Calendars and calculations differ The movable date for Easter follows a seemingly straightforward rule: the Sunday following the first full moon on or after the spring equinox. But the two ...

Advertisement Advertisement This year, that Sunday is April 20, but as the lunar calendar changes, so too does Easter’s date, and the holiday can take place on Sundays between March 22 and April ...

The reason lies in how Easter is calculated. According to a formula set at the Council of Nicaea in 325 CE — a historic meeting held in what is now modern-day Turkey and convened by Roman Emperor ...