MFV of 274557,tzdata{2014j}

Release 2014j - 2014-11-10 17:37:11 -0800

  Changes affecting current and future time stamps

    Turks & Caicos' switch from US eastern time to UTC-4 year-round
    did not occur on 2014-11-02 at 02:00.  It's currently scheduled
    for 2015-11-01 at 02:00.  (Thanks to Chris Walton.)

  Changes affecting past time stamps

    Many pre-1989 time stamps have been corrected for Asia/Seoul and
    Asia/Pyongyang, based on sources for the Korean-language Wikipedia
    entry for time in Korea.  (Thanks to Sanghyuk Jung.)  Also, no
    longer guess that Pyongyang mimicked Seoul time after World War II,
    as this is politically implausible.

    Some more zones have been turned into links, when they differed
    from existing zones only for older time stamps.  As usual,
    these changes affect UTC offsets in pre-1970 time stamps only.
    Their old contents have been moved to the 'backzone' file.
    The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
    Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
    Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
    Indian/Mayotte.

  Changes affecting commentary

    The commentary is less enthusiastic about Shanks as a source,
    and is more careful to distinguish UT from UTC.

1 files changed, 22 insertions, 57 deletions

diff --git a/contrib/tzdata/africa b/contrib/tzdata/africa
index b17c62b7e31a..1b9bf50da22c 100644
--- a/contrib/tzdata/africa
+++ b/contrib/tzdata/africa
@@ -6,20 +6,19 @@
 # tz@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2013-02-21):
+# From Paul Eggert (2014-10-31):
 #
-# A good source for time zone historical data outside the U.S. is
+# Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
+# Unfortunately this book contains many errors and cites no sources.
 #
 # 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
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # Another source occasionally used is Edward W. Whitman, World Time Differences,
 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@@ -65,7 +64,6 @@
 #	 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
-#	 4:00	EAST	East Africa Summer Time (no longer used)
 
 # Algeria
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -146,9 +144,7 @@ Zone	Africa/Ndjamena	1:00:12 -	LMT	1912        # N'Djamena
 			1:00	-	WAT
 
 # Comoros
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Indian/Comoro	2:53:04 -	LMT	1911 Jul # Moroni, Gran Comoro
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Democratic Republic of the Congo
 # See Africa/Lagos for the western part and Africa/Maputo for the eastern.
@@ -172,9 +168,7 @@ Link Africa/Abidjan Africa/Sao_Tome	# São Tomé and Príncipe
 Link Africa/Abidjan Atlantic/St_Helena	# St Helena
 
 # Djibouti
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Africa/Djibouti	2:52:36 -	LMT	1911 Jul
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 ###############################################################################
 
@@ -387,27 +381,8 @@ Zone	Africa/Cairo	2:05:09 -	LMT	1900 Oct
 # See Africa/Lagos.
 
 # Eritrea
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Africa/Asmara	2:35:32 -	LMT	1870
-			2:35:32	-	AMT	1890        # Asmara Mean Time
-			2:35:20	-	ADMT	1936 May  5 # Adis Dera MT
-			3:00	-	EAT
-
 # Ethiopia
-# From Paul Eggert (2014-07-31):
-# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
-# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
-# 02:00 or 14:00.  Keep this in mind when you ask the time in Amharic.
-#
-# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
-# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
-# 1890, and that they switched to 3:00 on 1936-05-05.  Perhaps 38E50
-# was for Adis Dera.  Quite likely the Shanks data entries are wrong
-# anyway.
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Africa/Addis_Ababa	2:34:48 -	LMT	1870
-			2:35:20	-	ADMT	1936 May  5 # Adis Dera MT
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Gabon
 # See Africa/Lagos.
@@ -451,6 +426,15 @@ Zone	Africa/Nairobi	2:27:16	-	LMT	1928 Jul
 			2:30	-	BEAT	1940
 			2:45	-	BEAUT	1960
 			3:00	-	EAT
+Link Africa/Nairobi Africa/Addis_Ababa	 # Ethiopia
+Link Africa/Nairobi Africa/Asmara	 # Eritrea
+Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
+Link Africa/Nairobi Africa/Djibouti
+Link Africa/Nairobi Africa/Kampala	 # Uganda
+Link Africa/Nairobi Africa/Mogadishu	 # Somalia
+Link Africa/Nairobi Indian/Antananarivo	 # Madagascar
+Link Africa/Nairobi Indian/Comoro
+Link Africa/Nairobi Indian/Mayotte
 
 # Lesotho
 # See Africa/Johannesburg.
@@ -528,11 +512,7 @@ Zone	Africa/Tripoli	0:52:44 -	LMT	1920
 			2:00	-	EET
 
 # Madagascar
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Indian/Antananarivo 3:10:04 -	LMT	1911 Jul
-			3:00	-	EAT	1954 Feb 27 23:00s
-			3:00	1:00	EAST	1954 May 29 23:00s
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Malawi
 # See Africa/Maputo.
@@ -635,9 +615,7 @@ Zone Indian/Mauritius	3:50:00 -	LMT	1907 # Port Louis
 # no information; probably like Indian/Mauritius
 
 # Mayotte
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Indian/Mayotte	3:00:56 -	LMT	1911 Jul # Mamoutzou
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Morocco
 # See the 'europe' file for Spanish Morocco (Africa/Ceuta).
@@ -1049,11 +1027,7 @@ Zone	Indian/Mahe	3:41:48 -	LMT	1906 Jun # Victoria
 # See Africa/Abidjan.
 
 # Somalia
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Africa/Mogadishu	3:01:28 -	LMT	1893 Nov
-			3:00	-	EAT	1931
-			2:30	-	BEAT	1957
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # South Africa
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1096,11 +1070,7 @@ Link Africa/Khartoum Africa/Juba
 # See Africa/Johannesburg.
 
 # Tanzania
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Africa/Dar_es_Salaam 2:37:08 -	LMT	1931
-			3:00	-	EAT	1948
-			2:45	-	BEAUT	1961
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Togo
 # See Africa/Abidjan.
@@ -1206,12 +1176,7 @@ Zone	Africa/Tunis	0:40:44 -	LMT	1881 May 12
 			1:00	Tunisia	CE%sT
 
 # Uganda
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Africa/Kampala	2:09:40 -	LMT	1928 Jul
-			3:00	-	EAT	1930
-			2:30	-	BEAT	1948
-			2:45	-	BEAUT	1957
-			3:00	-	EAT
+# See Africa/Nairobi.
 
 # Zambia
 # Zimbabwe