From: Adam David <adam@veda.is> To: wollman@uvm-gen.emba.uvm.edu Date: Sat, 6 Nov 1993 21:50:43 +0000 (GMT) Iceland has not changed timezone since 1900 and has not had Summer Time since quite a long time ago, probably before 1970. If you want exact dates for summertime that long ago, I will find this out for you. I'm working on a rewrite of `europe' with a large set of historical data. My current draft (see below) claims that Iceland changed its timezone in 1968. I've taken this claim from Thomas G. Shanks, The international atlas (3rd edition), San Diego: ACS Publications, Inc. (1991). If you have some better data, please let me know. It would be nice to know what time zone abbreviations were used before 1968, since Shanks doesn't say. In the following table I've made up the names `IST', `IDT', `RMT', and `LMT' for Iceland Standard Time, Iceland Daylight Time, Reykjavik Mean Time, and Local Mean Time respectively. # Iceland # # From Adam David <adam@veda.is> (November 6, 1993): # The name of the timezone in Iceland for system / mail / news purposes is GMT. # # From Shanks (1991): # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Iceland 1908 only - Jan 1 0:00 0 S Rule Iceland 1917 1918 - Feb 20 2:00 1:00 D Rule Iceland 1917 only - Oct 25 2:00 0 S Rule Iceland 1918 1919 - Nov 15 2:00 0 S Rule Iceland 1919 only - Feb 19 2:00 1:00 D Rule Iceland 1921 only - Mar 19 2:00 1:00 D Rule Iceland 1921 only - Jun 22 2:00 0 S Rule Iceland 1941 1942 - Mar Sat>=1 2:00 1:00 D Rule Iceland 1941 1942 - Jul 2 2:00 0 S Rule Iceland 1943 1946 - Mar Sun>=1 2:00 1:00 D Rule Iceland 1943 1948 - Oct Sun>=22 2:00 0 S Rule Iceland 1947 1962 - Apr Sun>=1 2:00 1:00 D Rule Iceland 1949 only - Oct 30 2:00 0 S Rule Iceland 1950 only - Oct 22 2:00 0 S # From Paul Eggert <eggert@twinsun.com> (November 10, 1993): # Shanks's ``1953 Oct 26'' is probably a typo for Oct 25. # Likewise, correct Shanks's ``1961 Oct 22'' to Oct 29. Rule Iceland 1951 1967 - Oct Sun>=23 1:00s 0 S Rule Iceland 1963 1968 - Apr Sun>=1 1:00s 1:00 D # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] Zone Atlantic/Iceland/Reykjavik -1:27:24 - LMT 1837 Jan 1 -1:28 - RMT 1908 Jan 1 -1:00 Iceland I%sT 1968 Oct 27 1:00s 0:00 - GMT # This link is for backward compatibility with the old naming convention. Link Atlantic/Iceland/Reykjavik Iceland