The Metonic cycle is the

A) 18-year, 11-day period over which the pattern of eclipses repeats.
B) period between successive Easters.
C) 12-month period of a lunar calendar.
D) 19-year period over which the lunar phases occur on about the same dates.
E) 29 1/2-day period of the lunar cycle.


D

Physics & Space Science

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