feat: Convert time zones
For example:
$ TZ=Europe/Oslo date --date='TZ="Pacific/Auckland" 2000-01-01 00:00:00'
Fri 31 Dec 1999 12:00:00 CET
For example:
$ TZ=Europe/Oslo date --date='TZ="Pacific/Auckland" 2000-01-01 00:00:00'
Fri 31 Dec 1999 12:00:00 CET