@nprofile1q... @dmi 💽 You don't even need the Etc/ bit, see TZ in
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap08.html#tag_08_03$ TZ=GMT1 date -Is
2026-04-22T20:41:32-01:00
$ TZ=GMT12 date -Is
2026-04-22T09:41:35-12:00
$ TZ=FOO12 date -Is
2026-04-22T09:41:41-12:00
$ TZ=BAR-12 date -Is
2026-04-23T09:41:45+12:00
$
Which can serve to encode the daylight saving stuff directly into TZ but no idea why anyone would do this these days.