Astronomy
Tools about the Sun, the Moon, the planets and the night sky, with the astronomy behind every number explained in plain words.
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Utilities
- Moon phaseThe Moon's phase right now or on any date, with how much of it is lit and the next new and full moon., private, runs on your deviceDate & timeCalculatorReference
- Sunrise and sunsetSunrise, sunset, solar noon, day length and twilight for any place and date, from its coordinates., private, runs on your deviceDate & timeCalculatorReference
Astronomy tools use published formulas and data, and explain each result in plain words.