A problem related to using time zones in the schedule to build jobs periodically:
GMT-10 is the same timezone as US/Hawaii. Both, at 12:00 are 00:00 at CEST Time Zone.
If you set this in the Schedule textarea of a build configuration:
TZ=US/Hawaii 00 12 * * *
The next execution is at 00:00 CEST => OK
But, if you set this:
TZ=Etc/GMT-10 00 12 * * *
The next execution is at 04:00 CEST => WRONG
It seems to be a bug when specifying time zones with GMT-XX.
From https://en.wikipedia.org/wiki/List_of_tz_database_time_zones the bahivour is correct. Etc/GMT-10 has an offset of +10 to GMT.
See also https://en.wikipedia.org/wiki/Tz_database#Area