	0	-	zzz	1956
 			12:00	NZAQ	NZ%sT
 #
 # Amundsen-Scott, South Pole, since 1957-01-23
diff --git a/timezone/asia b/timezone/asia
index 9c9ee54fc8..a28a708333 100644
--- a/timezone/asia
+++ b/timezone/asia
@@ -1,4 +1,4 @@
-# @(#)asia	7.58
+# @(#)asia	7.62
 
 # 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
@@ -92,7 +92,7 @@ Zone	Asia/Yerevan	2:58:00 -	LMT	1924 May  2
 			3:00	1:00	YERST	1991 Sep 23 # independence
 			3:00 RussiaAsia	AM%sT	1995 Sep 24 2:00s
 			4:00	-	AMT	1997
-			4:00 RussiaAsia	AM%sT			
+			4:00 RussiaAsia	AM%sT
 
 # Azerbaijan
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -488,7 +488,7 @@ Zone	Asia/Tehran	3:25:44	-	LMT	1916
 #
 # From Jonathan Lennox <lennox@cs.columbia.edu> (2000-06-12):
 # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
-# the U.S. edition) on the Iraqi Kurds contains a paragraph: 
+# the U.S. edition) on the Iraqi Kurds contains a paragraph:
 # "The three northern provinces ... switched their clocks this spring and
 # are an hour ahead of Baghdad."
 #
@@ -522,9 +522,25 @@ Zone	Asia/Baghdad	2:57:40	-	LMT	1890
 
 # Israel
 
-# From U. S. Naval Observatory (1989-01-19):
-# ISRAEL              2 H  AHEAD OF UTC
-# ISRAEL              3 H  AHEAD OF UTC  APR 10 - SEP 3
+# From Ephraim Silverberg (2001-01-11):
+#
+# I coined "IST/IDT" circa 1988.  Until then there were three
+# different abbreviations in use:
+#
+# JST  Jerusalem Standard Time [Danny Braniss, Hebrew University]
+# IZT  Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
+# EEST Eastern Europe Standard Time [used by almost everyone else]
+#
+# Since timezones should be called by country and not capital cities,
+# I ruled out JST.  As Israel is in Asia Minor and not Eastern Europe,
+# EEST was equally unacceptable.  Since "zonal" was not compatible with
+# any other timezone abbreviation, I felt that 'IST' was the way to go
+# and, indeed, it has received almost universal acceptance in timezone
+# settings in Israeli computers.
+#
+# In any case, I am happy to share timezone abbreviations with India,
+# high on my favorite-country list (and not only because my wife's
+# family is from India).
 
 # From Shanks:
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -611,7 +627,7 @@ Rule	Zion	1993	only	-	Sep	 5	0:00	0	S
 # Ministry of Interior, Jerusalem, Israel.  The spokeswoman can be reached by
 # calling the office directly at 972-2-6701447 or 972-2-6701448.
 
-# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
+# Rule	NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 Rule	Zion	1994	only	-	Apr	 1	0:00	1:00	D
 Rule	Zion	1994	only	-	Aug	28	0:00	0	S
 Rule	Zion	1995	only	-	Mar	31	0:00	1:00	D
@@ -669,7 +685,7 @@ Rule	Zion	2004	only	-	Sep	22	1:00	0	S
 # From Paul Eggert (2000-07-25):
 # Here are guesses for rules after 2004.
 # They are probably wrong, but they are more likely than no DST at all.
-# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
+# Rule	NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 Rule	Zion	2005	max	-	Apr	 1	1:00	1:00	D
 Rule	Zion	2005	max	-	Oct	 1	1:00	0	S
 
@@ -745,26 +761,26 @@ Zone	Asia/Tokyo	9:18:59	-	LMT	1887 Dec 31 15:00u
 # government's departments from six to seven hours.
 #
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule    Jordan	1973	only	-	Jun	6	0:00	1:00	S
-Rule    Jordan	1973	1975	-	Oct	1	0:00	0	-
-Rule    Jordan	1974	1977	-	May	1	0:00	1:00	S
-Rule    Jordan	1976	only	-	Nov	1	0:00	0	-
-Rule    Jordan	1977	only	-	Oct	1	0:00	0	-
-Rule    Jordan	1978	only	-	Apr	30	0:00	1:00	S
-Rule    Jordan	1978	only	-	Sep	30	0:00	0	-
-Rule    Jordan	1985	only	-	Apr	1	0:00	1:00	S
-Rule    Jordan	1985	only	-	Oct	1	0:00	0	-
-Rule    Jordan	1986	1988	-	Apr	Fri>=1	0:00	1:00	S
-Rule    Jordan	1986	1990	-	Oct	Fri>=1	0:00	0	-
-Rule    Jordan	1989	only	-	May	8	0:00	1:00	S
-Rule    Jordan	1990	only	-	Apr	27	0:00	1:00	S
-Rule    Jordan	1991	only	-	Apr	17	0:00	1:00	S
-Rule    Jordan	1991	only	-	Sep	27	0:00	0	-
-Rule    Jordan	1992	only	-	Apr	10	0:00	1:00	S
-Rule    Jordan	1992	1993	-	Oct	Fri>=1	0:00	0	-
-Rule    Jordan	1993	1998	-	Apr	Fri>=1	0:00	1:00	S
-Rule    Jordan	1994	only	-	Sep	Fri>=15	0:00	0	-
-Rule    Jordan	1995	1998	-	Sep	Fri>=15	0:00s	0	-
+Rule	Jordan	1973	only	-	Jun	6	0:00	1:00	S
+Rule	Jordan	1973	1975	-	Oct	1	0:00	0	-
+Rule	Jordan	1974	1977	-	May	1	0:00	1:00	S
+Rule	Jordan	1976	only	-	Nov	1	0:00	0	-
+Rule	Jordan	1977	only	-	Oct	1	0:00	0	-
+Rule	Jordan	1978	only	-	Apr	30	0:00	1:00	S
+Rule	Jordan	1978	only	-	Sep	30	0:00	0	-
+Rule	Jordan	1985	only	-	Apr	1	0:00	1:00	S
+Rule	Jordan	1985	only	-	Oct	1	0:00	0	-
+Rule	Jordan	1986	1988	-	Apr	Fri>=1	0:00	1:00	S
+Rule	Jordan	1986	1990	-	Oct	Fri>=1	0:00	0	-
+Rule	Jordan	1989	only	-	May	8	0:00	1:00	S
+Rule	Jordan	1990	only	-	Apr	27	0:00	1:00	S
+Rule	Jordan	1991	only	-	Apr	17	0:00	1:00	S
+Rule	Jordan	1991	only	-	Sep	27	0:00	0	-
+Rule	Jordan	1992	only	-	Apr	10	0:00	1:00	S
+Rule	Jordan	1992	1993	-	Oct	Fri>=1	0:00	0	-
+Rule	Jordan	1993	1998	-	Apr	Fri>=1	0:00	1:00	S
+Rule	Jordan	1994	only	-	Sep	Fri>=15	0:00	0	-
+Rule	Jordan	1995	1998	-	Sep	Fri>=15	0:00s	0	-
 Rule	Jordan	1999	only	-	Jul	 1	0:00s	1:00	S
 Rule	Jordan	1999	max	-	Sep	lastThu	0:00s	0	-
 Rule	Jordan	2000	max	-	Mar	lastThu	0:00s	1:00	S
diff --git a/timezone/australasia b/timezone/australasia
index 13bf8591ff..c9d3046460 100644
--- a/timezone/australasia
+++ b/timezone/australasia
@@ -1,4 +1,4 @@
-# @(#)australasia	7.61
+# @(#)australasia	7.63
 # This file also includes Pacific islands.
 
 # Notes are at the end of this file
@@ -151,16 +151,16 @@ Zone Australia/Broken_Hill 9:25:48 -	LMT	1895 Feb
 
 # Lord Howe Island
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	LH	1981	1984	-	Oct	lastSun	2:00s	1:00	-
-Rule	LH	1982	1985	-	Mar	Sun>=1	2:00s	0	-
-Rule	LH	1985	only	-	Oct	lastSun	2:00s	0:30	-
-Rule	LH	1986	1989	-	Mar	Sun>=15	2:00s	0	-
-Rule	LH	1986	only	-	Oct	19	2:00s	0:30	-
-Rule	LH	1987	1999	-	Oct	lastSun	2:00s	0:30	-
-Rule	LH	1990	1995	-	Mar	Sun>=1	2:00s	0	-
-Rule	LH	1996	max	-	Mar	lastSun	2:00s	0	-
-Rule	LH	2000	only	-	Aug	lastSun	2:00s	0:30	-
-Rule	LH	2001	max	-	Oct	lastSun	2:00s	0:30	-
+Rule	LH	1981	1984	-	Oct	lastSun	2:00	1:00	-
+Rule	LH	1982	1985	-	Mar	Sun>=1	2:00	0	-
+Rule	LH	1985	only	-	Oct	lastSun	2:00	0:30	-
+Rule	LH	1986	1989	-	Mar	Sun>=15	2:00	0	-
+Rule	LH	1986	only	-	Oct	19	2:00	0:30	-
+Rule	LH	1987	1999	-	Oct	lastSun	2:00	0:30	-
+Rule	LH	1990	1995	-	Mar	Sun>=1	2:00	0	-
+Rule	LH	1996	max	-	Mar	lastSun	2:00	0	-
+Rule	LH	2000	only	-	Aug	lastSun	2:00	0:30	-
+Rule	LH	2001	max	-	Oct	lastSun	2:00	0:30	-
 Zone Australia/Lord_Howe 10:36:20 -	LMT	1895 Feb
 			10:00	-	EST	1981 Mar
 			10:30	LH	LHST
@@ -223,7 +223,8 @@ Zone	Pacific/Tahiti	 -9:58:16 -	LMT	1912 Oct	# Papeete
 # Guam
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Guam	 9:39:00 -	LMT	1901		# Agana
-			10:00	-	GST
+			10:00	-	GST	2000 Dec 23	# Guam
+			10:00	-	ChST	# Chamorro Standard Time
 
 # Kiribati
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -242,7 +243,8 @@ Zone Pacific/Kiritimati	-10:29:20 -	LMT	1901
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Pacific/Saipan	 9:43:00 -	LMT	1901
 			 9:00	-	MPT	1969 Oct # N Mariana Is Time
-			10:00	-	MPT
+			10:00	-	MPT	2000 Dec 23
+			10:00	-	ChST	# Chamorro Standard Time
 
 # Marshall Is
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -494,7 +496,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 #	  9:00	JST	Japan
 #	  9:30	CST CST	Central Australia
 #	 10:00	EST EST	Eastern Australia
-#	 10:00	GST	Guam
+#	 10:00	ChST	Chamorro
 #	 10:30	LHST LHST Lord Howe*
 #	 12:00	NZST NZDT New Zealand
 #	 12:45	CHAST CHADT Chatham*
@@ -546,11 +548,11 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # For now we'll continue to assume 2:00s for changes since 1960.
 
 # From Eric Ulevik <eau@zip.com.au> (1998-01-05):
-# 
+#
 # Here are some URLs to Australian time legislation. These URLs are stable,
 # and should probably be included in the data file. There are probably more
 # relevant entries in this database.
-# 
+#
 # NSW (including LHI and Broken Hill):
 # <a href="http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html">
 # Standard Time Act 1987 (updated 1995-04-04)
@@ -813,7 +815,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # ``Look you've got to remember in my family when this came up last time
 # I voted for it, my wife voted against it and she said to me it's all very
 # well for you, you don't have to worry about getting the children out of
-# bed, getting them to school, getting them to sleep at night. 
+# bed, getting them to school, getting them to sleep at night.
 # I've been through all this argument domestically...my wife rules.''
 #
 # Broken Hill will stick with South Australian time in 2000.  See:
@@ -876,8 +878,9 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # shown on clocks on LHI. I guess this means that for 30 minutes at the start
 # of DST, LHI is actually 1 hour ahead of the rest of NSW.
 
-# From Paul Eggert (2000-10-25):
-# For Lord Howe we use Shanks through 1989, and Lonergan thereafter,
+# From Paul Eggert (2001-02-09):
+# For Lord Howe dates we use Shanks through 1989, and Lonergan thereafter.
+# For times we use Lonergan.
 
 ###############################################################################
 
@@ -931,7 +934,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 
 # From Rives McDow (1998-10-08):
 # Fiji will introduce DST effective 0200 local time, 1998-11-01
-# until 0300 local time 1999-02-28.  Each year the DST period will 
+# until 0300 local time 1999-02-28.  Each year the DST period will
 # be from the first Sunday in November until the last Sunday in February.
 
 # From Paul Eggert (2000-01-08):
@@ -976,6 +979,11 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # (now called the Marianas) kept American date for quite some time.
 # Ignore this for now, as we have no hard data.  See also Asia/Manila.
 
+# US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time,
+# under the name "Chamorro Standard Time".  There is no official abbreviation,
+# but Congressman Robert A. Underwood, author of the bill that became law,
+# wrote in a press release (2000-12-27) that he will seek the use of "ChST".
+
 
 # Micronesia
 
@@ -1072,12 +1080,12 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 
 # From Steffen Thorsen [straen@thorsen.priv.no] (1999-09-09):
 # * Tonga will introduce DST in November
-# 
+#
 # I was given this link by John Letts <johnletts@earthlink.net>:
 # <a hef="http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm">
 # http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
 # </a>
-# 
+#
 # I have not been able to find exact dates for the transition in November
 # yet. By reading this article it seems like Fiji will be 14 hours ahead
 # of UTC as well, but as far as I know Fiji will only be 13 hours ahead
@@ -1087,10 +1095,10 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # According to <a href="http://www.tongaonline.com/news/sept1799.html>
 # http://www.tongaonline.com/news/sept1799.html
 # </a>:
-# "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000 
-# and annually thereafter from the first Saturday in October through the 
-# third Saturday of April.  Under the system approved by Privy Council on 
-# Sept. 10, clocks must be turned ahead one hour on the opening day and 
+# "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000
+# and annually thereafter from the first Saturday in October through the
+# third Saturday of April.  Under the system approved by Privy Council on
+# Sept. 10, clocks must be turned ahead one hour on the opening day and
 # set back an hour on the closing date."
 # Alas, no indication of the time of day.
 
@@ -1114,7 +1122,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # The International Date Line
 
 # From Gwillim Law (2000-01-03):
-# 
+#
 # The International Date Line is not defined by any international standard,
 # convention, or treaty.  Mapmakers are free to draw it as they please.
 # Reputable mapmakers will simply ensure that every point of land appears on
diff --git a/timezone/backward b/timezone/backward
index 2fb35afd37..0bfa8724f4 100644
--- a/timezone/backward
+++ b/timezone/backward
@@ -1,4 +1,4 @@
-# @(#)backward	7.19
+# @(#)backward	7.20
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
@@ -7,6 +7,7 @@ Link	America/Adak		America/Atka
 Link	America/Tijuana		America/Ensenada
 Link	America/Indianapolis	America/Fort_Wayne
 Link	America/Indiana/Knox	America/Knox_IN
+Link	America/Rio_Branco	America/Porto_Acre
 Link	America/St_Thomas	America/Virgin
 Link	Asia/Dhaka		Asia/Dacca
 Link	Asia/Ashgabat		Asia/Ashkhabad
@@ -44,6 +45,7 @@ Link	Africa/Cairo		Egypt
 Link	Europe/Dublin		Eire
 Link	Europe/London		GB
 Link	Europe/London		GB-Eire
+Link	Europe/Chisinau		Europe/Tiraspol
 Link	Etc/GMT+0		GMT+0
 Link	Etc/GMT-0		GMT-0
 Link	Etc/GMT0		GMT0
diff --git a/timezone/etcetera b/timezone/etcetera
index 4fb27acff3..f87a76ea48 100644
--- a/timezone/etcetera
+++ b/timezone/etcetera
@@ -1,4 +1,4 @@
-# @(#)etcetera	7.10
+# @(#)etcetera	7.11
 
 # These entries are mostly present for historical reasons, so that
 # people in areas not otherwise covered by the tz files could "zic -l"
@@ -24,10 +24,24 @@ Link	Etc/GMT				Etc/GMT-0
 Link	Etc/GMT				Etc/GMT+0
 Link	Etc/GMT				Etc/GMT0
 
-# We use POSIX-style signedness in the names and output,
-# internal-style signedness in the specifications.
-# For example, TZ=Etc/GMT+4 corresponds to 4 hours _behind_ UTC;
-# it is equivalent to TZ=GMT+4, which is implemented directly as per POSIX.
+# We use POSIX-style signs in the Zone names and the output abbreviations,
+# even though this is the opposite of what many people expect.
+# POSIX has positive signs west of Greenwich, but many people expect
+# positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
+# the abbreviation "GMT+4" and corresponds to 4 hours behind UTC
+# (i.e. west of Greenwich) even though many people would expect it to
+# mean 4 hours ahead of UTC (i.e. east of Greenwich).
+#
+# In the draft 5 of POSIX 1003.1-200x, the angle bracket notation
+# (which is not yet supported by the tz code) allows for
+# TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
+# ISO 8601 you can use TZ='<-0400>+4'.  Thus the commonly-expected
+# offset is kept within the angle bracket (and is used for display)
+# while the POSIX sign is kept outside the angle bracket (and is used
+# for calculation).
+#
+# Do not use a TZ setting like TZ='GMT+4', which is four hours behind
+# GMT but uses the completely misleading abbreviation "GMT".
 
 # Earlier incarnations of this package were not POSIX-compliant,
 # and had lines such as
diff --git a/timezone/europe b/timezone/europe
index d4869109be..d45088d33e 100644
--- a/timezone/europe
+++ b/timezone/europe
@@ -1,4 +1,4 @@
-# @(#)europe	7.75
+# @(#)europe	7.77
 
 # 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
@@ -135,6 +135,9 @@
 # <a href="http://www.the-times.co.uk/news/pages/tim/2000/05/18/x-timcrtcrt01011.html">
 # Summer Time Arrives Early, The Times (2000-05-18)
 # </a>
+# A monument was erected in 1927 to Willett, in an open space in a 45-acre wood
+# near Chiselhurst, Kent that was purchased by popular subscription and open
+# to the public.
 
 # From Paul Eggert (1996-09-03):
 # The OED Supplement says that the English originally said ``Daylight Saving''
@@ -216,7 +219,7 @@
 # Actually, that date saw the usual switch to summer time.
 # Standard time was not changed until 1968-10-27 (the clocks didn't change).
 #
-# Here is another incorrect claim by Shanks: 
+# Here is another incorrect claim by Shanks:
 #     * Jersey, Guernsey, and the Isle of Man did not switch from GMT
 #	to daylight saving time until 1921 Apr 3, when they began to
 #	conform with Great Britain.
@@ -585,7 +588,7 @@ Zone	Europe/Minsk	1:50:16 -	LMT	1880
 # Thanks to Pascal Delmoitie <pascal@belnet.be> for these references.
 # The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
 # Assume Brussels switched to WET in 1918 when the armistice took effect.
-# 
+#
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Belgium	1918	only	-	Mar	 9	 0:00s	1:00	S
 Rule	Belgium	1918	1919	-	Oct	Sat>=1	23:00s	0	-
@@ -767,7 +770,7 @@ Zone America/Thule	-4:35:08 -	LMT	1916 Jul 28 # Pituffik air base
 # But what this could mean for Estonia's chances of joining the European
 # Union are still unclear.  In 1994, the EU declared summer time compulsory
 # for all member states until 2001.  Brussels has yet to decide what to do
-# after that. 
+# after that.
 
 # From Mart Oruaas (2000-01-29):
 # Regulation no. 301 (1999-10-12) obsoletes previous regulation
@@ -808,6 +811,19 @@ Zone	Europe/Helsinki	1:39:52 -	LMT	1878 May 31
 			2:00	EU	EE%sT
 
 # France
+
+# From Ciro Discepolo (2000-12-20):
+#
+# Henri Le Corre, Regimes Horaires pour le monde entier, Editions
+# Traditionnelles - Paris 2 books, 1993
+#
+# Gabriel, Traite de l'heure dans le monde, Guy Tredaniel editeur,
+# Paris, 1991
+#
+# Francoise Gauquelin, Problemes de l'heure resolus en astrologie,
+# Guy tredaniel, Paris 1987
+
+
 #
 # Shanks seems to use `24:00' ambiguously; we resolve it with Whitman.
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -844,8 +860,14 @@ Rule	France	1938	only	-	Mar	26	23:00s	1:00	S
 Rule	France	1939	only	-	Apr	15	23:00s	1:00	S
 Rule	France	1939	only	-	Nov	18	23:00s	0	-
 Rule	France	1940	only	-	Feb	25	 2:00	1:00	S
-# The French rules for 1941-1944 were not used in Paris,
-# but were used in other places (e.g. Monaco).
+# The French rules for 1941-1944 were not used in Paris, but Shanks writes
+# that they were used in Monaco and in many French locations.
+# Le Corre writes that the upper limit of the free zone was Arneguy, Orthez,
+# Mont-de-Marsan, Bazas, Langon, Lamotte-Montravel, Marouil, La
+# Rochefoucault, Champagne-Mouton, La Roche-Posay, La Haye-Decartes,
+# Loches, Montrichard, Vierzon, Bourges, Moulins, Digoin,
+# Paray-le-Monial, Montceau-les-Mines, Chalons-sur-Saone, Arbois,
+# Dole, Morez, St-Claude, and Collognes (Haute-Savioe).
 Rule	France	1941	only	-	May	 5	 0:00	2:00	M # Midsummer
 # Shanks says this transition occurred at Oct 6 1:00,
 # but go with Denis.Excoffier@ens.fr (1997-12-12),
@@ -870,9 +892,11 @@ Rule	France	1976	only	-	Sep	26	 1:00	0	-
 # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Europe/Paris	0:09:21 -	LMT	1891 Mar 15  0:01
-			0:09:21	-	PMT	1911 Mar 11    # Paris Mean Time
-# Shanks gives 1940 Jun 14 0:00; go with Excoffier's 14/6/40 22hUT.
+			0:09:21	-	PMT	1911 Mar 11  0:01  # Paris MT
+# Shanks gives 1940 Jun 14 0:00; go with Excoffier and Le Corre.
 			0:00	France	WE%sT	1940 Jun 14 23:00
+# Le Corre says Paris stuck with occupied-France time after the liberation;
+# go with Shanks.
 			1:00	C-Eur	CE%sT	1944 Aug 25
 			0:00	France	WE%sT	1945 Sep 16  3:00
 			1:00	France	CE%sT	1977
@@ -1047,9 +1071,16 @@ Zone Atlantic/Reykjavik	-1:27:24 -	LMT	1837
 
 # Italy
 #
+# From Paul Eggert (2001-03-06):
+# Sicily and Sardinia each had their own time zones from 1866 to 1893,
+# called ``Palermo Time'' (+0053) and ``Cagliari Time'' (+0038).
+# During World War II, German-controlled Italy used German time.
+# But these events all occurred before the 1970 cutoff,
+# so record only the time in Rome.
+#
 # From Paul Eggert (1996-05-06):
 # For Italian DST we have three sources: Shanks, Whitman, and F. Pollastri
-# <a href="http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html">
+# <a href="http://toi.iriti.cnr.it/uk/ienitlt.html">
 # Day-light Saving Time in Italy (1996-03-14)
 # </a>
 # (`FP' below), taken from an Italian National Electrotechnical Institute
@@ -1163,6 +1194,20 @@ Link	Europe/Rome	Europe/San_Marino
 # The Regulations of the Cabinet of Ministers of the Rep. of Latvia of
 # 29-Feb-2000 (#79)</a>, in Latvian for subscribers only).
 
+# <a href="http://www.rferl.org/newsline/2001/01/3-CEE/cee-030101.html">
+# From RFE/RL Newsline (2001-01-03), noted after a heads-up by Rives McDow:
+# </a>
+# The Latvian government on 2 January decided that the country will
+# institute daylight-saving time this spring, LETA reported.
+# Last February the three Baltic states decided not to turn back their
+# clocks one hour in the spring....
+# Minister of Economy Aigars Kalvitis noted that Latvia had too few
+# daylight hours and thus decided to comply with a draft European
+# Commission directive that provides for instituting daylight-saving
+# time in EU countries between 2002 and 2006. The Latvian government
+# urged Lithuania and Estonia to adopt a similar time policy, but it
+# appears that they will not do so....
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Latvia	1989	1996	-	Mar	lastSun	 2:00s	1:00	S
 Rule	Latvia	1989	1996	-	Sep	lastSun	 2:00s	0	-
@@ -1180,7 +1225,8 @@ Zone	Europe/Riga	1:36:24	-	LMT	1880
 			2:00	1:00	EEST	1989 Sep lastSun 2:00s
 			2:00	Latvia	EE%sT	1997 Jan 21
 			2:00	EU	EE%sT	2000 Feb 29
-			2:00	-	EET
+			2:00	-	EET	2001
+			2:00	EU	EE%sT
 
 # Liechtenstein
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -1205,7 +1251,7 @@ Zone	Europe/Vaduz	0:38:04 -	LMT	1894 Jun
 # as decided by the national government on Wednesday....
 # The Lithuanian government also announced plans to consider a
 # motion to give up shifting to summer time in spring, as it was
-# already done by Estonia. 
+# already done by Estonia.
 
 # From the <a href="http://www.tourism.lt/informa/ff.htm">
 # Fact File, Lithuanian State Department of Tourism
@@ -1283,6 +1329,18 @@ Zone	Europe/Malta	0:58:04 -	LMT	1893 Nov  2	# Valletta
 			1:00	EU	CE%sT
 
 # Moldova
+
+# From Paul Eggert (2001-02-11):
+# A previous version of this database followed Shanks, who writes that
+# Tiraspol switched to Moscow time on 1992-01-19 at 02:00.
+# However, this is most likely an error, as Moldova declared independence
+# on 1991-08-27 (the 1992-01-19 date is that of a Russian decree).
+# In early 1992 there was large-scale interethnic violence in the area
+# and it's possible that some Russophones continued to observe Moscow time.
+# But moldavizolit@tirastel.md and mk@tirastel.md separately reported via
+# Jesper Norgaard that as of 2001-01-24 Tiraspol was like Chisinau.
+# The Tiraspol entry has therefore been removed for now.
+
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Europe/Chisinau	1:55:20 -	LMT	1880
 			1:55	-	CMT	1918 Feb 15 # Chisinau MT
@@ -1297,15 +1355,6 @@ Zone	Europe/Chisinau	1:55:20 -	LMT	1880
 			2:00	E-Eur	EE%sT	1997
 # See Romania commentary for the guessed 1997 transition to EU rules.
 			2:00	EU	EE%sT
-Zone	Europe/Tiraspol	1:58:32	-	LMT	1880
-			1:55	-	CMT	1918 Feb 15 # Chisinau MT
-			1:44:24	-	BMT	1931 Jul 24 # Bucharest MT
-			2:00	Romania	EE%sT	1940 Aug 15
-			2:00	1:00	EEST	1941 Jul 17
-			1:00	C-Eur	CE%sT	1944 Aug 24
-			3:00	Russia	MSK/MSD	1991 Mar 31 2:00
-			2:00	Russia	EE%sT	1992 Jan 19 2:00
-			3:00	Russia	MSK/MSD
 
 # Monaco
 # Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
@@ -1580,6 +1629,13 @@ Zone Europe/Bucharest	1:44:24 -	LMT	1891 Oct
 # Moscow to Irkutsk in 1995, public air and rail transport in Russia ...
 # still follows Moscow time, no matter where in Russia it is located.
 #
+# For Grozny, Chechnya, we have the following story from
+# John Daniszewski, "Scavengers in the Rubble", Los Angeles Times (2001-02-07):
+# News--often false--is spread by word of mouth.  A rumor that it was
+# time to move the clocks back put this whole city out of sync with
+# the rest of Russia for two weeks--even soldiers stationed here began
+# enforcing curfew at the wrong time.
+#
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Europe/Kaliningrad	 1:22:00 - 	LMT	1893 Apr
 			 1:00	C-Eur	CE%sT	1945
diff --git a/timezone/leapseconds b/timezone/leapseconds
index 82a8ddf3f1..f730e489c4 100644
--- a/timezone/leapseconds
+++ b/timezone/leapseconds
@@ -1,4 +1,4 @@
-# @(#)leapseconds	7.12
+# @(#)leapseconds	7.13
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -43,3 +43,22 @@ Leap	1994	Jun	30	23:59:60	+	S
 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
+# 
+# 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
+# 
+# Paris, 11 January 2001
+# 
+# Bulletin C 21
+# 
+# To authorities responsible for the measurement and distribution of time
+# 
+# INFORMATION ON UTC - TAI
+# 
+# NO positive leap second will be introduced at the end of June 2001.
diff --git a/timezone/northamerica b/timezone/northamerica
index dbaae340eb..9266fab046 100644
--- a/timezone/northamerica
+++ b/timezone/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica	7.54
+# @(#)northamerica	7.56
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -31,9 +31,10 @@
 # Make sure you have the errata sheet; the book is somewhat useless without it.
 # It is the source for the US and Puerto Rico entries below.
 
-# From Paul Eggert (1996-06-12):
+# From Paul Eggert (2001-03-06):
 # Daylight Saving Time was first suggested as a joke by Benjamin Franklin
-# in his whimsical essay ``Turkey vs Eagle, McCauley is my Beagle'' (1784).
+# in his whimsical essay ``An Economical Project for Diminishing the Cost
+# of Light'' published in the Journal de Paris (1784-04-26).
 # Not everyone is happy with the results:
 #
 #	I don't really care how time is reckoned so long as there is some
@@ -48,6 +49,16 @@
 #	them healthy, wealthy and wise in spite of themselves.
 #
 #	-- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday
+#
+# For more about the first ten years of DST in the United States, see
+# Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html">
+# Ten years of daylight saving from the Pittsburgh standpoint
+# (Carnegie Library of Pittsburgh, 1927)</a>.
+#
+# Shanks says that DST was called "War Time" in the US in 1918 and 1919.
+# However, DST was imposed by the Standard Time Act of 1918, which
+# was the first nationwide legal time standard, and apparently
+# time was just called "Standard Time" or "Daylight Saving Time".
 
 # From Arthur David Olson:
 # US Daylight Saving Time ended on the last Sunday of *October* in 1974.
@@ -77,14 +88,8 @@
 # of surrender, all of whom interrupting the bells of Big Ben in
 # London which were to precede Mr. Atlee's speech.
 
-# From Paul Eggert (2000-10-02):
-# Shanks says that DST was called "War Time" in the US in 1919.
-# In the light of the above, this seems suspect;
-# but we have no better authority yet.
-
-
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	US	1918	1919	-	Mar	lastSun	2:00	1:00	W # War
+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	-	Aug	14	23:00u	1:00	P # Peace
@@ -174,6 +179,19 @@ Rule	US	1987	max	-	Apr	Sun>=1	2:00	1:00	D
 # 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.
+# See the file "australasia".
+
+# From Ryan Alessi of the Thousand Oaks Star (2001-02-15) via Rives McDow:
+# Brad Sherman, D-Sherman Oaks, introduced a bill in Congress on
+# Wednesday that could have California operating on Denver time as
+# early as this summer....  The options include keeping
+# daylight-saving time all year long, or setting clocks back two hours
+# -- instead of just one -- during the existing daylight-saving time.
+
 
 # US Eastern time, represented by New York
 
@@ -226,7 +244,8 @@ Zone America/Chicago	-5:50:36 -	LMT	1883 Nov 18 12:00
 #
 # Colorado, southern Idaho, far western Kansas, Montana, western
 # Nebraska, New Mexico, southwestern North Dakota, far eastern Oregon,
-# western South Dakota, far western Texas, Utah, Wyoming
+# western South Dakota, far western Texas (El Paso County, Hudspeth County,
+# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
 #
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER
 Rule	Denver	1920	1921	-	Mar	lastSun	2:00	1:00	D
@@ -376,6 +395,13 @@ Zone America/Boise	-7:44:49 -	LMT	1883 Nov 18 12:00
 # So we reluctantly put them all in a subdirectory `America/Indiana'.
 #
 # Most of EST-only Indiana last observed DST in 1970.
+
+# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn:
+# Pam Belluck reported in the New York Times (2001-01-31) that the
+# Indiana Legislature is considering a bill to adopt DST statewide.
+# Her article mentioned Vevay, whose post office observes a different
+# time zone than Danner's Hardware across the street.
+
 # 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
@@ -521,6 +547,11 @@ Zone America/Kentucky/Monticello -5:39:24 - LMT	1883 Nov 18 12:00
 #
 # This story is too entertaining to be false, so go with Howse over Shanks.
 #
+# From Paul Eggert (2001-03-06):
+# Garland (1927) writes ``Cleveland and Detroit advanced their clocks
+# one hour in 1914.''  This change is not in Shanks.  We have no more
+# info, so omit this for now.
+#
 # 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
@@ -646,7 +677,7 @@ Link	Pacific/Honolulu	HST
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Canada	1918	only	-	Apr	14	2:00	1:00	D
 Rule	Canada	1918	only	-	Oct	31	2:00	0	S
-Rule	Canada	1942	only	-	Feb	 9	2:00	1:00	D
+Rule	Canada	1942	only	-	Feb	 9	2:00	1:00	W
 Rule	Canada	1945	only	-	Sep	30	2:00	0	S
 Rule	Canada	1974	1986	-	Apr	lastSun	2:00	1:00	D
 Rule	Canada	1974	max	-	Oct	lastSun	2:00	0	S
@@ -675,13 +706,13 @@ Rule	StJohns	1920	1935	-	Oct	lastSun	23:00	0	S
 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	-	Mar	 1	0:00	1:00	W
 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	-	May	30	0:00	1:00	W
 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	-	Jul	10	0:00	1:00	W
 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	-	Jan	 1	0:00	1:00	W
 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.
@@ -765,7 +796,7 @@ 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	1942	only	-	Feb	9	2:00	1:00	W
 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
@@ -867,7 +898,7 @@ 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	26	2:00	0	S
-Rule	Winn	1942	only	-	Feb	 9	2:00	1:00	D
+Rule	Winn	1942	only	-	Feb	 9	2:00	1:00	W
 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
@@ -937,7 +968,7 @@ 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	1942	only	-	Feb	 9	2:00	1:00	W
 Rule	Regina	1945	only	-	Sep	lastSun	2:00	0	S
 Rule	Regina	1946	only	-	Apr	Sun>=8	2:00	1:00	D
 Rule	Regina	1946	only	-	Oct	Sun>=8	2:00	0	S
@@ -970,7 +1001,7 @@ 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	1942	only	-	Feb	 9	2:00	1:00	W
 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
@@ -996,7 +1027,7 @@ Zone America/Edmonton	-7:33:52 -	LMT	1906 Sep
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/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	1942	only	-	Feb	 9	2:00	1:00	W
 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
@@ -1078,7 +1109,7 @@ Zone America/Dawson_Creek -8:00:56 -	LMT	1884
 # From Paul Eggert (2000-10-02):
 # Matthews and Vincent (1998) say the following, but we lack histories
 # for these potential new Zones.
-# 
+#
 # The Canadian Forces station at Alert uses Eastern Time while the
 # handful of residents at the Eureka weather station [in the Central
 # zone] skip daylight savings.  Baffin Island, which is crossed by the
@@ -1100,6 +1131,9 @@ Zone America/Dawson_Creek -8:00:56 -	LMT	1884
 # central time, while Kugluktuk, even farther west, reverted to
 # mountain time, which they had used before the advent of Nunavut's
 # unified time zone in 1999.
+#
+# From Rives McDow (2001-01-20), quoting the Nunavut government:
+# The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
 
 # From Paul Eggert (2000-12-04):
 # Let's just keep track of the official times for now.
@@ -1109,7 +1143,7 @@ Rule	NT_YK	1918	only	-	Apr	14	2:00	1:00	D
 Rule	NT_YK	1918	only	-	Oct	27	2:00	0	S
 Rule	NT_YK	1919	only	-	May	25	2:00	1:00	D
 Rule	NT_YK	1919	only	-	Nov	 1	0:00	0	S
-Rule	NT_YK	1942	only	-	Feb	 9	2:00	1:00	D
+Rule	NT_YK	1942	only	-	Feb	 9	2:00	1:00	W
 Rule	NT_YK	1945	only	-	Sep	30	2:00	0	S
 Rule	NT_YK	1965	only	-	Apr	lastSun	0:00	2:00	DD
 Rule	NT_YK	1965	only	-	Oct	lastSun	2:00	0	S
@@ -1131,6 +1165,8 @@ Zone America/Rankin_Inlet -6:08:40 -	LMT	1884
 			-5:00	-	EST
 Zone America/Cambridge_Bay -7:00:20 -	LMT	1884
 			-7:00	NT_YK	M%sT	1999 Oct 31 2:00
+			-6:00	Canada	C%sT	2000 Oct 29 2:00
+			-5:00	-	EST	2000 Nov  5 0:00
 			-6:00	Canada	C%sT
 Zone America/Yellowknife -7:37:24 -	LMT	1884
 			-7:00	NT_YK	M%sT
@@ -1149,31 +1185,29 @@ Zone America/Dawson	-9:17:40 -	LMT	1900 Aug 20
 
 # Mexico
 
-# Gwillim Law reports this source for daylight saving time in Mexico:
-# <a href="http://www.spin.com.mx/verano/">
-# Daylight saving time * SPIN-Internet (in Spanish)
-# </a>
-# Law (2000-03-09) translates it as follows:
-#
-# Standard time effective in Mexico takes its origin in the
-# presidential decree of April 24, 1942.  The time of the 120th
-# meridian applies to the state of Baja California; of the 105th
-# meridian to the states of Baja California Sur, Sonora, Sinaloa, and
-# Nayarit; and the time of the 90th meridian to the rest of the
-# country.
-#
-# In the country, there have been several attempts made to adapt
-# standard time with the object of arriving at a better use of
-# daylight for social and economic activities.  In December, 1981 a
-# permanent time zone was decreed for the states of Campeche, Yucatan,
-# and Quintana Roo, displacing them from the 90th to the 75th
-# meridian.  This disposition was annulled on December 2, 1982.
-#
-# In 1988 a Summer Time was established for the states of Tamaulipas,
-# Nuevo Leon, Coahuila, and Durango, which meant that from the first
-# Sunday in April to the last [Sunday] of October those states
-# displaced their time from the 90th to the 75th meridian.  That
-# disposition lasted for one year.
+# From Paul Eggert (2001-03-05):
+# The Investigation and Analysis Service of the
+# Mexican Library of Congress (MLoC) has published a
+# <a href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/">
+# history of Mexican local time (in Spanish)
+# </a>.
+#
+# Here are the discrepancies between Shanks and the MLoC.
+# (In all cases we go with the MLoC.)
+# Shanks reports that Baja was at -8:00 in 1922/1923.
+# Shanks says the 1930 transition in Baja was 1930-11-16.
+# Shanks reports no DST during summer 1931.
+# Shanks reports a transition at 1032-03-30 23:00, not 1932-04-01.
+# Shanks does not report transitions for Baja in 1945 or 1948.
+# Shanks reports southern Mexico transitions on 1981-12-01, not 12-23.
+# Shanks says Quintana Roo switched to -6:00 on 1982-12-02, and to -5:00
+# on 1997-10-26 at 02:00.
+
+# From Gwillim Law (2001-02-20):
+# There are some other discrepancies between the Decrees page and the
+# tz database.  I think they can best be explained by supposing that
+# the researchers who prepared the Decrees page failed to find some of
+# the relevant documents.
 
 # From Paul Eggert (2000-07-26):
 # Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981
@@ -1223,54 +1257,91 @@ Zone America/Dawson	-9:17:40 -	LMT	1900 Aug 20
 # savings time so as to stay on the same time zone as the southern part of
 # Arizona year round.
 
-# From Jesper Norgaard (2000-12-02):
-# No changes have been implemented yet, but the new elected president
-# Vicente Fox seems to agree with his presidential candidate opponent
-# Labastida that daylight saving should not be discontinued, but maybe
-# reduced with a couple of months, e.g. starting one month later and
-# ending one month earlier:
-# http://www.reforma.com/nacional/articulo/044581/
+# From Jesper Norgaard, translating
+# <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17):
+# In Oaxaca, the 55.000 teachers from the Section 22 of the National
+# Syndicate of Education Workers, refuse to apply daylight saving each
+# year, so that the more than 10,000 schools work at normal hour the
+# whole year.
+
+# From Gwillim Law (2001-01-19):
+# <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says
+# (translated):...
+# January 17, 2000 - The Energy Secretary, Ernesto Martens, announced
+# that Summer Time will be reduced from seven to five months, starting
+# this year....
+# <http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001>
+# [translated], says "summer time will ... take effect on the first Sunday
+# in May, and end on the last Sunday of September.
+
+# From Arthur David Olson (2001-01-25):
+# The 2001-01-24 traditional Washington Post contained the page one
+# story "Timely Issue Divides Mexicans."...
+# http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html
+# ... Mexico City Mayor Lopez Obrador "...is threatening to keep
+# Mexico City and its 20 million residents on a different time than
+# the rest of the country..." In particular, Lopez Obrador would abolish
+# observation of Daylight Saving Time.
+
+# <a href="http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre">
+# Official statute published by the Energy Department
+# </a> (2001-02-01) shows Baja and Chihauhua as still using US DST rules,
+# and Sonora with no DST.  This was reported by Jesper Norgaard (2001-02-03).
+
+# From Paul Eggert (2001-03-03):
+#
+# <a href="http://www.latimes.com/news/nation/20010303/t000018766.html">
+# James F. Smith writes in today's LA Times
+# </a>
+# * Sonora will continue to observe standard time.
+# * Border states including Baja California, Chihuahua, and Nuevo Leon
+#   will use US rules,
+# * Last week Mexico City's mayor Andres Manuel Lopez Obrador decreed that
+#   the Federal District will not adopt DST.
+# * 4 of 16 district leaders announced they'll ignore the decree.
+# * The decree does not affect federal-controlled facilities including
+#   the airport, banks, hospitals, and schools.
+#
+# For now we'll assume that the Federal District will bow to federal rules
+# and that border states and Durango will stick with US rules.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/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	1943	only	-	Dec	16	0:00	1:00	W
 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	Mexico	1996	max	-	Apr	Sun>=1	2:00	1:00	D
-Rule	Mexico	1996	max	-	Oct	lastSun	2:00	0	S
-#
-Rule	BajaN	1954	1961	-	Apr	lastSun	2:00	1:00	D
-Rule	BajaN	1954	1961	-	Sep	lastSun	2:00	0	S
+Rule	Mexico	1996	2000	-	Apr	Sun>=1	2:00	1:00	D
+Rule	Mexico	1996	2000	-	Oct	lastSun	2:00	0	S
+Rule	Mexico	2001	max	-	May	Sun>=1	2:00	1:00	D
+Rule	Mexico	2001	max	-	Sep	lastSun	2:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 # Quintana Roo
 Zone America/Cancun	-5:47:04 -	LMT	1922 Jan  1  0:12:56
-			-6:00	-	CST	1981 Dec
-			-5:00	-	EST	1982 Dec  2
-			-6:00	-	CST	1996
-			-6:00	Mexico	C%sT	1997 Oct lastSun 2:00
+			-6:00	-	CST	1981 Dec 23
 			-5:00	Mexico	E%sT	1998 Aug  2  2:00
 			-6:00	Mexico	C%sT
 # Campeche, Yucatan
 Zone America/Merida	-5:58:28 -	LMT	1922 Jan  1  0:01:32
-			-6:00	-	CST	1981 Dec
+			-6:00	-	CST	1981 Dec 23
 			-5:00	-	EST	1982 Dec  2
 			-6:00	Mexico	C%sT
 # Coahuila, Durango, Nuevo Leon, Tamaulipas
-Zone America/Monterrey	-6:41:16 -	LMT	1922 Jan  1  0:01:32
+Zone America/Monterrey	-6:41:16 -	LMT	1921 Dec 31 23:18:44
 			-6:00	-	CST	1988
 			-6:00	US	C%sT	1989
-			-6:00	Mexico	C%sT
+			-6:00	Mexico	C%sT	2001
+			-6:00	US	C%sT
 # Central Mexico
 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
+			-7:00	-	MST	1932 Apr  1
 			-6:00	Mexico	C%sT
 # Chihuahua
 Zone America/Chihuahua	-7:04:20 -	LMT	1921 Dec 31 23:55:40
@@ -1278,18 +1349,19 @@ Zone America/Chihuahua	-7:04:20 -	LMT	1921 Dec 31 23:55:40
 			-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
+			-7:00	-	MST	1932 Apr  1
 			-6:00	-	CST	1996
 			-6:00	Mexico	C%sT	1998
 			-6:00	-	CST	1998 Apr Sun>=1 3:00
-			-7:00	Mexico	M%sT
+			-7:00	Mexico	M%sT	2001
+			-7:00	US	M%sT
 # Sonora
 Zone America/Hermosillo	-7:23:52 -	LMT	1921 Dec 31 23:36:08
 			-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
+			-7:00	-	MST	1932 Apr  1
 			-6:00	-	CST	1942 Apr 24
 			-7:00	-	MST	1949 Jan 14
 			-8:00	-	PST	1970
@@ -1301,20 +1373,38 @@ Zone America/Mazatlan	-7:05:40 -	LMT	1921 Dec 31 23:54:20
 			-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
+			-7:00	-	MST	1932 Apr  1
 			-6:00	-	CST	1942 Apr 24
 			-7:00	-	MST	1949 Jan 14
 			-8:00	-	PST	1970
 			-7:00	Mexico	M%sT
 # Baja California
 Zone America/Tijuana	-7:48:04 -	LMT	1922 Jan  1  0:11:56
+			-7:00	-	MST	1924
 			-8:00	-	PST	1927 Jun 10 23:00
-			-7:00	-	MST	1930 Nov 16
+			-7:00	-	MST	1930 Nov 15
+			-8:00	-	PST	1931 Apr  1
+			-8:00	1:00	PDT	1931 Sep 30
 			-8:00	-	PST	1942 Apr 24
-			-7:00	-	MST	1949 Jan 14
-			-8:00	BajaN	P%sT	1976
+			-8:00	1:00	PWT	1945 Nov 12
+			-8:00	-	PST	1948 Apr  5
+			-8:00	1:00	PDT	1949 Jan 14
+			-8:00	-	PST	1954
+			-8:00	CA	P%sT	1961
+			-8:00	-	PST	1976
 			-8:00	US	P%sT	1996
-			-8:00	Mexico	P%sT
+			-8:00	Mexico	P%sT	2001
+			-8:00	US	P%sT
+# From Paul Eggert (2001-03-05):
+# Formerly there was an America/Ensenada zone, which differed from
+# America/Tijuana only in that it did not observe DST from 1976
+# through 1995.  This was as per Shanks.  However, Guy Harris reports
+# that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and
+# Tijuana observe DST," which contradicts Shanks but does imply that
+# DST-observance was a town-by-town matter back then.  This concerns
+# data after 1970 so most likely there should be at least one Zone
+# other than America/Tijuana for Baja, but it's not clear yet what its
+# name or contents should be.
 #
 # Revillagigedo Is
 # no information
diff --git a/timezone/southamerica b/timezone/southamerica
index 643ac5e10b..b51e7cfd50 100644
--- a/timezone/southamerica
+++ b/timezone/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.38
+# @(#)southamerica	7.40
 
 # 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
@@ -474,8 +474,7 @@ Zone America/Eirunepe	-4:39:28 -	LMT	1914
 			-5:00	-	ACT
 #
 # Acre (AC)
-# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too.
-Zone America/Porto_Acre	-4:31:12 -	LMT	1914
+Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 			-5:00	Brazil	AC%sT	1988 Sep 12
 			-5:00	-	ACT
 
@@ -494,17 +493,29 @@ Zone America/Porto_Acre	-4:31:12 -	LMT	1914
 # Because of the same drought, the government decided to end DST later,
 # on April 3, (one-time change).
 
+# From Gwillim Law (2001-02-20):
+# I came across a Chilean on-line newspaper, La Tercera.  Its
+# <a href="http://www.tercera.cl/diario/1998/03/13/extras.html">
+# 1998-03-13 issue
+# </a>, says (my translation):
+# "At 24:00 (midnight) tomorrow (Saturday) - 22:00 in the insular
+# territory [Easter Island, Juan Fernandez, etc.] - winter time will
+# begin in the entire country."
+
+# From Paul Eggert (2001-02-21):
+# Assume this rule has been used since DST was introduced in the islands.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Chile	1918	only	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1919	only	-	Jul	 2	0:00	0	-
 Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
-Rule	Chile	1969	1997	-	Oct	Sun>=9	0:00	1:00	S
-Rule	Chile	1970	1998	-	Mar	Sun>=9	0:00	0	-
-Rule	Chile	1998	only	-	Sep	27	0:00	1:00	S
-Rule	Chile	1999	only	-	Apr	 4	0:00	0	-
-Rule	Chile	1999	max	-	Oct	Sun>=9	0:00	1:00	S
-Rule	Chile	2000	max	-	Mar	Sun>=9	0:00	0	-
+Rule	Chile	1969	1997	-	Oct	Sun>=9	4:00u	1:00	S
+Rule	Chile	1970	1998	-	Mar	Sun>=9	3:00u	0	-
+Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S
+Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-
+Rule	Chile	1999	max	-	Oct	Sun>=9	4:00u	1:00	S
+Rule	Chile	2000	max	-	Mar	Sun>=9	3:00u	0	-
 # IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14;
 # (1996-09) says 1998-03-08.  Ignore these.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -555,6 +566,56 @@ Zone Pacific/Galapagos	-5:58:24 -	LMT	1931 # Puerto Baquerizo Moreno
 			-6:00	-	GALT	     # Galapagos Time
 
 # Falklands
+
+# From Paul Eggert (2001-03-05):
+# Between 1990 and 2000 inclusive, Shanks and the IATA agree except
+# the IATA gives 1996-09-08.  Go with Shanks.
+
+# From Falkland Islands Government Office, London (2001-01-22)
+# via Jesper Norgaard:
+# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
+# April 2001 and advance one hour to summer time at 2 am on Sunday 2
+# September.  It is anticipated that the clocks will revert back at 2
+# am on Sunday 21 April 2002 and advance to summer time at 2 am on
+# Sunday 1 September.
+
+# From Rives McDow (2001-02-13):
+#
+# I have communicated several times with people there, and the last
+# time I had communications that was helpful was in 1998.  Here is
+# what was said then:
+#
+# "The general rule was that Stanley used daylight saving and the Camp
+# did not. However for various reasons many people in the Camp have
+# started to use daylight saving (known locally as 'Stanley Time')
+# There is no rule as to who uses daylight saving - it is a matter of
+# personal choice and so it is impossible to draw a map showing who
+# uses it and who does not. Any list would be out of date as soon as
+# it was produced. This year daylight saving ended on April 18/19th
+# and started again on September 12/13th.  I do not know what the rule
+# is, but can find out if you like.  We do not change at the same time
+# as UK or Chile."
+#
+# I did have in my notes that the rule was "Second Saturday in Sep at
+# 0:00 until third Saturday in Apr at 0:00".  I think that this does
+# not agree in some cases with Shanks; is this true?
+#
+# Also, there is no mention in the list that some areas in the
+# Falklands do not use DST.  I have found in my communications there
+# that these areas are on the western half of East Falkland and all of
+# West Falkland.  Stanley is the only place that consistently observes
+# DST.  Again, as in other places in the world, the farmers don't like
+# it.  West Falkland is almost entirely sheep farmers.
+#
+# I know one lady there that keeps a list of which farm keeps DST and
+# which doesn't each year.  She runs a shop in Stanley, and says that
+# the list changes each year.  She uses it to communicate to her
+# customers, catching them when they are home for lunch or dinner.
+
+# From Paul Eggert (2001-03-05):
+# For now, we'll just record the time in Stanley, since we have no
+# better info.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Falk	1937	1938	-	Sep	lastSun	0:00	1:00	S
 Rule	Falk	1938	1942	-	Mar	Sun>=19	0:00	0	-
@@ -564,9 +625,10 @@ Rule	Falk	1943	only	-	Jan	1	0:00	0	-
 Rule	Falk	1983	only	-	Sep	lastSun	0:00	1:00	S
 Rule	Falk	1984	1985	-	Apr	lastSun	0:00	0	-
 Rule	Falk	1984	only	-	Sep	16	0:00	1:00	S
-Rule	Falk	1985	1995	-	Sep	Sun>=9	0:00	1:00	S
-Rule	Falk	1986	max	-	Apr	Sun>=16	0:00	0	-
-Rule	Falk	1996	max	-	Sep	Sun>=8	0:00	1:00	S
+Rule	Falk	1985	2000	-	Sep	Sun>=9	0:00	1:00	S
+Rule	Falk	1986	2000	-	Apr	Sun>=16	0:00	0	-
+Rule	Falk	2001	max	-	Apr	Sun>=15	2:00	0	-
+Rule	Falk	2001	max	-	Sep	Sun>=1	2:00	1:00	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Atlantic/Stanley	-3:51:24 -	LMT	1890
 			-3:51:24 -	SMT	1912 Mar 12  # Stanley Mean Time
@@ -607,19 +669,32 @@ Rule	Para	1993	only	-	Mar	31	0:00	0	-
 Rule	Para	1993	1995	-	Oct	 1	0:00	1:00	S
 Rule	Para	1994	1995	-	Feb	lastSun	0:00	0	-
 Rule	Para	1996	only	-	Mar	 1	0:00	0	-
-# IATA SSIM (1997-09) says Mar 1; go with Shanks.
-Rule	Para	1997	only	-	Feb	lastSun	0:00	0	-
-Rule	Para	1998	only	-	Mar	 1	0:00	0	-
-Rule	Para	1996	1998	-	Oct	Sun>=1	0:00	1:00	S
-# IATA SSIM (1999-02) says lastSat, not lastSun; (1999-09) reports no date;
-# go with Shanks.
-Rule	Para	1999	max	-	Feb	lastSun	0:00	0	-
-# IATA SSIM (2000-02) says 1999-10-10.
-Rule	Para	1999	only	-	Oct	10	0:00	1:00	S
+# IATA SSIM (2000-02) says 1999-10-10; ignore this for now.
 # From Steffen Thorsen (2000-10-02):
 # I have three independent reports that Paraguay changed to DST this Sunday
 # (10-01).
-Rule	Para	2000	max	-	Oct	Sun>=1	0:00	1:00	S
+#
+# Translated by Gwillim Law (2001-02-27) from
+# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm">
+# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01)
+# </a>:
+# Starting at 0:00 today, the clock will be set forward 60 minutes, in
+# fulfillment of Decree No. 7,273 of the Executive Power....  The time change
+# system has been operating for several years.  Formerly there was a separate
+# decree each year; the new law has the same effect, but permanently.  Every
+# year, the time will change on the first Sunday of October; likewise, the
+# clock will be set back on the first Sunday of March.
+#
+# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]:
+# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592
+#
+Rule	Para	1996	max	-	Oct	Sun>=1	0:00	1:00	S
+# IATA SSIM (1997-09) says Mar 1; go with Shanks.
+Rule	Para	1997	only	-	Feb	lastSun	0:00	0	-
+# Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but
+# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).
+Rule	Para	1998	max	-	Mar	Sun>=1	0:00	0	-
+
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Asuncion	-3:50:40 -	LMT	1890
 			-3:50:40 -	AMT	1931 Oct 10 # Asuncion Mean Time
diff --git a/timezone/systemv b/timezone/systemv
index a6f79d231a..c6a6b6404b 100644
--- a/timezone/systemv
+++ b/timezone/systemv
@@ -1,35 +1,50 @@
-# @(#)systemv	7.2
+# @(#)systemv	7.3
 
 # Old rules, should the need arise.
 # No attempt is made to handle Newfoundland, since it cannot be expressed
 # using the System V "TZ" scheme (half-hour offset), or anything outside
 # North America (no support for non-standard DST start/end dates), nor
-# the change in the DST rules in the US in 1987 (can't split between
-# Canada, with no changes, and the US)
+# the change in the DST rules in the US in 1987 (which occurred before
+# the old rules were written).
 #
-# Be sure to compile this *without* leap second correction for true conformance.
+# If you need the old rules, uncomment ## lines and comment-out Link lines.
+# Compile this *without* leap second correction for true conformance.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
-Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
-Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
-Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
-Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
-Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
-Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
-Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
+## Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
+## Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
+## Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
+## Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
+## Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
 
 # Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
-Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
-Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
-Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
-Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
-Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
-Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
-Zone	SystemV/AST4	-4:00	-		AST
-Zone	SystemV/EST5	-5:00	-		EST
-Zone	SystemV/CST6	-6:00	-		CST
-Zone	SystemV/MST7	-7:00	-		MST
-Zone	SystemV/PST8	-8:00	-		PST
-Zone	SystemV/YST9	-9:00	-		YST
-Zone	SystemV/HST10	-10:00	-		HST
+## Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
+## Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
+## Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
+## Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
+## Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
+## Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
+## Zone	SystemV/AST4	-4:00	-		AST
+## Zone	SystemV/EST5	-5:00	-		EST
+## Zone	SystemV/CST6	-6:00	-		CST
+## Zone	SystemV/MST7	-7:00	-		MST
+## Zone	SystemV/PST8	-8:00	-		PST
+## Zone	SystemV/YST9	-9:00	-		YST
+## Zone	SystemV/HST10	-10:00	-		HST
+# For now...
+Link	America/Halifax		SystemV/AST4ADT
+Link	America/New_York	SystemV/EST5EDT
+Link	America/Chicago		SystemV/CST6CDT
+Link	America/Denver		SystemV/MST7MDT
+Link	America/Los_Angeles	SystemV/PST8PDT
+Link	America/Anchorage	SystemV/YST9YDT
+Link	America/Puerto_Rico	SystemV/AST4
+Link	America/Indianapolis	SystemV/EST5
+Link	America/Regina		SystemV/CST6
+Link	America/Phoenix		SystemV/MST7
+Link	Pacific/Pitcairn	SystemV/PST8
+Link	Pacific/Gambier		SystemV/YST9
+Link	Pacific/Honolulu	SystemV/HST10
diff --git a/timezone/yearistype b/timezone/yearistype
index 62d6365ecd..8d796f1f21 100755
--- a/timezone/yearistype
+++ b/timezone/yearistype
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-: '@(#)yearistype.sh	7.6'
+: '@(#)yearistype.sh	7.7'
 
 case $#-$1 in
 	2-|2-0*|2-*[!0-9]*)
@@ -34,3 +34,4 @@ case $#-$2 in
 esac
 
 echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2
+exit 1
diff --git a/timezone/zdump.c b/timezone/zdump.c
index 45b97c4d62..cc27d758fb 100644
--- a/timezone/zdump.c
+++ b/timezone/zdump.c
@@ -1,6 +1,6 @@
 #ifndef lint
 #ifndef NOID
-static char	elsieid[] = "@(#)zdump.c	7.28";
+static char	elsieid[] = "@(#)zdump.c	7.29";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -264,9 +264,8 @@ _("%s: usage is %s [ -v ] [ -c cutoff ] zonename ...\n"),
 		show(argv[i], t, TRUE);
 	}
 	if (fflush(stdout) || ferror(stdout)) {
-		(void) fprintf(stderr, _("%s: Error writing "),
-			argv[0]);
-		(void) perror(_("standard output"));
+		(void) fprintf(stderr, "%s: ", argv[0]);
+		(void) perror(_("Error writing standard output"));
 		(void) exit(EXIT_FAILURE);
 	}
 	exit(EXIT_SUCCESS);
diff --git a/timezone/zone.tab b/timezone/zone.tab
index e4e11802b0..c28904e6bc 100644
--- a/timezone/zone.tab
+++ b/timezone/zone.tab
@@ -1,4 +1,4 @@
-# @(#)zone.tab	1.21
+# @(#)zone.tab	1.22
 #
 # TZ zone descriptions
 #
@@ -37,6 +37,7 @@ AQ	-6448-06406	Antarctica/Palmer	Palmer Station, Anvers Island
 AQ	-6736+06253	Antarctica/Mawson	Mawson Station, Holme Bay
 AQ	-6835+07758	Antarctica/Davis	Davis Station, Vestfold Hills
 AQ	-6617+11031	Antarctica/Casey	Casey Station, Bailey Peninsula
+AQ	-7824+10654	Antarctica/Vostok	Vostok Station, S Magnetic Pole
 AQ	-6640+14001	Antarctica/DumontDUrville	Dumont-d'Urville Base, Terre Adelie
 AQ	-690022+0393524	Antarctica/Syowa	Syowa Station, E Ongul I
 AR	-3436-05827	America/Buenos_Aires	E Argentina (BA, DF, SC, TF)
@@ -51,7 +52,7 @@ AU	-3133+15905	Australia/Lord_Howe	Lord Howe Island
 AU	-4253+14719	Australia/Hobart	Tasmania
 AU	-3749+14458	Australia/Melbourne	Victoria
 AU	-3352+15113	Australia/Sydney	New South Wales - most locations
-AU	-3157+14127	Australia/Broken_Hill	New South Wales - Broken Hill
+AU	-3157+14127	Australia/Broken_Hill	New South Wales - Yancowinna
 AU	-2728+15302	Australia/Brisbane	Queensland - most locations
 AU	-2016+14900	Australia/Lindeman	Queensland - Holiday Islands
 AU	-3455+13835	Australia/Adelaide	South Australia
@@ -83,7 +84,7 @@ BR	-0846-06354	America/Porto_Velho	W Para, Rondonia
 BR	+0249-06040	America/Boa_Vista	Roraima
 BR	-0308-06001	America/Manaus	E Amazonas
 BR	-0640-06952	America/Eirunepe	W Amazonas
-BR	-0934-06731	America/Porto_Acre	Acre
+BR	-0958-06748	America/Rio_Branco	Acre
 BS	+2505-07721	America/Nassau
 BT	+2728+08939	Asia/Thimphu
 BW	-2545+02555	Africa/Gaborone
@@ -227,8 +228,7 @@ LV	+5657+02406	Europe/Riga
 LY	+3254+01311	Africa/Tripoli
 MA	+3339-00735	Africa/Casablanca
 MC	+4342+00723	Europe/Monaco
-MD	+4700+02850	Europe/Chisinau	most locations
-MD	+4651+02938	Europe/Tiraspol	Transdniestria
+MD	+4700+02850	Europe/Chisinau
 MG	-1855+04731	Indian/Antananarivo
 MH	+0709+17112	Pacific/Majuro	most locations
 MH	+0905+16720	Pacific/Kwajalein	Kwajalein