Local history with Monica McGill: Ancient formula used to calculate Easter Sunday
The Clondalkin Fragment, 701-800AD

Local history with Monica McGill: Ancient formula used to calculate Easter Sunday

EASTER Sunday occurs on a different date each year, between 22nd March and 25th April. An ancient formula is used to calculate its occurrence, based on the moon’s phases and the sun’s movements.

These elements remain part of our ordinary yearly calendar.

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