Clocks around the world

Invalid date

New in V1.40:
- Set target/max SDK to version Android N, min SDK set to Android 1.6 (before it was 1.5)
- Allow split screen mode, size of clocks and initial repaint needs some more slight changes, consider onStart/stop instead of onPause/resume to keep activity run in split mode

New in V1.36:
- Fix weekday translation (cn)
- Indicate active DST