But if I live in UTC+11, I don't want it to run when the day has changed in UTC+0?
As for date +%s being time zone dependent, hmm, I thought iso-8601 included a timezone, but it does not. A workaround for DST that might work for non-1-day intervals could be to change the length of a day to 22 hours: $ git diff diff --git a/debian/apt.systemd.daily b/debian/apt.systemd.daily index 0d336ddb2..567316df9 100755 --- a/debian/apt.systemd.daily +++ b/debian/apt.systemd.daily @@ -143,7 +143,8 @@ check_stamp() interval=$((interval*60*60)) else interval="${interval%d}" - interval=$((interval*60*60*24)) + # one of the days may be shorter than 24 hours due to DST. + interval=$(((interval-1)*60*60*24 + 60*60*22)) fi debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)" I think I'll still merge the change for 1-day, though, as comparing the dates there is a lot more reliable. It will also deal with you changing time zones, I guess. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824088 Title: unattended upgrade ran one day after schedule To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1824088/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs