This application is a clock. But it is not a common clock, it shows Japanese Traditional Time instead. http://en.wikipedia.org/wiki/Japanese_clock#The_traditional_Japanese_time_system

The source code can be found here: https://github.com/aragaer/jtt_android

Note: Unlike most other applications of the kind, this one does not use network to get sunrise and sunset time, everything is calculated locally.

Want to be a beta-tester? Send me a mail!