# 2.12.9. How frequently are the dates for Easter repeated?

## Description

This article is from the Calendars FAQ, by Claus Tondering claus@tondering.dk with numerous contributions by
others.

# 2.12.9. How frequently are the dates for Easter repeated?

The sequence of Easter dates repeats itself every 532 years in the

Julian calendar. The number 532 is the product of the following

numbers:

19 (the Metonic cycle or the cycle of the Golden Number)

28 (the Solar cycle, see section 2.4)

The sequence of Easter dates repeats itself every 5,700,000 years in

the Gregorian calendar. Calculating this is not as simple as for the

Julian calendar, but the number 5,700,000 turns out to be the product

of the following numbers:

19 (the Metonic cycle or the cycle of the Golden Number)

400 (the Gregorian equivalent of the Solar cycle, see section 2.4)

25 (the cycle used in step 3 when calculating the Epact)

30 (the number of different Epact values)

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