Provide names and the UTC offsets for up to three other timezones in the app store. These are stored in a json file on your watch. UTC offsets can be decimal (e.g., 5.5 for India).
The clock does not handle summer time / daylight saving time changes automatically. If one of your three locations changes its UTC offset, you can simply change the setting in the app store and update. Currently the clock only supports 24 hour time format for the additional time zones.
Based on the great work of "World Clock - 4 time zones". Made by [Scott Hale](https://www.github.com/computermacgyver), based upon the [Simple Clock](https://github.com/espruino/BangleApps/tree/master/apps/sclock).