The Paschal Full Moon can vary as much as two days from the date of the actual full moon, with dates ranging from March 21 to April This was partly why the dates were seldom the same. Easter and its related holidays do not fall on a fixed date in either the Gregorian or Julian calendars, making them movable holidays. The dates, instead, are based on a lunar calendar very similar to the Hebrew Calendar.
This complicates the matter, due to the inaccuracy of the Julian calendar, and the 13 days that have accrued since the year A. Additionally, in keeping with the rule established by the First Ecumenical Council of Nicaea, the Eastern Orthodox Church adhered to the tradition that Easter must always fall after the Jewish Passover since the resurrection of Christ happened after the celebration of Passover. Eventually, the Orthodox Church came up with an alternative to calculating Easter based on the Gregorian calendar and Passover, by developing a year cycle, as opposed to the Western Church's year cycle.
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Measure ad performance. Select basic ads. How is the date determined each year? Easter falls on the first Sunday after the Full Moon date , based on mathematical calculations, that falls on or after March Although Easter is liturgically related to the beginning of spring in the Northern Hemisphere March equinox and the Full Moon , its date is not based on the actual astronomical date of either event.
Both dates may coincide with the dates of the astronomical events, but in some years, they don't. In years in which the Church's March equinox and Paschal Full Moon dates do not coincide with the astronomical dates of these events, there may be some confusion about the date of Easter. In , for example, the March equinox in the Western Hemisphere happened on Wednesday, March 20 , while the first Full Moon in spring was on Thursday, March 21 in many time zones. If the Church followed the timing of these astronomical events, Easter would have been celebrated on March 24, the Sunday after the Full Moon on March However, the Full Moon date in March specified by the Church's lunar calendar, also called the ecclesiastical Full Moon, was March 20, —one day before the ecclesiastical date of the March equinox, March Unlike Christmas , the date of Easter is subject to change, as its date is determined by a lunisolar calendar.
So when is Easter, why does its date vary and how is it celebrated? Easter marks the end of the day period of Lent , during which those who observe the festival abstain from everyday luxuries such as rich foods. This year, Easter Sunday is taking place on Sunday 4 April. Much like other religious events such as the Hindu celebration of Diwali and the Jewish festival of Rosh Hashanah , Easter is a moveable feast.
From then on the matter grew increasingly complex. To establish some consistency, the early church founders wanted to keep the observance of Easter in correlation to the Jewish Passover. Because the death, burial and resurrection of Jesus Christ happened after Passover, they wanted Easter to always be celebrated following Passover. Because the Jewish holiday calendar is based on solar and lunar cycles, each feast day is movable, with dates shifting from year to year.
Now, from here, the explanation grows more complicated. Today in the Western Christianity world, Easter is always celebrated on the Sunday immediately following the Paschal Full Moon date of the year.
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