I like that you can show different time zones on the watch. But the labels are very limited and don't really reflect the time that I want to show. For example for IST ( India Standard Time ) has as label Sri Lanka. So I see some options how this can be fixed.
1) Show all most popular time zones ( https://www.timeanddate.com/worldclock/?sort=2 )
2) Give the option to create own labels ( 3 letter code + long name )
3) Use the timezone available on the device for example use the timezones available on Android.