Alpenglow - Never miss a incredible looking sunrise or sunset again
SunCalc - Find out where the sun will be at any time in any location
Natural Hour - A roman timekeeping add-on for Suntimes.
Solaris Sky Calendar - An astronomy calendar right in your pocket
Sol: Sun Clock - Get reminded when it's sunrise or sunset, wherever you travel!
CIRCADIAN Rhythm & Sun Clock - Circadian provides you with reminders & alarms to operate on your optimal biological schedule. Start sleeping, waking, eating, fasting, exercising and working when you are meant to.