[tz] US Sep 30, 1945

Ken Murchison murch at andrew.cmu.edu
Fri Dec 12 15:55:59 UTC 2014


On 12/12/2014 10:18 AM, Lester Caine wrote:
> On 12/12/14 14:48, Paul Eggert wrote:
>> Ken Murchison wrote:
>>> when converting the TZ data into iCalendar VTIMEZONEs with vzic, the
>>> dst->std
>>> transition for 1945 doesn't get coalesced into the recurrence rule for
>>> 1946-1954.
>> That sounds like a good-enough reason to change it.  zic doesn't care, I
>> expect.  Proposed patch attached.
> Silly question. Since the rule IS 1945 only where is the 1946-1954 rule
> it is supposed to match?

Rule    NYC    1921    1954    -    Sep    lastSun    2:00    0    S
Rule    Chicago    1922    1954    -    Sep    lastSun    2:00 0    S
Rule Indianapolis 1941    1954    -    Sep    lastSun    2:00 0    S


I suppose the alternative to changing the US Sep 1945 rule would be to 
have those zones that use the US rules only use the them up to the Aug 
14, 1945 war->peace transition rather than to the end of 1945.

-- 
Kenneth Murchison
Principal Systems Software Engineer
Carnegie Mellon University



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