components/timezone/europe
changeset 3756 dce353ed563a
parent 2185 75034a1acbe6
child 4008 7fd8fcdea978
--- a/components/timezone/europe	Mon Feb 09 23:03:42 2015 -0800
+++ b/components/timezone/europe	Tue Feb 10 02:00:16 2015 -0800
@@ -6,16 +6,19 @@
 # [email protected] for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2014-05-31):
-# A good source for time zone historical data outside the U.S. is
+# From Paul Eggert (2014-10-31):
+#
+# 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.
+# of the IATA's data after 1990.  Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
 #
 # A reliable and entertaining source about time zones is
 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
@@ -287,6 +290,14 @@
 #   "Timeball on the ballast office is down.  Dunsink time."
 #   -- James Joyce, Ulysses
 
+# "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time
+# was among various actions undertaken by the 'English' government that
+# would 'put the whole country into the SF (Sinn Féin) camp'.  She claimed
+# Irish 'public feeling (was) outraged by forcing of English time on us'."
+# -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising.
+# Irish Times 2014-10-27.
+# http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
+
 # From Joseph S. Myers (2005-01-26):
 # Irish laws are available online at <http://www.irishstatutebook.ie>.
 # These include various relating to legal time, for example:
@@ -594,6 +605,7 @@
 Rule	Russia	1993	2010	-	Mar	lastSun	 2:00s	1:00	S
 Rule	Russia	1993	1995	-	Sep	lastSun	 2:00s	0	-
 Rule	Russia	1996	2010	-	Oct	lastSun	 2:00s	0	-
+# As described below, Russia's 2014 change affects Zone data, not Rule data.
 
 # From Alexander Krivenyshev (2011-06-14):
 # According to Kremlin press service, Russian President Dmitry Medvedev
@@ -1395,35 +1407,32 @@
 # might be a reference to the Julian calendar as opposed to Gregorian, or it
 # might mean something else (???).
 #
-# From Paul Eggert (2006-03-22):
-# The Iceland Almanak, Shanks & Pottenger, and Whitman disagree on many points.
-# We go with the Almanak, except for one claim from Shanks & Pottenger, namely
-# that Reykavik was 21W57 from 1837 to 1908, local mean time before that.
+# From Paul Eggert (2014-11-22):
+# The information below is taken from the 1988 Almanak; see
+# http://www.almanak.hi.is/klukkan.html
 #
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Iceland	1917	1918	-	Feb	19	23:00	1:00	S
+Rule	Iceland	1917	1919	-	Feb	19	23:00	1:00	S
 Rule	Iceland	1917	only	-	Oct	21	 1:00	0	-
-Rule	Iceland	1918	only	-	Nov	16	 1:00	0	-
+Rule	Iceland	1918	1919	-	Nov	16	 1:00	0	-
+Rule	Iceland	1921	only	-	Mar	19	23:00	1:00	S
+Rule	Iceland	1921	only	-	Jun	23	 1:00	0	-
 Rule	Iceland	1939	only	-	Apr	29	23:00	1:00	S
-Rule	Iceland	1939	only	-	Nov	29	 2:00	0	-
+Rule	Iceland	1939	only	-	Oct	29	 2:00	0	-
 Rule	Iceland	1940	only	-	Feb	25	 2:00	1:00	S
-Rule	Iceland	1940	only	-	Nov	 3	 2:00	0	-
-Rule	Iceland	1941	only	-	Mar	 2	 1:00s	1:00	S
-Rule	Iceland	1941	only	-	Nov	 2	 1:00s	0	-
-Rule	Iceland	1942	only	-	Mar	 8	 1:00s	1:00	S
-Rule	Iceland	1942	only	-	Oct	25	 1:00s	0	-
+Rule	Iceland	1940	1941	-	Nov	Sun>=2	 1:00s	0	-
+Rule	Iceland	1941	1942	-	Mar	Sun>=2	 1:00s	1:00	S
 # 1943-1946 - first Sunday in March until first Sunday in winter
 Rule	Iceland	1943	1946	-	Mar	Sun>=1	 1:00s	1:00	S
-Rule	Iceland	1943	1948	-	Oct	Sun>=22	 1:00s	0	-
+Rule	Iceland	1942	1948	-	Oct	Sun>=22	 1:00s	0	-
 # 1947-1967 - first Sunday in April until first Sunday in winter
 Rule	Iceland	1947	1967	-	Apr	Sun>=1	 1:00s	1:00	S
-# 1949 Oct transition delayed by 1 week
+# 1949 and 1967 Oct transitions delayed by 1 week
 Rule	Iceland	1949	only	-	Oct	30	 1:00s	0	-
 Rule	Iceland	1950	1966	-	Oct	Sun>=22	 1:00s	0	-
 Rule	Iceland	1967	only	-	Oct	29	 1:00s	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Atlantic/Reykjavik	-1:27:24 -	LMT	1837
-			-1:27:48 -	RMT	1908 # Reykjavik Mean Time?
+Zone Atlantic/Reykjavik	-1:28	-	LMT	1908
 			-1:00	Iceland	IS%sT	1968 Apr  7  1:00s
 			 0:00	-	GMT