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Definitions Rise, set and twilight definitions.
Lengths of longest days and nights, and shortest days and nights are also available . The Old Farmer's Almanac Sun and Moon rise and set information from North America's oldest continuously published periodical. Sunrise and Sunset Calculator Database contains over 130,000 U.S. locations including the Virgin Islands and Puerto Rico. International city functionality should be added soon. Complete sun and moon data for one day is also available .