Name: LCD Sun
Rating: 3.8 (12 reviews)
Author: PiotrKwalski

Main function:
1. Day and week counter
2. Sun rise and sunset time based on algorythm  https://edwilliams.org/sunrise_sunset_algorithm.htm
3. Sunrise/sunset timer (select from configurable field)
4. One configurable field
5. Time zone information
6. Status information (alarm, message, phone)
7. Basic activity data
8. Color settings (foreground, background, icons)
9. Sun graphical indicator

Additional info:
Sun features base on Your location, with is updated when watch is synchronized with GPS. You can simply start any activity and wait to GPS is synchronized, then location will be saved, until new will be updated. 
Some settings are updated only when watch face is "on show", so for example to update color settings switch screen on Your watch. 