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The main lunisolar leap cycle in history is the Metonic cycle.

This page lists some notable alternatives.

Comparison table[]

Lunisolar cycles
Lunar cycle Intercalary months Solar cycle Leap days Average days per year Average days per month
19 years: Metonic 7 19 years 5 365.263158 29.531915
76 years: Callippic 28 4 years: Julian 1 365.25 29.530851
304 years: Hipparchic 75 365.2467105 29.530585
117 years 43 351 years 85 365.242165 29.532366
372 years 137 62 years 15 365.241935 29.530537
3720 years 901 365.242204 29.530559
429 years 158 33 years 8 365.24 29.530531
896 years 330 128 years 31 365.242188 29.530500
1404 years 517 351 years 85 365.242165 29.530665
1200 years 442 400 years: Gregorian 97 365.2425 29.530454
5200 years 1915 29.530607
2919 years 1075 417 years 101 365.242206 29.530565
3750 years 1381 1875 years 454 365.242133 29.530584
synodic mean tropical 365.24219 29.530589

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