[tz] Irish Standard Time vs Irish Summer Time
howard.hinnant at gmail.com
Fri Dec 8 18:12:36 UTC 2017
On Dec 8, 2017, at 6:52 AM, Ian Abbott <abbotti at mev.co.uk> wrote:
> On 08/12/17 06:38, Paul Eggert wrote:
>> On 12/05/2017 02:16 AM, Derick Rethans wrote:
>>> No, I meant "Irish Standard Time". Ireland is "odd" because their
>>> standard time is what the rest of the British Isles calls "Summer Time"
>>> (BST). So Ireland uses "Irish Standard Time" and "GMT".
>> Thanks for pointing this out; I was unaware that Ireland observes negative daylight-saving time in winter, instead of positive daylight-saving time in summer. This arguably is clearer than the common practice in North America and Europe, where "standard time" is observed only in a relatively small fraction of the year. I installed the attached proposed patch to fix the commentary along the lines that you suggested, and to change tm_isdst as well. UT offsets and abbreviations are unaffected by this change.
> I'm not sure that switching from positive daylight savings in summer to negative daylight savings in winter is a terribly good idea, as it will probably result in various software headaches.
Yup, it will.
Just updated my tz lib to deal with it.
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