Origin of Metonic cycleafter Meton, Athenian astronomer (5th circa )
Metonic cycleMe·ton·ic cycle
Origin of Metonic cycleAfter Meton (fl. fifth century BC), Athenian astronomer
(plural Metonic cycles)
- (astronomy, calendar studies) A particular approximate common multiple of the tropical year and the synodic month; in other words, the 19-year period over which the lunar phases occur on the same dates.
- According to the Metonic cycle, a lunar calendar begins on the same solar date every 19 years.