What timezone?
A small command line tool that shows times in timezones you're interested in.
Your computers local timezone and UTC:
$ wtz --timezones UTC
+-----------+-------+
| MELBOURNE | UTC |
+-----------+-------+
| 00:00 | 14:00 |
| 01:00 | 15:00 |
| 02:00 | 16:00 |
| 03:00 | 17:00 |
| 04:00 | 18:00 |
| 05:00 | 19:00 |
| 06:00 | 20:00 |
| 07:00 | 21:00 |
| 08:00 | 22:00 |
| 09:00 | 23:00 |
| 10:00 | 00:00 |
| 11:00 | 01:00 |
| 12:00 | 02:00 |
| 13:00 | 03:00 |
| 14:00 | 04:00 |
| 15:00 | 05:00 |
| 16:00 | 06:00 |
| 17:00 | 07:00 |
| 18:00 | 08:00 |
| 19:00 | 09:00 |
| 20:00 | 10:00 |
| 21:00 | 11:00 |
| 22:00 | 12:00 |
| 23:00 | 13:00 |
+-----------+-------+
Your local timezone and a list of other timezones:
$ wtz --timezones Europe/Madrid,America/New_York,America/Argentina/Buenos_Aires,UTC
+-----------+--------+----------+--------------+-------+
| MELBOURNE | MADRID | NEW YORK | BUENOS AIRES | UTC |
+-----------+--------+----------+--------------+-------+
| 00:00 | 16:00 | 10:00 | 11:00 | 14:00 |
| 01:00 | 17:00 | 11:00 | 12:00 | 15:00 |
| 02:00 | 18:00 | 12:00 | 13:00 | 16:00 |
| 03:00 | 19:00 | 13:00 | 14:00 | 17:00 |
| 04:00 | 20:00 | 14:00 | 15:00 | 18:00 |
| 05:00 | 21:00 | 15:00 | 16:00 | 19:00 |
| 06:00 | 22:00 | 16:00 | 17:00 | 20:00 |
| 07:00 | 23:00 | 17:00 | 18:00 | 21:00 |
| 08:00 | 00:00 | 18:00 | 19:00 | 22:00 |
| 09:00 | 01:00 | 19:00 | 20:00 | 23:00 |
| 10:00 | 02:00 | 20:00 | 21:00 | 00:00 |
| 11:00 | 03:00 | 21:00 | 22:00 | 01:00 |
| 12:00 | 04:00 | 22:00 | 23:00 | 02:00 |
| 13:00 | 05:00 | 23:00 | 00:00 | 03:00 |
| 14:00 | 06:00 | 00:00 | 01:00 | 04:00 |
| 15:00 | 07:00 | 01:00 | 02:00 | 05:00 |
| 16:00 | 08:00 | 02:00 | 03:00 | 06:00 |
| 17:00 | 09:00 | 03:00 | 04:00 | 07:00 |
| 18:00 | 10:00 | 04:00 | 05:00 | 08:00 |
| 19:00 | 11:00 | 05:00 | 06:00 | 09:00 |
| 20:00 | 12:00 | 06:00 | 07:00 | 10:00 |
| 21:00 | 13:00 | 07:00 | 08:00 | 11:00 |
| 22:00 | 14:00 | 08:00 | 09:00 | 12:00 |
| 23:00 | 15:00 | 09:00 | 10:00 | 13:00 |
+-----------+--------+----------+--------------+-------+
Same command above, but for a future date:
$ wtz --timezones Europe/Madrid,America/New_York,America/Argentina/Buenos_Aires,UTC --date 2022-01-01
+-----------+--------+----------+--------------+-------+
| MELBOURNE | MADRID | NEW YORK | BUENOS AIRES | UTC |
+-----------+--------+----------+--------------+-------+
| 00:00 | 14:00 | 08:00 | 10:00 | 13:00 |
| 01:00 | 15:00 | 09:00 | 11:00 | 14:00 |
| 02:00 | 16:00 | 10:00 | 12:00 | 15:00 |
| 03:00 | 17:00 | 11:00 | 13:00 | 16:00 |
| 04:00 | 18:00 | 12:00 | 14:00 | 17:00 |
| 05:00 | 19:00 | 13:00 | 15:00 | 18:00 |
| 06:00 | 20:00 | 14:00 | 16:00 | 19:00 |
| 07:00 | 21:00 | 15:00 | 17:00 | 20:00 |
| 08:00 | 22:00 | 16:00 | 18:00 | 21:00 |
| 09:00 | 23:00 | 17:00 | 19:00 | 22:00 |
| 10:00 | 00:00 | 18:00 | 20:00 | 23:00 |
| 11:00 | 01:00 | 19:00 | 21:00 | 00:00 |
| 12:00 | 02:00 | 20:00 | 22:00 | 01:00 |
| 13:00 | 03:00 | 21:00 | 23:00 | 02:00 |
| 14:00 | 04:00 | 22:00 | 00:00 | 03:00 |
| 15:00 | 05:00 | 23:00 | 01:00 | 04:00 |
| 16:00 | 06:00 | 00:00 | 02:00 | 05:00 |
| 17:00 | 07:00 | 01:00 | 03:00 | 06:00 |
| 18:00 | 08:00 | 02:00 | 04:00 | 07:00 |
| 19:00 | 09:00 | 03:00 | 05:00 | 08:00 |
| 20:00 | 10:00 | 04:00 | 06:00 | 09:00 |
| 21:00 | 11:00 | 05:00 | 07:00 | 10:00 |
| 22:00 | 12:00 | 06:00 | 08:00 | 11:00 |
| 23:00 | 13:00 | 07:00 | 09:00 | 12:00 |
+-----------+--------+----------+--------------+-------+
Or other timezones, not including your local timezone, with the first timezone listed being the main timezone starting at 00:00:
$ wtz --timezones Portugal,Singapore,Indian/Cocos,America/Montreal --include-local-timezone=false
+----------+-----------+-------+----------+
| PORTUGAL | SINGAPORE | COCOS | MONTREAL |
+----------+-----------+-------+----------+
| 00:00 | 07:00 | 05:30 | 19:00 |
| 01:00 | 08:00 | 06:30 | 20:00 |
| 02:00 | 09:00 | 07:30 | 21:00 |
| 03:00 | 10:00 | 08:30 | 22:00 |
| 04:00 | 11:00 | 09:30 | 23:00 |
| 05:00 | 12:00 | 10:30 | 00:00 |
| 06:00 | 13:00 | 11:30 | 01:00 |
| 07:00 | 14:00 | 12:30 | 02:00 |
| 08:00 | 15:00 | 13:30 | 03:00 |
| 09:00 | 16:00 | 14:30 | 04:00 |
| 10:00 | 17:00 | 15:30 | 05:00 |
| 11:00 | 18:00 | 16:30 | 06:00 |
| 12:00 | 19:00 | 17:30 | 07:00 |
| 13:00 | 20:00 | 18:30 | 08:00 |
| 14:00 | 21:00 | 19:30 | 09:00 |
| 15:00 | 22:00 | 20:30 | 10:00 |
| 16:00 | 23:00 | 21:30 | 11:00 |
| 17:00 | 00:00 | 22:30 | 12:00 |
| 18:00 | 01:00 | 23:30 | 13:00 |
| 19:00 | 02:00 | 00:30 | 14:00 |
| 20:00 | 03:00 | 01:30 | 15:00 |
| 21:00 | 04:00 | 02:30 | 16:00 |
| 22:00 | 05:00 | 03:30 | 17:00 |
| 23:00 | 06:00 | 04:30 | 18:00 |
+----------+-----------+-------+----------+
See examples/wtz.json as an example config file which can be copied to ~/.config/wtz/wtz.json.
Inspired by wtftz.sh.
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