Skyclock(r) can be described as the most powerful Sun calculator for sunrise, sunset and twilight hours. It calculates exactly the location you are. Golfers, pilots, photographers hunter, construction supervisors fishing or camp, hike and plan outdoor activities, and those who arrange their lives around sunset and sunrise can all benefit from Skyclock(r).
Skyclock(r) will show you ‘useful Twilight’ to allow you to prolong, or plan your day. Twilight is the period between the hours of day and night, when light is available before sunrise and after sunset. The times of sunset and sunrise change each day and depend on where you are.