[tz] [PROPOSED PATCH 2/4] Phase out invented abbrs for Antarctica
eggert at cs.ucla.edu
Wed Aug 24 01:25:53 UTC 2016
Alexander Belopolsky wrote:
> On Tue, Aug 23, 2016 at 7:55 PM, Paul Eggert <eggert at cs.ucla.edu> wrote:
>> + ... For Europe/Moscow the
>> + invented abbreviation MSM was replaced by +05, whereas MSK and MSD
>> + were kept as they are not our invention and are widely used.
> What's the difference between MSM (Midsummer) and MDST (Moscow Double
> Summer Time)? Both seem to be +05 = MSK + 2, but got different
The former differs from UT by an integer number of hours, the latter does not.
In the current go-round I am looking at integer-hour offsets, as they are the
most important for contemporaneous time stamps. Addressing the non-integer
offsets will be a bit more tricky and I plan to take it up later.
> BTW, the earlier Soviet decrees have been collected on the istmat.info web
> site. For example, (transition date: url):
> Dec 28, 1917: http://istmat.info/node/28137
> May 31, 1918: http://istmat.info/node/30001
> May 31, 1919: http://istmat.info/node/37949
> Feb 14, 1921: http://istmat.info/node/45840
> May 20, 1921: http://istmat.info/node/45949
> You may want to reference these documents in the source files.
Thanks for the pointers. These indicate that our old abbreviations are dubious
too. The first decree talks about "Петроградского гражданского времени"
(Petrograd civil time), for example, and doesn't give DST a particular name. For
now, I added them to the commentary by installing the attached experimental patch.
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