diff options
Diffstat (limited to 'timezone/europe')
| -rw-r--r-- | timezone/europe | 65 |
1 files changed, 60 insertions, 5 deletions
diff --git a/timezone/europe b/timezone/europe index 7bb9864733..3f39215bf6 100644 --- a/timezone/europe +++ b/timezone/europe @@ -1,5 +1,7 @@ -# @(#)europe 8.18 # <pre> +# @(#)europe 8.21 +# This file is in the public domain, so clarified as of +# 2009-05-17 by Arthur David Olson. # 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 @@ -2313,11 +2315,64 @@ Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 # mean time in preference to apparent time -- Geneva from 1780 .... # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # From Whitman (who writes ``Midnight?''): -Rule Swiss 1940 only - Nov 2 0:00 1:00 S -Rule Swiss 1940 only - Dec 31 0:00 0 - +# Rule Swiss 1940 only - Nov 2 0:00 1:00 S +# Rule Swiss 1940 only - Dec 31 0:00 0 - # From Shanks & Pottenger: -Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S -Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 - +# Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S +# Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 - + +# From Alois Treindl (2008-12-17): +# I have researched the DST usage in Switzerland during the 1940ies. +# +# As I wrote in an earlier message, I suspected the current tzdata values +# to be wrong. This is now verified. +# +# I have found copies of the original ruling by the Swiss Federal +# government, in 'Eidgen[o]ssische Gesetzessammlung 1941 and 1942' (Swiss +# federal law collection)... +# +# DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am +# DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. +# +# DST began on Monday, 4 May 1942 at 01:00 am +# DST ended on Monday, 5 Oct 1942 at 02:00 am +# +# There was no DST in 1940, I have checked the law collection carefully. +# It is also indicated by the fact that the 1942 entry in the law +# collection points back to 1941 as a reference, but no reference to any +# other years are made. +# +# Newspaper articles I have read in the archives on 6 May 1941 reported +# about the introduction of DST (Sommerzeit in German) during the previous +# night as an absolute novelty, because this was the first time that such +# a thing had happened in Switzerland. +# +# I have also checked 1916, because one book source (Gabriel, Traite de +# l'heure dans le monde) claims that Switzerland had DST in 1916. This is +# false, no official document could be found. Probably Gabriel got misled +# by references to Germany, which introduced DST in 1916 for the first time. +# +# The tzdata rules for Switzerland must be changed to: +# Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S +# Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - +# +# The 1940 rules must be deleted. +# +# One further detail for Switzerland, which is probably out of scope for +# most users of tzdata: +# The zone file +# Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 +# 0:29:44 - BMT 1894 Jun #Bern Mean Time +# 1:00 Swiss CE%sT 1981 +# 1:00 EU CE%sT +# describes all of Switzerland correctly, with the exception of +# the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not +# follow Bern Mean Time but kept its own local mean time. +# To represent this, an extra zone would be needed. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S +Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 0:29:44 - BMT 1894 Jun # Bern Mean Time |