Science / Tides and Currents / Callippic Cycle: A period of four Metonic cycles equal to 76 Julian years, or 27,759 days. Devised by Callippus, a Greek astronomer, about 350 B.C., as a suggested improvement on the Metonic cycle for a period in which new and full Moon would recur on the same day of the year. Taking the length of the synodical month as 29.530,588 days, there are 940 lunations in the Callippic cycle, with about 0.25 day remaining.
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Cycle Verb Synonyms: slow, methodical, careful, unhurried, paced, measured, regular, even, steady, sure, unhesitating, unfaltering, confident
Cycle Noun Synonyms: round, rotation, circle, course, series, sequence, run, succession, pattern
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