On this Wikipedia the language links are at the top of the page across from the article title. For how the date of Easter is calculated, easter baked goods Date of Easter. Jewish Passover is on Nisan 15 of its calendar. Astronomical Easter is the first Sunday after the astronomical full moon after the astronomical March equinox as measured at the meridian of Jerusalem according to this WCC proposal.
This is a list of dates for Easter. Therefore, the following day, March 22 and the 81st day of the year, was Easter. It will not fall as early again until 2285, a span of 467 years. The earliest week by international standard reckoning is W12, and the 12th Sunday of the year is also the earliest possible Easter Sunday. In 1943 Easter fell on Sunday, April 25, the 115th day of the year. The second latest date for Easter, April 24 or day 114, occurred in 2011. The last time this occurred before was in 1859 and it will not happen again until 2095—spans of 152 and 84 years.
Easter also occurred on the 114th day of the year on April 23 in 2000, a leap year. Both dates are equivalent to April 25 in the Julian Calendar. 2051 unless these churches change to another calendar. Julian and Gregorian calendars will increase to 14 days. Despite using calendars that are apart by 13 days, Western Easter and Orthodox Easter occasionally fall on the same date, as happened in 2010, 2011, 2014, and 2017.