[tz] Europe/London Sat Oct 26 23:00:00 1968 UT
Arthur David Olson
arthurdavidolson at gmail.com
Mon Sep 15 05:37:13 UTC 2014
As I understand it, Europe/London switched to a "permanent" one-hour offset
from GMT on 1968-10-27; time was referred to as "British Standard Time"
which, for better or worse, has the same BST abbreviation as "British
Summer Time." Europe/London reverted to the "old" rules on 1971-10-31. My
sense is that Paul is correct and that isdst should be 0 for the 1968-1971
On Mon, Sep 15, 2014 at 1:20 AM, Paul Eggert <eggert at cs.ucla.edu> wrote:
> Looks like isdst should be 1 on
>> Europe/London Sat Oct 26 23:00:00 1968
> The convention is that if clocks are the same all year round and if this
> appears to be intended to be permanent, the isdst flag is zero even if the
> enabling legislation uses phrases like "daylight" or "summer". An example
> of that is the Turks & Caicos change in November.
> My vague impression is that that three-year period you're talking about
> was intended to be permanent. I haven't researched this, though.
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