Deleted Added
full compact
europe (183066) europe (187588)
1# @(#)europe 8.18
1# @(#)europe 8.20
2# <pre>
3
4# This data is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@elsie.nci.nih.gov for general use in the future).
7
8# From Paul Eggert (2006-03-22):
9# A good source for time zone historical data outside the U.S. is

--- 2298 unchanged lines hidden (view full) ---

2308
2309# Switzerland
2310# From Howse:
2311# By the end of the 18th century clocks and watches became commonplace
2312# and their performance improved enormously. Communities began to keep
2313# mean time in preference to apparent time -- Geneva from 1780 ....
2314# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2315# From Whitman (who writes ``Midnight?''):
2# <pre>
3
4# This data is by no means authoritative; if you think you know better,
5# go ahead and edit the file (and please send any changes to
6# tz@elsie.nci.nih.gov for general use in the future).
7
8# From Paul Eggert (2006-03-22):
9# A good source for time zone historical data outside the U.S. is

--- 2298 unchanged lines hidden (view full) ---

2308
2309# Switzerland
2310# From Howse:
2311# By the end of the 18th century clocks and watches became commonplace
2312# and their performance improved enormously. Communities began to keep
2313# mean time in preference to apparent time -- Geneva from 1780 ....
2314# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2315# From Whitman (who writes ``Midnight?''):
2316Rule Swiss 1940 only - Nov 2 0:00 1:00 S
2317Rule Swiss 1940 only - Dec 31 0:00 0 -
2316# Rule Swiss 1940 only - Nov 2 0:00 1:00 S
2317# Rule Swiss 1940 only - Dec 31 0:00 0 -
2318# From Shanks & Pottenger:
2318# From Shanks & Pottenger:
2319Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
2320Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
2319# Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
2320# Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
2321
2322# From Alois Treindl (2008-12-17):
2323# I have researched the DST usage in Switzerland during the 1940ies.
2324#
2325# As I wrote in an earlier message, I suspected the current tzdata values
2326# to be wrong. This is now verified.
2327#
2328# I have found copies of the original ruling by the Swiss Federal
2329# government, in 'Eidgen[o]ssische Gesetzessammlung 1941 and 1942' (Swiss
2330# federal law collection)...
2331#
2332# DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am
2333# DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am.
2334#
2335# DST began on Monday, 4 May 1942 at 01:00 am
2336# DST ended on Monday, 5 Oct 1942 at 02:00 am
2337#
2338# There was no DST in 1940, I have checked the law collection carefully.
2339# It is also indicated by the fact that the 1942 entry in the law
2340# collection points back to 1941 as a reference, but no reference to any
2341# other years are made.
2342#
2343# Newspaper articles I have read in the archives on 6 May 1941 reported
2344# about the introduction of DST (Sommerzeit in German) during the previous
2345# night as an absolute novelty, because this was the first time that such
2346# a thing had happened in Switzerland.
2347#
2348# I have also checked 1916, because one book source (Gabriel, Traite de
2349# l'heure dans le monde) claims that Switzerland had DST in 1916. This is
2350# false, no official document could be found. Probably Gabriel got misled
2351# by references to Germany, which introduced DST in 1916 for the first time.
2352#
2353# The tzdata rules for Switzerland must be changed to:
2354# Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
2355# Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
2356#
2357# The 1940 rules must be deleted.
2358#
2359# One further detail for Switzerland, which is probably out of scope for
2360# most users of tzdata:
2361# The zone file
2362# Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
2363# 0:29:44 - BMT 1894 Jun #Bern Mean Time
2364# 1:00 Swiss CE%sT 1981
2365# 1:00 EU CE%sT
2366# describes all of Switzerland correctly, with the exception of
2367# the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not
2368# follow Bern Mean Time but kept its own local mean time.
2369# To represent this, an extra zone would be needed.
2370
2371# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2372Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
2373Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
2321# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2322Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
2323 0:29:44 - BMT 1894 Jun # Bern Mean Time
2324 1:00 Swiss CE%sT 1981
2325 1:00 EU CE%sT
2326
2327# Turkey
2328

--- 266 unchanged lines hidden ---
2374# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2375Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
2376 0:29:44 - BMT 1894 Jun # Bern Mean Time
2377 1:00 Swiss CE%sT 1981
2378 1:00 EU CE%sT
2379
2380# Turkey
2381

--- 266 unchanged lines hidden ---