Suntimes - Android app (and widget collection) that displays sunlight and moonlight times for a given location.
SunIZup - SunIZup helps you to know the timings of the various Sunlight phases including the Golden Hour and...
Alpenglow - Never miss a incredible looking sunrise or sunset again
Rise: Track Sleep & Circadian - Wake up & fall asleep better
Solar Clock: Circadian Rhythm - Solar Clock: Circadian Rhythm syncs the Solar time with your Local time and shows important events (Sunrise, Waking up, Breakfast, Lunch, Solar Noon, Sport, Sunset, Sleep Time, …) based on Circadian rhythm.
Sol: Sun Clock - Get reminded when it's sunrise or sunset, wherever you travel!