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Calippic period

Source : Webster's Revised Unabridged Dictionary (1913)

Calippic \Ca*lip"pic\, a.
   Of or pertaining to Calippus, an Athenian astronomer.

   {Calippic period}, a period of seventy-six years, proposed by
      Calippus, as an improvement on the Metonic cycle, since
      the 6940 days of the Metonic cycle exceeded 19 years by
      about a quarter of a day, and exceeded 235 lunations by
      something more.
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