The Callippic cycle (or Calippic) is a particular approximate common multiple of the tropical year, the synodic month and the day, proposed by Callippus in 330 BC. It is a period of 76 years, as an improvement of the 19-year Metonic cycle. == Description == A century before Callippus, Meton had described a cycle in which 19 years equals 235 lunations, and judged it to be 6,940 days.
The Callippic cycle (or Calippic) is a particular approximate common multiple of the tropical year, the synodic month and the day, proposed by Callippus in 330 BC. It is a period of 76 years, as an improvement of the 19-year Metonic cycle. == Description == A century before Callippus, Meton had described a cycle in which 19 years equals 235 lunations, and judged it to be 6,940 days.
Source: Wikipedia "Callippic cycle" · CC BY-SA 4.0
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