Comment by sgarland

I got a patch to Debian’s vixie-cron accepted [0], which thus far has been my proudest achievement. It’s tiny and stupid, and should never happen to anyone reasonable, but nevertheless, you can now change your server’s TZ without restarting crond or waiting for a DST shift, and your jobs will fire at the new correct time.

Contributing to the kernel is definitely on my list of things to eventually do.

0: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1019716