[tz] Irish Standard Time vs Irish Summer Time

Paul Eggert eggert at cs.ucla.edu
Sat Dec 9 19:14:46 UTC 2017

On 12/09/2017 11:11 AM, Paul Eggert wrote:
> POSIX requires support for UT offsets ranging from -24:00 to 24:59:59

Whoops, wrong value. POSIX actually allows UT offsets from -24:59:59 to 
24:59:59, so POSIX daylight-saving and standard time can differ by 
almost 50 hours in either direction.

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