On 2024-01-06 14:51, Guy Harris via tz wrote: > POSIX's time API has no notion of "gmtoff" and "stdoff". Although that's true for current POSIX, POSIX 202x/D3 does have tm_gmtoff in struct tm, as a result of Austin Group Defect 1533 <https://austingroupbugs.net/view.php?id=1533> which saw steffen and kre as contributors.