Paul Smith (9 December 2022 16:22) wrote: > That's probably why it works on my system even though I'm at UTC-0500.
oh, and: that means you're west of Greenwich, so the epoch is your local time 1969-12-31 19:00, so your 1970-01-01 00:00 is firmly in positive time_t. So you had no chance of reproducing the issue; it would only show for someone on MS (in a zone that believes it's) east of Greenwich. (For bonus amusement, Europe/Madrid is CET so does believe it's east of Greenwich, even though Madrid is west of Greenwich.) Eddy.