How often does Easter Sunday?
Easter falls on the first Sunday after the full moon that happens on or next after the March equinox (March 21). The extreme dates for Easter are March 22 (in the years 1818 and 2285) and April 25 (in the years 1886, 1943, 2038). 5,700,000 years are required for cyclical recurrence of Gregorian Calendar Easter dates. The most common of the 5,700,000 dates is April 19. Crazy, huh??? It’s fallen on my birthday once in my lifetime and I am ever so much more than 20. (times 2 add 4) I have no idea what the formula is, but you can find more specifically by looking at this website: http://www.carnaval.