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@ -1,4 +1,4 @@ |
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# @(#)europe 8.18 |
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# @(#)europe 8.20 |
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# <pre> |
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# This data is by no means authoritative; if you think you know better, |
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@ -2313,11 +2313,64 @@ Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 |
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# mean time in preference to apparent time -- Geneva from 1780 .... |
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
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# From Whitman (who writes ``Midnight?''): |
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Rule Swiss 1940 only - Nov 2 0:00 1:00 S |
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Rule Swiss 1940 only - Dec 31 0:00 0 - |
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# Rule Swiss 1940 only - Nov 2 0:00 1:00 S |
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# Rule Swiss 1940 only - Dec 31 0:00 0 - |
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# From Shanks & Pottenger: |
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Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S |
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Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 - |
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# Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S |
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# Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 - |
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# From Alois Treindl (2008-12-17): |
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# I have researched the DST usage in Switzerland during the 1940ies. |
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# |
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# As I wrote in an earlier message, I suspected the current tzdata values |
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# to be wrong. This is now verified. |
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# |
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# I have found copies of the original ruling by the Swiss Federal |
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# government, in 'Eidgen[o]ssische Gesetzessammlung 1941 and 1942' (Swiss |
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# federal law collection)... |
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# |
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# DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am |
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# DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. |
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# |
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# DST began on Monday, 4 May 1942 at 01:00 am |
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# DST ended on Monday, 5 Oct 1942 at 02:00 am |
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# |
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# There was no DST in 1940, I have checked the law collection carefully. |
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# It is also indicated by the fact that the 1942 entry in the law |
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# collection points back to 1941 as a reference, but no reference to any |
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# other years are made. |
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# |
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# Newspaper articles I have read in the archives on 6 May 1941 reported |
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# about the introduction of DST (Sommerzeit in German) during the previous |
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# night as an absolute novelty, because this was the first time that such |
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# a thing had happened in Switzerland. |
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# |
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# I have also checked 1916, because one book source (Gabriel, Traite de |
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# l'heure dans le monde) claims that Switzerland had DST in 1916. This is |
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# false, no official document could be found. Probably Gabriel got misled |
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# by references to Germany, which introduced DST in 1916 for the first time. |
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# |
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# The tzdata rules for Switzerland must be changed to: |
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# Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S |
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# Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - |
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# |
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# The 1940 rules must be deleted. |
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# |
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# One further detail for Switzerland, which is probably out of scope for |
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# most users of tzdata: |
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# The zone file |
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# Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 |
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# 0:29:44 - BMT 1894 Jun #Bern Mean Time |
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# 1:00 Swiss CE%sT 1981 |
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# 1:00 EU CE%sT |
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# describes all of Switzerland correctly, with the exception of |
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# the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not |
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# follow Bern Mean Time but kept its own local mean time. |
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# To represent this, an extra zone would be needed. |
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
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Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S |
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Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - |
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# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 |
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0:29:44 - BMT 1894 Jun # Bern Mean Time |
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Tom Lane
17 years ago