Suntimes - Android app (and widget collection) that displays sunlight and moonlight times for a given location.
Sun Surveyor - Sun Surveyor calculates Sun and Moon Positions, Sunrise & Sunset and Moonrise & Moonset...
SunCalc - Find out where the sun will be at any time in any location
Alpenglow - Never miss a incredible looking sunrise or sunset again
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.