Update.

2001-10-14  Ulrich Drepper  <drepper@redhat.com>

	* locale/programs/ld-collate.c (handle_ellipsis): Use %lX not %lx
	to generate hexadecimal identifier.
	Patch by Jungshik Shin <jungshik.shin@yale.edu>.

2001-10-09  Stephen L Moshier  <moshier@mediaone.net>

	* sysdeps/ieee754/ldbl-96/s_cbrtl.c (__cbrtl): Fix algorithm.

2001-10-14  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/ieee754/ldbl-128/e_powl.c: New file.
	* sysdeps/ieee754/ldbl-128/s_cbrtl.c: New file.
	Contributed by Stephen L Moshier <moshier@mediaone.net>.

	* sysdeps/ieee754/ldbl-128/e_j0l.c: Constify float variables.
	* sysdeps/ieee754/ldbl-128/e_j1l.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_lgammal_r.c: Likewise
	* sysdeps/ieee754/ldbl-128/s_erfl.c: Likewise
	* sysdeps/ieee754/ldbl-128/s_expm1l.c: Likewise
	* sysdeps/ieee754/ldbl-128/s_log1pl.c: Likewise

	* timezone/africa: Update from tzdata2001d.
	* timezone/asia: Likewise.
	* timezone/australasia: Likewise.
	* timezone/backward: Likewise.
	* timezone/europe: Likewise.
	* timezone/leapseconds: Likewise.
	* timezone/northamerica: Likewise.
	* timezone/southamerica: Likewise.
	* timezone/zone.tab: Likewise.

2001-10-09  Martin Schwidefsky  <schwidefsky@de.ibm.com>

	* sysdeps/s390/s390-32/sys/ucontext.h: Correct __psw_t typedef.
	* sysdeps/s390/s390-64/sys/ucontext.h: Likewise.

9 files changed, 415 insertions, 93 deletions

diff --git a/timezone/africa b/timezone/africa
index 80b29d3348..e8223f78f5 100644
--- a/timezone/africa
+++ b/timezone/africa
@@ -1,4 +1,4 @@
-# @(#)africa	7.35
+# @(#)africa	7.36
 
 # 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
@@ -10,7 +10,7 @@
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -55,7 +55,7 @@
 # I invented the following abbreviations; corrections are welcome!
 #	 2:00	WAST	West Africa Summer Time
 #	 2:30	BEAT	British East Africa Time (no longer used)
-#	 2:45	BEAUT	British East Africa Unified Time (no longer used)
+#	 2:44:45 BEAUT	British East Africa Unified Time (no longer used)
 #	 3:00	CAST	Central Africa Summer Time (no longer used)
 #	 3:00	SAST	South Africa Summer Time (no longer used)
 #	 3:00	EAT	East Africa Time
@@ -101,7 +101,7 @@ Zone	Africa/Algiers	0:12:12 -	LMT	1891 Mar 15 0:01
 # Angola
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Luanda	0:52:56	-	LMT	1892
-			0:52:04	-	LMT	1911 May 26 # Luanda Mean Time?
+			0:52:04	-	AOT	1911 May 26 # Angola Time
 			1:00	-	WAT
 
 # Benin
@@ -276,7 +276,7 @@ Zone	Africa/Bissau	-1:02:20 -	LMT	1911 May 26
 Zone	Africa/Nairobi	2:27:16	-	LMT	1928 Jul
 			3:00	-	EAT	1930
 			2:30	-	BEAT	1940
-			2:45	-	BEAUT	1960
+			2:44:45	-	BEAUT	1960
 			3:00	-	EAT
 
 # Lesotho
@@ -287,9 +287,9 @@ Zone	Africa/Maseru	1:50:00 -	LMT	1903 Mar
 			2:00	-	SAST
 
 # Liberia
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
+# From Paul Eggert <eggert@twinsun.com> (2001-07-17):
 # In 1972 Liberia was the last country to switch
-# from a UTC offset that was not a multiple of 15 minutes.
+# from a UTC offset that was not a multiple of 15 or 20 minutes.
 # Howse reports that it was in honor of their president's birthday.
 # Shanks reports the date as May 1, whereas Howse reports Jan; go with Shanks.
 # For Liberia before 1972, Shanks reports -0:44, whereas Howse and Whitman
@@ -548,7 +548,7 @@ Zone	Africa/Mbabane	2:04:24 -	LMT	1903 Mar
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Dar_es_Salaam 2:37:08 -	LMT	1931
 			3:00	-	EAT	1948
-			2:45	-	BEAUT	1961
+			2:44:45	-	BEAUT	1961
 			3:00	-	EAT
 
 # Togo
@@ -591,7 +591,7 @@ Zone	Africa/Tunis	0:40:44 -	LMT	1881 May 12
 Zone	Africa/Kampala	2:09:40 -	LMT	1928 Jul
 			3:00	-	EAT	1930
 			2:30	-	BEAT	1948
-			2:45	-	BEAUT	1957
+			2:44:45	-	BEAUT	1957
 			3:00	-	EAT
 
 # Zambia
diff --git a/timezone/asia b/timezone/asia
index 2f57467851..0d58ca96e8 100644
--- a/timezone/asia
+++ b/timezone/asia
@@ -1,4 +1,4 @@
-# @(#)asia	7.64
+# @(#)asia	7.65
 
 # 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
@@ -10,7 +10,7 @@
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -210,7 +210,7 @@ Zone	Asia/Harbin	8:26:44	-	LMT	1928 # or Haerbin
 Zone	Asia/Shanghai	8:05:52	-	LMT	1928
 			8:00	Shang	C%sT	1949
 			8:00	PRC	C%sT
-Zone	Asia/Chungking	7:06:20	-	LMT	1928 # or Chongqing
+Zone	Asia/Chongqing	7:06:20	-	LMT	1928 # or Chungking
 			7:00	-	CHUT	1980 May # Chungking Time
 			8:00	PRC	C%sT
 Zone	Asia/Urumqi	5:50:20	-	LMT	1928 # or Urumchi
@@ -263,7 +263,7 @@ Rule	Taiwan	1974	1975	-	Oct	1	0:00	0	S
 Rule	Taiwan	1980	only	-	Jun	30	0:00	1:00	D
 Rule	Taiwan	1980	only	-	Sep	30	0:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Asia/Taipei	8:06:00 -	LMT	1896
+Zone	Asia/Taipei	8:06:00 -	LMT	1896 # or Taibei or T'ai-pei
 			8:00	Taiwan	C%sT
 
 # Macao (Macau, Aomen)
@@ -932,9 +932,11 @@ Zone	Asia/Beirut	2:22:00 -	LMT	1880
 
 # Malaysia
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	NBorneo	1935	1941	-	Sep	14	0:00	0:20	TS
+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
@@ -943,6 +945,7 @@ Zone Asia/Kuala_Lumpur	6:46:48 -	LMT	1880
 			7:20	-	MALT	1950
 			7:30	-	MALT	1982 May
 			8:00	-	MYT	# Malaysia Time
+# Sabah & Sarawak
 Zone Asia/Kuching	7:21:20	-	LMT	1926 Mar
 			7:30	-	BORT	1933	# Borneo Time
 			8:00	NBorneo	BOR%sT	1942
@@ -1022,11 +1025,10 @@ Zone	Asia/Ulaanbaatar 7:07:32 -	LMT	1905 Aug
 			8:00	Mongol	ULA%sT
 # Choibalsan, a.k.a. Bajan Tuemen, Bajan Tumen, Chojbalsan,
 # Choybalsan, Sanbejse, Tchoibalsan
-# We're still not sure about this data, so we'll omit it for now.
-#Zone	Asia/Choibalsan	7:38:00 -	LMT	1905 Aug
-#			7:00	-	ULAT	1978
-#			8:00	Mongol	ULA%sT	1983 Apr
-#			9:00	Mongol	CHO%sT	# Choibalsan Time
+Zone	Asia/Choibalsan	7:38:00 -	LMT	1905 Aug
+			7:00	-	ULAT	1978
+			8:00	-	ULAT	1983 Apr
+			9:00	Mongol	CHO%sT	# Choibalsan Time
 
 # Nepal
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
diff --git a/timezone/australasia b/timezone/australasia
index fe01a3e15c..c30ea37503 100644
--- a/timezone/australasia
+++ b/timezone/australasia
@@ -1,4 +1,4 @@
-# @(#)australasia	7.64
+# @(#)australasia	7.65
 # This file also includes Pacific islands.
 
 # Notes are at the end of this file
@@ -7,6 +7,8 @@
 
 # Australia
 
+# Please see the notes below for the controversy about "EST" versus "AEST" etc.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Aus	1917	only	-	Jan	 1	0:01	1:00	-
 Rule	Aus	1917	only	-	Mar	25	2:00	0	-
@@ -359,7 +361,7 @@ Zone Pacific/Palau	8:57:56 -	LMT	1901		# Koror
 # Papua New Guinea
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Pacific/Port_Moresby 9:48:40 -	LMT	1880
-			9:48:40	-	PMMT	1895	# Port Moresby Mean Time
+			9:48:32	-	PMMT	1895	# Port Moresby Mean Time
 			10:00	-	PGT		# Papua New Guinea Time
 
 # Pitcairn
@@ -399,6 +401,8 @@ Rule	Tonga	1999	only	-	Oct	 7	2:00s	1:00	S
 Rule	Tonga	2000	only	-	Mar	19	2:00s	0	-
 Rule	Tonga	2000	only	-	Nov	 4	2:00s	1:00	S
 Rule	Tonga	2001	only	-	Jan	27	2:00s	0	-
+Rule	Tonga	2001	only	-	Nov	25	2:00s	1:00	S
+Rule	Tonga	2002	only	-	Mar	 3	2:00s	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Pacific/Tongatapu	12:19:20 -	LMT	1901
 			12:20	-	TOT	1941 # Tonga Time
@@ -473,7 +477,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -535,12 +539,93 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # prefixed by the word `Australian' when referring to local times;
 # time announcements on that service, naturally enough, are made in UTC.
 
-# From Arthur David Olson (March 8 1992):
+# From Arthur David Olson (1992-03-08):
 # Given the above, what's chosen for year-round use is:
 #	CST	for any place operating at a GMTOFF of 9:30
 #	WST	for any place operating at a GMTOFF of 8:00
 #	EST	for any place operating at a GMTOFF of 10:00
 
+# From Paul Eggert (2001-04-05), summarizing a long discussion about "EST"
+# versus "AEST" etc.:
+#
+# I see the following points of dispute:
+#
+# * How important are unique time zone abbreviations?
+#
+#   Here I tend to agree with the point (most recently made by Chris
+#   Newman) that unique abbreviations should not be essential for proper
+#   operation of software.  We have other instances of ambiguity
+#   (e.g. "IST" denoting both "Israel Standard Time" and "Indian
+#   Standard Time"), and they are not likely to go away any time soon.
+#   In the old days, some software mistakenly relied on unique
+#   abbreviations, but this is becoming less true with time, and I don't
+#   think it's that important to cater to such software these days.
+#
+#   On the other hand, there is another motivation for unambiguous
+#   abbreviations: it cuts down on human confusion.  This is
+#   particularly true for Australia, where "EST" can mean one thing for
+#   time T and a different thing for time T plus 1 second.
+#
+# * Does the relevant legislation indicate which abbreviations should be used?
+#
+#   Here I tend to think that things are a mess, just as they are in
+#   many other countries.  We Americans are currently disagreeing about
+#   which abbreviation to use for the newly legislated Chamorro Standard
+#   Time, for example.
+#
+#   Personally, I would prefer to use common practice; I would like to
+#   refer to legislation only for examples of common practice, or as a
+#   tiebreaker.
+#
+# * Do Australians more often use "Eastern Daylight Time" or "Eastern
+#   Summer Time"?  Do they typically prefix the time zone names with
+#   the word "Australian"?
+#
+#   My own impression is that both "Daylight Time" and "Summer Time" are
+#   common and are widely understood, but that "Summer Time" is more
+#   popular; and that the leading "A" is also common but is omitted more
+#   often than not.  I just used AltaVista advanced search and got the
+#   following count of page hits:
+#
+#     1,103 "Eastern Summer Time" AND domain:au
+#       971 "Australian Eastern Summer Time" AND domain:au
+#       613 "Eastern Daylight Time" AND domain:au
+#       127 "Australian Eastern Daylight Time" AND domain:au
+#
+#   Here "Summer" seems quite a bit more popular than "Daylight",
+#   particularly when we know the time zone is Australian and not US,
+#   say.  The "Australian" prefix seems to be popular for Eastern Summer
+#   Time, but unpopular for Eastern Daylight Time.
+#
+#   For abbreviations, tools like AltaVista are less useful because of
+#   ambiguity.  Many hits are not really time zones, unfortunately, and
+#   many hits denote US time zones and not Australian ones.  But here
+#   are the hit counts anyway:
+#
+#     161,304 "EST" and domain:au
+#      25,156 "EDT" and domain:au
+#      18,263 "AEST" and domain:au
+#      10,416 "AEDT" and domain:au
+#
+#      14,538 "CST" and domain:au
+#       5,728 "CDT" and domain:au
+#         176 "ACST" and domain:au
+#          29 "ACDT" and domain:au
+#
+#       7,539 "WST" and domain:au
+#          68 "AWST" and domain:au
+#
+#   This data suggest that Australians tend to omit the "A" prefix in
+#   practice.  The situation for "ST" versus "DT" is less clear, given
+#   the ambiguities involved.
+#
+# * How do Australians feel about the abbreviations in the tz database?
+#
+#   If you just count Australians on this list, I count 2 in favor and 3
+#   against.  One of the "against" votes (David Keegel) counseled delay,
+#   saying that both AEST/AEDT and EST/EST are widely used and
+#   understood in Australia.
+
 # From Paul Eggert (1995-12-19):
 # Shanks reports 2:00 for all autumn changes in Australia and New Zealand.
 # Mark Prior <mrp@itd.adelaide.edu.au> writes that his newspaper
@@ -756,6 +841,28 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # #   The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ]
 # #						[ Nov 1990 ]
 
+# From Scott Harrington (2001-08-29):
+# On KQED's "City Arts and Lectures" program last night I heard an
+# interesting story about daylight savings time.  Dr. John Heilbron was
+# discussing his book "The Sun in the Church: Cathedrals as Solar
+# Observatories"[1], and in particular the Shrine of Remembrance[2] located
+# in Melbourne, Australia.
+#
+# Apparently the shrine's main purpose is a beam of sunlight which
+# illuminates a special spot on the floor at the 11th hour of the 11th day
+# of the 11th month (Remembrance Day) every year in memory of Australia's
+# fallen WWI soldiers.  And if you go there on Nov. 11, at 11am local time,
+# you will indeed see the sunbeam illuminate the special spot at the
+# expected time.
+#
+# However, that is only because of some special mirror contraption that had
+# to be employed, since due to daylight savings time, the true solar time of
+# the remembrance moment occurs one hour later (or earlier?).  Perhaps
+# someone with more information on this jury-rig can tell us more.
+#
+# [1] http://www.hup.harvard.edu/catalog/HEISUN.html
+# [2] http://www.shrine.org.au
+
 # New South Wales
 
 # From Arthur David Olson:
@@ -1120,6 +1227,12 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # From Rives McDow (2000-12-01):
 # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27.
 
+# From Rives McDow (2001-07-17):
+# The Kingdom of Tonga will move to DST at 0200 local time on Sunday,
+# November 25, 2001 and revert back to standard time at 0300 local
+# time on Sunday, March 3, 2002.
+
+
 ###############################################################################
 
 # The International Date Line
diff --git a/timezone/backward b/timezone/backward
index 0bfa8724f4..45ade4dd3d 100644
--- a/timezone/backward
+++ b/timezone/backward
@@ -1,4 +1,4 @@
-# @(#)backward	7.20
+# @(#)backward	7.21
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
@@ -9,8 +9,9 @@ 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
+Link	Asia/Chongqing		Asia/Chungking
+Link	Asia/Dhaka		Asia/Dacca
 Link	Asia/Jerusalem		Asia/Tel_Aviv
 Link	Asia/Thimphu		Asia/Thimbu
 Link	Asia/Ulaanbaatar	Asia/Ulan_Bator
@@ -43,9 +44,9 @@ Link	Pacific/Easter		Chile/EasterIsland
 Link	America/Havana		Cuba
 Link	Africa/Cairo		Egypt
 Link	Europe/Dublin		Eire
+Link	Europe/Chisinau		Europe/Tiraspol
 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
@@ -65,9 +66,9 @@ Link	America/Denver		Navajo
 Link	Pacific/Auckland	NZ
 Link	Pacific/Chatham		NZ-CHAT
 Link	Pacific/Pago_Pago	Pacific/Samoa
-Link	Asia/Shanghai		PRC
 Link	Europe/Warsaw		Poland
 Link	Europe/Lisbon		Portugal
+Link	Asia/Shanghai		PRC
 Link	Asia/Taipei		ROC
 Link	Asia/Seoul		ROK
 Link	Asia/Singapore		Singapore
diff --git a/timezone/europe b/timezone/europe
index b99053d184..b87e31526d 100644
--- a/timezone/europe
+++ b/timezone/europe
@@ -1,4 +1,4 @@
-# @(#)europe	7.79
+# @(#)europe	7.80
 
 # 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
@@ -9,7 +9,7 @@
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -206,7 +206,7 @@
 # (Lords Hansard 11 June 1997 columns 964 to 976)
 # </a>.
 
-# From Paul Eggert (2000-02-17):
+# From Paul Eggert (2001-07-18):
 #
 # For lack of other data, we'll follow Shanks for Eire in 1940-1948.
 #
@@ -234,6 +234,12 @@
 #
 #
 # Whitman says Dublin Mean Time was -0:25:21, which is more precise than Shanks.
+# Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
+# (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
+# to London.  For example:
+#
+#   "Timeball on the ballast office is down.  Dunsink time."
+#   -- James Joyce, Ulysses
 
 # From Paul Eggert (1999-03-28):
 # Clive Feather (<news:859845706.26043.0@office.demon.net>, 1997-03-31)
@@ -374,14 +380,14 @@ Zone	Europe/London	-0:01:15 -	LMT	1847 Dec  1
 			 0:00	GB-Eire	%s	1996
 			 0:00	EU	GMT/BST
 Zone	Europe/Belfast	-0:23:40 -	LMT	1880 Aug  2
-			-0:25:21 -	DMT	1916 May 21 2:00    # Dublin MT
+			-0:25:21 -	DMT	1916 May 21 2:00 # Dublin/Dunsink MT
 			-0:25:21 1:00	IST	1916 Oct  1 2:00s   # Irish Summer Time
 			 0:00	GB-Eire	%s	1968 Oct 27
 			 1:00	-	BST	1971 Oct 31 2:00u
 			 0:00	GB-Eire	%s	1996
 			 0:00	EU	GMT/BST
-Zone	Europe/Dublin	-0:25:21 -	LMT	1880 Aug  2
-			-0:25:21 -	DMT	1916 May 21 2:00    # Dublin MT
+Zone	Europe/Dublin	-0:25:00 -	LMT	1880 Aug  2
+			-0:25:21 -	DMT	1916 May 21 2:00
 			-0:25:21 1:00	IST	1916 Oct  1 2:00s
 			 0:00	GB-Eire	%s	1921 Dec  6 # independence
 			 0:00	GB-Eire	GMT/IST	1940 Feb 25 2:00
@@ -728,12 +734,36 @@ Zone Atlantic/Faeroe	-0:27:04 -	LMT	1908 Jan 11	# Torshavn
 # used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
 # rules since at least 1991.  Assume EU rules since 1980.
 
+# From Gwillin Law (2001-06-06), citing
+# <http://www.statkart.no/efs/efshefter/2001/efs5-2001.pdf> (2001-03-15),
+# and with translations corrected by Steffen Thorsen:
+#
+# Greenland has four local times, and the relation to UTC
+# is according to the following time line:
+#
+# The military zone near Thule	UTC-4
+# Standard Greenland time	UTC-3
+# Scoresbysund			UTC-1
+# Danmarkshavn			UTC
+#
+# In the military area near Thule and in Danmarkshavn DST will not be
+# introduced.
+
+# From Paul Eggert (2001-09-29):
+# The 1997 CIA map shows Danmarkshavn on GMT; the 1995 map as like Godthab.
+# For lack of better info, assume they were like Godthab before 1996.
+# The 2000 IATA shows Thule as observing DST, so assume they stopped in 2001.
+
 #
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Thule	1993	max	-	Apr	Sun>=1	2:00	1:00	D
-Rule	Thule	1993	max	-	Oct	lastSun	2:00	0	S
+Rule	Thule	1993	2000	-	Apr	Sun>=1	2:00	1:00	D
+Rule	Thule	1993	2000	-	Oct	lastSun	2:00	0	S
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone America/Danmarkshavn -1:14:40 -	LMT	1916 Jul 28
+			-3:00	-	WGT	1980 Apr  6 2:00
+			-3:00	EU	WG%sT	1996
+			0:00	-	GMT
 Zone America/Scoresbysund -1:29:00 -	LMT	1916 Jul 28 # Ittoqqortoormiit
 			-2:00	-	CGT	1980 Apr  6 2:00
 			-2:00	C-Eur	CG%sT	1981 Mar 29
@@ -1081,7 +1111,7 @@ Zone Atlantic/Reykjavik	-1:27:24 -	LMT	1837
 #
 # 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).
+# called Palermo Time (+00:53:28) and Cagliari Time (+00:36:32).
 # 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.
@@ -1442,7 +1472,7 @@ Rule	Neth	1945	only	-	Sep	16	2:00s	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Europe/Amsterdam	0:19:32 -	LMT	1835
 			0:19:32	Neth	%s	1937 Jul  1
-			0:20	Neth	NE%sT	1940 May 17 0:00 # Dutch Time
+			0:20	Neth	NE%sT	1940 May 16 0:00 # Dutch Time
 			1:00	C-Eur	CE%sT	1945 Apr  2 2:00
 			1:00	Neth	CE%sT	1977
 			1:00	EU	CE%sT
@@ -1659,14 +1689,14 @@ Zone	Europe/Lisbon	-0:36:32 -	LMT	1884
 			 1:00	EU	CE%sT	1996 Mar 31 1:00u
 			 0:00	EU	WE%sT
 Zone Atlantic/Azores	-1:42:40 -	LMT	1884		# Ponta Delgada
-			-1:55	-	HMT	1911 May 24  # Horta Mean Time
+			-1:54:32 -	HMT	1911 May 24  # Horta Mean Time
 			-2:00	Port	AZO%sT	1966 Apr  3 2:00 # Azores Time
 			-1:00	Port	AZO%sT	1983 Sep 25 1:00s
 			-1:00	W-Eur	AZO%sT	1992 Sep 27 1:00s
 			 0:00	EU	WE%sT	1993 Mar 28 1:00u
 			-1:00	EU	AZO%sT
 Zone Atlantic/Madeira	-1:07:36 -	LMT	1884		# Funchal
-			-1:08	-	FMT	1911 May 24  # Funchal Mean Time
+			-1:07:36 -	FMT	1911 May 24  # Funchal Mean Time
 			-1:00	Port	MAD%sT	1966 Apr  3 2:00 # Madeira Time
 			 0:00	Port	WE%sT	1983 Sep 25 1:00s
 			 0:00	EU	WE%sT
@@ -1707,6 +1737,12 @@ Zone Europe/Bucharest	1:44:24 -	LMT	1891 Oct
 # are from Andrey A. Chernov.  The rest is from Shanks, except we follow
 # Chernov's report that 1992 DST transitions were Sat 23:00, not Sun 02:00s.
 #
+# From Stanislaw A. Kuzikowski <S.A.Kuz@iae.nsk.su> (1994-06-29):
+# But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
+# I do not know why they have decided to make this change;
+# as far as I remember it was done exactly during winter->summer switching
+# so we (Novosibirsk) simply did not switch.
+#
 # 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)....
@@ -1725,12 +1761,44 @@ Zone Europe/Bucharest	1:44:24 -	LMT	1891 Oct
 # the rest of Russia for two weeks--even soldiers stationed here began
 # enforcing curfew at the wrong time.
 #
+# From Gwillim Law (2001-06-05):
+# There's considerable evidence that Sakhalin Island used to be in
+# UTC+11, and has changed to UTC+10, in this decade.  I start with the
+# SSIM, which listed Yuzhno-Sakhalinsk in zone RU10 along with Magadan
+# until February 1997, and then in RU9 with Khabarovsk and Vladivostok
+# since September 1997....  Although the Kuril Islands are
+# administratively part of Sakhalin oblast', they appear to have
+# remained on UTC+11 along with Magadan.
+#
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+#
+# Kaliningradskaya oblast'.
 Zone Europe/Kaliningrad	 1:22:00 -	LMT	1893 Apr
 			 1:00	C-Eur	CE%sT	1945
 			 2:00	Poland	CE%sT	1946
 			 3:00	Russia	MSK/MSD	1991 Mar 31 2:00s
 			 2:00	Russia	EE%sT
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Respublika Adygeya, Arkhangel'skaya oblast', Astrakhanskaya oblast',
+# Belgorodskaya oblast', Bryanskaya oblast', Vladimirskaya oblast',
+# Volgogradskaya oblast', Vologodskaya oblast', Voronezhskaya oblast',
+# Respublika Dagestan, Ivanovskaya oblast', Respublika Ingushetiya,
+# Kabarbino-Balkarskaya Respublika, Respublika Kalmykiya,
+# Kalyzhskaya oblast', Respublika Karachaevo-Cherkessiya,
+# Respublika Kareliya, Kirovskaya oblast', Respublika Komi,
+# Kostromskaya oblast', Krasnodarskij kraj, Kurskaya oblast',
+# Leningradskaya oblast', Lipetskaya oblast', Respublika Marij El,
+# Respublika Mordoviya, Moskva, Moskovskaya oblast',
+# Murmanskaya oblast', Nenetskij avtonomnyj okrug,
+# Nizhegorodskaya oblast', Novgorodskaya oblast', Orlovskaya oblast',
+# Penzenskaya oblast', Pskovskaya oblast', Rostovskaya oblast',
+# Ryazanskaya oblast', Sankt-Peterburg, Saratovskaya oblast',
+# Respublika Severnaya Osetiya, Smolenskaya oblast',
+# Stavropol'skij kraj, Tambovskaya oblast', Respublika Tatarstan,
+# Tverskaya oblast', Tyl'skaya oblast', Ul'yanovskaya oblast',
+# Chechenskaya Respublika, Chuvashskaya oblast',
+# Yaroslavskaya oblast'
 Zone Europe/Moscow	 2:30:20 -	LMT	1880
 			 2:30	-	MMT	1916 Jul  3 # Moscow Mean Time
 			 2:30:48 Russia	%s	1919 Jul  1 2:00
@@ -1739,6 +1807,9 @@ Zone Europe/Moscow	 2:30:20 -	LMT	1880
 			 3:00	Russia	MSK/MSD	1991 Mar 31 2:00s
 			 2:00	Russia	EE%sT	1992 Jan 19 2:00s
 			 3:00	Russia	MSK/MSD
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Samarskaya oblast', Udmyrtskaya respublika
 Zone Europe/Samara	 3:20:36 -	LMT	1919 Jul  1 2:00
 			 3:00	-	KUYT	1930 Jun 21 # Kuybyshev
 			 4:00	Russia	KUY%sT	1989 Mar 26 2:00s
@@ -1746,59 +1817,115 @@ Zone Europe/Samara	 3:20:36 -	LMT	1919 Jul  1 2:00
 			 2:00	Russia	KUY%sT	1991 Sep 29 2:00s
 			 3:00	-	KUYT	1991 Oct 20 3:00
 			 4:00	Russia	SAM%sT	# Samara Time
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Respublika Bashkortostan, Komi-Permyatskij avtonomnyj okrug,
+# Kurganskaya oblast', Orenburgskaya oblast', Permskaya oblast',
+# Sverdlovskaya oblast', Tyumenskaya oblast',
+# Khanty-Manskijskij avtonomnyj okrug, Chelyabinskaya oblast',
+# Yamalo-Nenetskij avtonomnyj okrug.
 Zone Asia/Yekaterinburg	 4:02:24 -	LMT	1919 Jul 15 4:00
 			 4:00	-	SVET	1930 Jun 21 # Sverdlovsk Time
 			 5:00	Russia	SVE%sT	1991 Mar 31 2:00s
 			 4:00	Russia	SVE%sT	1992 Jan 19 2:00s
 			 5:00	Russia	YEK%sT	# Yekaterinburg Time
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Respublika Altaj, Altajskij kraj, Omskaya oblast'.
 Zone Asia/Omsk		 4:53:36 -	LMT	1919 Nov 14
 			 5:00	-	OMST	1930 Jun 21 # Omsk TIme
 			 6:00	Russia	OMS%sT	1991 Mar 31 2:00s
 			 5:00	Russia	OMS%sT	1992 Jan 19 2:00s
 			 6:00	Russia	OMS%sT
-# From Stanislaw A. Kuzikowski <S.A.Kuz@iae.nsk.su> (1994-06-29):
-# But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
-# I do not know why they have decided to make this change;
-# as far as I remember it was done exactly during winter->summer switching
-# so we (Novosibirsk) simply did not switch.
+#
+# Novosibirskaya oblast'.
 Zone Asia/Novosibirsk	 5:31:40 -	LMT	1919 Dec 14 6:00
 			 6:00	-	NOVT	1930 Jun 21 # Novosibirsk Time
 			 7:00	Russia	NOV%sT	1991 Mar 31 2:00s
 			 6:00	Russia	NOV%sT	1992 Jan 19 2:00s
 			 7:00	Russia	NOV%sT	1993 May 23 # says Shanks
 			 6:00	Russia	NOV%sT
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Kemerovskaya oblast', Krasnoyarskij kraj,
+# Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug, Tomskaya oblast',
+# Respublika Tuva, Respublika Khakasiya, Evenkijskij avtonomnyj okrug.
 Zone Asia/Krasnoyarsk	 6:11:20 -	LMT	1920 Jan  6
 			 6:00	-	KRAT	1930 Jun 21 # Krasnoyarsk Time
 			 7:00	Russia	KRA%sT	1991 Mar 31 2:00s
 			 6:00	Russia	KRA%sT	1992 Jan 19 2:00s
 			 7:00	Russia	KRA%sT
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Respublika Buryatiya, Irkutskaya oblast',
+# Ust'-Ordynskij Buryatskij avtonomnyj okrug.
 Zone Asia/Irkutsk	 6:57:20 -	LMT	1880
 			 6:57:20 -	IMT	1920 Jan 25 # Irkutsk Mean Time
 			 7:00	-	IRKT	1930 Jun 21 # Irkutsk Time
 			 8:00	Russia	IRK%sT	1991 Mar 31 2:00s
 			 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]
+# 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.
 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]
+# 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.
 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
 			 9:00	Russia	VLA%sST	1992 Jan 19 2:00s
 			10:00	Russia	VLA%sT
+#
+# Sakhalinskaya oblast'.
+# The Zone name should be Yuzhno-Sakhalinsk, but that's too long.
+Zone Asia/Sakhalin	 9:30:48 -	LMT	1905 Aug 23
+			 9:00	-	CJT	1938
+			 9:00	-	JST	1945 Aug 25
+			11:00	Russia	SAK%sT	1991 Mar 31 2:00s # Sakhalin T.
+			10:00	Russia	SAK%sT	1992 Jan 19 2:00s
+			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]
+# Magadanskaya oblast', Respublika Sakha (Yakutiya).
+#
+# From Alan Pritchard (2001-08-24): [The Sakha districts are:]
+# Abyisky, Allaikhovsky, Momsky, Nizhnekolymsky, Oimyakonsky.
 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
 			10:00	Russia	MAG%sT	1992 Jan 19 2:00s
 			11:00	Russia	MAG%sT
-# This name should be Asia/Petropavlovsk-Kamchatski, but that's too long.
+#
+# From Oscar van Vlijmen (2001-08-25): [This region consists of]
+# Kamchatskaya oblast', Koryakskij avtonomnyj okrug.
+#
+# The Zone name should be Asia/Petropavlovsk-Kamchatski, but that's too long.
 Zone Asia/Kamchatka	10:34:36 -	LMT	1922 Nov 10
 			11:00	-	PETT	1930 Jun 21 # P-K Time
 			12:00	Russia	PET%sT	1991 Mar 31 2:00s
 			11:00	Russia	PET%sT	1992 Jan 19 2:00s
 			12:00	Russia	PET%sT
+#
+# Chukotskij avtonomnyj okrug
 Zone Asia/Anadyr	11:49:56 -	LMT	1924 May  2
 			12:00	-	ANAT	1930 Jun 21 # Anadyr Time
 			13:00	Russia	ANA%sT	1982 Apr  1 0:00s
diff --git a/timezone/leapseconds b/timezone/leapseconds
index f730e489c4..495eb818df 100644
--- a/timezone/leapseconds
+++ b/timezone/leapseconds
@@ -1,4 +1,4 @@
-# @(#)leapseconds	7.13
+# @(#)leapseconds	7.14
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -43,8 +43,9 @@ 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
+
+#                  INTERNATIONAL EARTH ROTATION SERVICE (IERS)
+#   	       SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE
 # 
 # SERVICE DE LA ROTATION TERRESTRE
 # OBSERVATOIRE DE PARIS
@@ -53,12 +54,26 @@ Leap	1998	Dec	31	23:59:60	+	S
 # FAX       : 33 (0) 1 40 51 22 91
 # Internet  : iers@obspm.fr
 # 
-# Paris, 11 January 2001
+#                                                Paris, 25 June 2001
+# 
+#                                                Bulletin C 22
+# 
+#                                                To authorities responsible
+#                                                for the measurement and
+#                                                distribution of time
+# 
+#                           INFORMATION ON UTC - TAI
 # 
-# Bulletin C 21
+#  NO positive leap second will be introduced at the end of December 2001.
+#  The difference between UTC and the International Atomic Time TAI is :
 # 
-# To authorities responsible for the measurement and distribution of time
+#      from 1999 January 1, 0h UTC, until further notice : UTC-TAI = -32 s
 # 
-# INFORMATION ON UTC - TAI
+#  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
+#  six months, either to announce a time step in UTC, or to confirm that there
+#  will be no time step at the next possible date.
 # 
-# NO positive leap second will be introduced at the end of June 2001.
+#                                              Daniel GAMBIS
+#                                              Director
+#                                              Earth Orientation Center of IERS
diff --git a/timezone/northamerica b/timezone/northamerica
index 1b1447e419..6821e99674 100644
--- a/timezone/northamerica
+++ b/timezone/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica	7.59
+# @(#)northamerica	7.60
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -186,7 +186,7 @@ Rule	US	1987	max	-	Apr	Sun>=1	2:00	1:00	D
 # See the file "australasia".
 
 
-# US Eastern time, represented by New York
+# US eastern time, represented by New York
 
 # Connecticut, Delaware, District of Columbia, most of Florida,
 # Georgia, far southeastern Indiana, eastern Kentucky, Maine,
@@ -208,7 +208,7 @@ Zone America/New_York	-4:56:02 -	LMT	1883 Nov 18 12:00
 			-5:00	NYC	E%sT	1967
 			-5:00	US	E%sT
 
-# US Central time, represented by Chicago
+# US central time, represented by Chicago
 
 # Alabama, Arkansas, Florida panhandle, Illinois, western Indiana
 # corners, Iowa, most of Kansas, western Kentucky, Louisiana,
@@ -232,11 +232,16 @@ Zone America/Chicago	-5:50:36 -	LMT	1883 Nov 18 12:00
 			-6:00	US	C%sT	1946
 			-6:00	Chicago	C%sT	1967
 			-6:00	US	C%sT
+# Oliver County, ND switched from mountain to central time on 1992-10-25.
+Zone America/North_Dakota/Center -6:45:12 - LMT	1883 Nov 18 12:00
+			-7:00	US	M%sT	1992 Oct 25 02:00
+			-6:00	US	C%sT
 
-# US Mountain time, represented by Denver
+# US mountain time, represented by Denver
 #
 # Colorado, southern Idaho, far western Kansas, Montana, western
-# Nebraska, New Mexico, southwestern North Dakota, far eastern Oregon,
+# 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,
 # and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
 #
@@ -256,7 +261,7 @@ Zone America/Denver	-6:59:56 -	LMT	1883 Nov 18 12:00
 
 # US Pacific time, represented by Los Angeles
 #
-# California, northern Idaho, Nevada, most of Oregon, and Washington
+# California, northern Idaho, 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
@@ -511,6 +516,13 @@ Link America/Louisville America/Kentucky/Louisville
 # Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
 # (-0500) time.  They won't "fall back" this year.  See Sara Shipley,
 # The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
+#
+# From Paul Eggert (2001-07-16):
+# The final rule was published in the
+# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22">
+# Federal Register 65, 160 (2000-08-17), page 50154-50158.
+# </a>
+# 
 Zone America/Kentucky/Monticello -5:39:24 - LMT	1883 Nov 18 12:00
 			-6:00	US	C%sT	1946
 			-6:00	-	CST	1968
@@ -526,13 +538,20 @@ Zone America/Kentucky/Monticello -5:39:24 - LMT	1883 Nov 18 12:00
 # Oliver County, ND (from MST to CST) ... 1992-10
 # West Wendover, NV (from PST TO MST) ... 1999-10
 # Wayne County, KY (from CST to EST) ... 2000-10
-# There is another change in the offing; Mercer County, ND is looking
-# to change from MT to CT. It is possible that two other ND counties
-# (Sioux and Morton) will look to change also.  If made, the earliest
-# a change would be effective is October 2001.
 #
-# From Paul Eggert (2000-10-02):
-# FIXME: I haven't yet had time to incorporate all the above changes.
+# From Paul Eggert (2001-07-17):
+# We don't know where the line used to be within Kearny County, KS,
+# so omit that change for now.
+# See America/Indiana/Knox for the Starke County, IN change.
+# See America/North_Dakota/Center for the Oliver County, ND change.
+# West Wendover, NV officially switched from Pacific to mountain time on
+# 1999-10-31.  See the
+# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15">
+# Federal Register 64, 203 (1999-10-21), page 56705-56707.
+# </a>
+# However, the Federal Register says that West Wendover already operated
+# on mountain time, and the rule merely made this official;
+# hence a separate tz entry is not needed.
 
 # Michigan
 #
@@ -618,7 +637,7 @@ Link	Pacific/Honolulu	HST
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -1077,9 +1096,9 @@ Zone America/Dawson_Creek -8:00:56 -	LMT	1884
 # From Paul Eggert (1999-09-20):
 # <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html">
 # Basic Facts: The New Territory
-# </a> (1999) reports that Pangnirtung operates on Eastern time,
+# </a> (1999) reports that Pangnirtung operates on eastern time,
 # and that Coral Harbour does not observe DST.  We don't know when
-# Pangnirtung switched to Eastern time; we'll guess 1995.
+# Pangnirtung switched to eastern time; we'll guess 1995.
 # We'll ignore the claim about Coral Harbour for now,
 # since we have no further info.
 
@@ -1334,6 +1353,15 @@ Zone America/Dawson	-9:17:40 -	LMT	1900 Aug 20
 # References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp>
 # Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
 
+# From Reuters (2001-09-04):
+# Mexico's Supreme Court on Tuesday declared that daylight savings was
+# unconstitutional in Mexico City, creating the possibility the
+# capital will be in a different time zone from the rest of the nation
+# next year....  The Supreme Court's ruling takes effect at 2:00
+# a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to
+# standard time. "This is so residents of the Federal District are not
+# subject to unexpected time changes," a statement from the court said.
+
 # 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
@@ -1370,7 +1398,8 @@ Zone America/Mexico_City -6:36:36 -	LMT	1922 Jan  1  0:23:24
 			-7:00	-	MST	1931 May  1 23:00
 			-6:00	-	CST	1931 Oct
 			-7:00	-	MST	1932 Apr  1
-			-6:00	Mexico	C%sT
+			-6:00	Mexico	C%sT	2001 Sep 30 02:00
+			-6:00	-	CST
 # Chihuahua
 Zone America/Chihuahua	-7:04:20 -	LMT	1921 Dec 31 23:55:40
 			-7:00	-	MST	1927 Jun 10 23:00
@@ -1671,7 +1700,7 @@ Zone	America/Jamaica	-5:07:12 -	LMT	1890		# Kingston
 # 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
+			-4:04:20 -	FFMT	1911 May     # Fort-de-France MT
 			-4:00	-	AST	1980 Apr  6
 			-4:00	1:00	ADT	1980 Sep 28
 			-4:00	-	AST
@@ -1697,7 +1726,7 @@ Rule	Nic	1992	only	-	Jan	1	4:00	1:00	D
 Rule	Nic	1992	only	-	Sep	24	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
+			-5:45:12 -	MMT	1934 Jun 23 # Managua Mean Time?
 			-6:00	-	CST	1973 May
 			-5:00	-	EST	1975 Feb 16
 			-6:00	Nic	C%sT	1993 Jan 1 4:00
@@ -1707,7 +1736,7 @@ Zone	America/Managua	-5:45:08 -	LMT	1890
 # Panama
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Panama	-5:18:08 -	LMT	1890
-			-5:20	-	PMT	1908 Apr 22   # Panama Mean Time
+			-5:19:36 -	CMT	1908 Apr 22   # Colon Mean Time
 			-5:00	-	EST
 
 # Puerto Rico
@@ -1726,7 +1755,7 @@ Zone America/St_Kitts	-4:10:52 -	LMT	1912 Mar 2	# Basseterre
 # 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
+			-4:04:00 -	CMT	1912	    # Castries Mean Time
 			-4:00	-	AST
 
 # St Pierre and Miquelon
diff --git a/timezone/southamerica b/timezone/southamerica
index 5cd58a6b17..4e6743c9c6 100644
--- a/timezone/southamerica
+++ b/timezone/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.41
+# @(#)southamerica	7.42
 
 # 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
@@ -9,7 +9,7 @@
 # Thomas G. Shanks, The International Atlas (5th edition),
 # San Diego: ACS Publications, Inc. (1999).
 #
-# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source
+# Gwillim Law writes that a good source
 # for recent time zone data is the International Air Transport
 # Association's Standard Schedules Information Manual (IATA SSIM),
 # published semiannually.  Law sent in several helpful summaries
@@ -125,6 +125,29 @@ Rule	Arg	2000	only	-	Mar	Sun>=1	0:00	0	-
 # de la Rua on March 2, 2000, because it would make people spend more energy
 # in the winter time, rather than less.  The change took effect on March 3.
 #
+# From Mariano Absatz (2001-06-06):
+# one of the major newspapers here in Argentina said that the 1999
+# Timezone Law (which never was effectively applied) will (would?) be
+# in effect.... The article is at
+# http://ar.clarin.com/diario/2001-06-06/e-01701.htm
+# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted
+# 1999-09-17, and published 1999-09-21.  The official publication is at:
+# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF
+# Regretfully, you have to subscribe (and pay) for the on-line version....
+#
+# (2001-06-12):
+# the timezone for Argentina will not change next Sunday.
+# Apparently it will do so on Sunday 24th....
+# http://ar.clarin.com/diario/2001-06-12/s-03501.htm
+#
+# (2001-06-25):
+# Last Friday (yes, the last working day before the date of the change), the
+# Senate annulled the 1999 law that introduced the changes later postponed.
+# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm
+# It remains the vote of the Deputies..., but it will be the same....
+# 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.
+#
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #
 # Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC),
@@ -206,7 +229,7 @@ Zone	America/Aruba	-4:40:24 -	LMT	1912 Feb 12	# Oranjestad
 # Bolivia
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/La_Paz	-4:32:36 -	LMT	1890
-			-4:32:36 -	LPMT	1931 Oct 15 # La Paz Mean Time
+			-4:32:36 -	CMT	1931 Oct 15 # Calamarca MT
 			-4:32:36 1:00	BOST	1932 Mar 21 # Bolivia ST
 			-4:00	-	BOT	# Bolivia Time
 
@@ -382,8 +405,14 @@ Rule	Brazil	2000	only	-	Feb	27	 0:00	0	-
 # repeals DST in PE and RR, effective 2000-10-15 00:00.
 # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17)
 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00.
+# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a>
+# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE.
+#
+# The latest decree listed above says that the following states observe DST:
+# AL, BA, CE, DF, ES, GO, MA, MG, MS, MT,
+# PB, PE, PI, PR, RJ, RN, RS, SC, SE, SP, TO.
 #
-# These give only one year's rules.  After that, the rules are guesses
+# For dates after mid-2002, the following rules are guesses
 # and are quite possibly wrong, but are more likely than no DST at all.
 Rule	Brazil	2000	max	-	Oct	Sun>=8	 0:00	1:00	S
 Rule	Brazil	2001	max	-	Feb	Sun>=15	 0:00	0	-
@@ -409,14 +438,16 @@ Zone America/Fortaleza	-2:34:00 -	LMT	1914
 			-3:00	Brazil	BR%sT	1990 Sep 17
 			-3:00	-	BRT	1999 Sep 30
 			-3:00	Brazil	BR%sT	2000 Oct 22
-			-3:00	-	BRT
+			-3:00	-	BRT	2001 Sep 13
+			-3:00	Brazil	BR%sT
 #
 # Pernambuco (PE) (except Atlantic islands)
 Zone America/Recife	-2:19:36 -	LMT	1914
 			-3:00	Brazil	BR%sT	1990 Sep 17
 			-3:00	-	BRT	1999 Sep 30
 			-3:00	Brazil	BR%sT	2000 Oct 15
-			-3:00	-	BRT
+			-3:00	-	BRT	2001 Sep 13
+			-3:00	Brazil	BR%sT
 #
 # Tocantins (TO)
 Zone America/Araguaina	-3:12:48 -	LMT	1914
@@ -431,7 +462,8 @@ Zone America/Maceio	-2:22:52 -	LMT	1914
 			-3:00	Brazil	BR%sT	1996 Sep  4
 			-3:00	-	BRT	1999 Sep 30
 			-3:00	Brazil	BR%sT	2000 Oct 22
-			-3:00	-	BRT
+			-3:00	-	BRT	2001 Sep 13
+			-3:00	Brazil	BR%sT
 #
 # Bahia (BA), Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR),
@@ -441,7 +473,7 @@ Zone America/Sao_Paulo	-3:06:28 -	LMT	1914
 			-3:00	1:00	BRST	1964
 			-3:00	Brazil	BR%sT
 #
-# Mato Grosso, Mato Grosso do Sul
+# Mato Grosso (MT), Mato Grosso do Sul (MS)
 Zone America/Cuiaba	-3:44:20 -	LMT	1914
 			-4:00	Brazil	AM%sT
 #
@@ -726,7 +758,7 @@ Rule	Peru	1994	only	-	Jan	 1	0:00	1:00	S
 Rule	Peru	1994	only	-	Apr	 1	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Lima	-5:08:12 -	LMT	1890
-			-5:09	-	LMT	1908 Jul 28 # Lima Mean Time
+			-5:08:36 -	LMT	1908 Jul 28 # Lima Mean Time?
 			-5:00	Peru	PE%sT	# Peru Time
 
 # South Georgia
@@ -811,6 +843,6 @@ Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28
 # Venezuela
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Caracas	-4:27:44 -	LMT	1890
-			-4:27:44 -	CMT	1912 Feb 12  # Caracas Mean Time
+			-4:27:40 -	CMT	1912 Feb 12 # Caracas Mean Time?
 			-4:30	-	VET	1965	     # Venezuela Time
 			-4:00	-	VET
diff --git a/timezone/zone.tab b/timezone/zone.tab
index dfecc7318b..1070f9c9c4 100644
--- a/timezone/zone.tab
+++ b/timezone/zone.tab
@@ -1,4 +1,4 @@
-# @(#)zone.tab	1.23
+# @(#)zone.tab	1.24
 #
 # TZ zone descriptions
 #
@@ -123,10 +123,10 @@ CK	-2114-15946	Pacific/Rarotonga
 CL	-3327-07040	America/Santiago	most locations
 CL	-2710-10927	Pacific/Easter	Easter Island & Sala y Gomez
 CM	+0403+00942	Africa/Douala
-CN	+4545+12641	Asia/Harbin	north Manchuria
-CN	+3114+12128	Asia/Shanghai	China coast
-CN	+2934+10635	Asia/Chungking	China mountains
-CN	+4348+08735	Asia/Urumqi	Tibet & Xinjiang
+CN	+3114+12128	Asia/Shanghai	most eastern locations
+CN	+4545+12641	Asia/Harbin	Heilongjiang
+CN	+2934+10635	Asia/Chongqing	central China
+CN	+4348+08735	Asia/Urumqi	Tibet & most of Xinjiang
 CN	+3929+07559	Asia/Kashgar	Eastern Turkestan
 CO	+0436-07405	America/Bogota
 CR	+0956-08405	America/Costa_Rica
@@ -168,9 +168,10 @@ GE	+4143+04449	Asia/Tbilisi
 GF	+0456-05220	America/Cayenne
 GH	+0533-00013	Africa/Accra
 GI	+3608-00521	Europe/Gibraltar
-GL	+7030-02215	America/Scoresbysund	east Greenland
-GL	+6411-05144	America/Godthab	southwest Greenland
-GL	+7634-06847	America/Thule	northwest Greenland
+GL	+6411-05144	America/Godthab	most locations
+GL	+7646-01840	America/Danmarkshavn	Danmarkshavn
+GL	+7030-02215	America/Scoresbysund	Scoresbysund / Ittoqqortoormiit
+GL	+7634-06847	America/Thule	Thule / Pituffik and environs
 GM	+1328-01639	Africa/Banjul
 GN	+0931-01343	Africa/Conakry
 GP	+1614-06132	America/Guadeloupe
@@ -239,7 +240,7 @@ ML	+1446-00301	Africa/Timbuktu	northeast Mali
 MM	+1647+09610	Asia/Rangoon
 MN	+4755+10653	Asia/Ulaanbaatar	most locations
 MN	+4801+09139	Asia/Hovd	Bayan-Olgiy, Govi-Altai, Hovd, Uvs, Zavkhan
-#MN	+4804+11430	Asia/Choibalsan	Dornod, Sukhbaatar (unsure about this)
+MN	+4804+11430	Asia/Choibalsan	Dornod, Sukhbaatar
 MO	+2214+11335	Asia/Macao
 MP	+1512+14545	Pacific/Saipan
 MQ	+1436-06105	America/Martinique
@@ -305,7 +306,8 @@ RU	+5601+09250	Asia/Krasnoyarsk	Moscow+04 - Yenisei River
 RU	+5216+10420	Asia/Irkutsk	Moscow+05 - Lake Baikal
 RU	+6200+12940	Asia/Yakutsk	Moscow+06 - Lena River
 RU	+4310+13156	Asia/Vladivostok	Moscow+07 - Amur River
-RU	+5934+15048	Asia/Magadan	Moscow+08 - Magadan & Sakhalin
+RU	+4658+14242	Asia/Sakhalin	Moscow+07 - Sakhalin Island
+RU	+5934+15048	Asia/Magadan	Moscow+08 - Magadan
 RU	+5301+15839	Asia/Kamchatka	Moscow+09 - Kamchatka
 RU	+6445+17729	Asia/Anadyr	Moscow+10 - Bering Sea
 RW	-0157+03004	Africa/Kigali
@@ -363,6 +365,7 @@ US	+411745-0863730	America/Indiana/Knox	Eastern Standard Time - Indiana - Starke
 US	+384452-0850402	America/Indiana/Vevay	Eastern Standard Time - Indiana - Switzerland County
 US	+415100-0873900	America/Chicago	Central Time
 US	+450628-0873651	America/Menominee	Central Time - Michigan - Wisconsin border
+US	+470659-1011757	America/North_Dakota/Center	Central Time - North Dakota - Oliver County
 US	+394421-1045903	America/Denver	Mountain Time
 US	+433649-1161209	America/Boise	Mountain Time - south Idaho & east Oregon
 US	+364708-1084111	America/Shiprock	Mountain Time - Navajo