No details for the computation were specified; these were worked out in practice, a process that took centuries and generated a number of controversies.
It has come to be the first Sunday after the ecclesiastical full moon that occurs on or soonest after 21 March, but calculations vary in East and West.
Easter is linked to the Jewish Passover by much of its symbolism, as well as by its position in the calendar.
The modern English term Easter, cognate with modern Dutch ooster and German Ostern, developed from an Old English word that usually appears in the form Ēastrun, -on, or -an; but also as Ēastru, -o; and Ēastre or Ēostre.
The most widely accepted theory of the origin of the term is that it is derived from the name of a goddess mentioned by the 7th to 8th-century English monk Bede, who wrote that Ēosturmōnaþ (Old English 'Month of Ēostre', translated in Bede's time as "Paschal month") was an English month, corresponding to April, which he says "was once called after a goddess of theirs named Ēostre, in whose honour feasts were celebrated in that month".
In Greek and Latin, the Christian celebration was, and still is, called Πάσχα, Pascha, a word derived from Aramaic פסחא, cognate to Hebrew פֶּסַח (Pesach).
Icon of the Resurrection, with Christ, having kicked down the gates of Hades and pulling Adam and Eve out of the tombs.
Christ is flanked by saints, and Satan, depicted as an old man, is bound and chained.
(See Resurrection of Jesus in Christian art.)Passover, of which it is regarded the Christian fulfillment; Septuagesima, Sexagesima, Quinquagesima, Shrove Tuesday, Ash Wednesday, Clean Monday, Lent, Great Lent, Palm Sunday, Holy Week, Maundy Thursday, Good Friday, and Holy Saturday which lead up to Easter; and Thomas Sunday, Ascension, Pentecost, Trinity Sunday, and Corpus Christi which follow it.
is a festival and holiday celebrating the resurrection of Jesus Christ from the dead, described in the New Testament as having occurred on the third day of his burial after his crucifixion by Romans at Calvary It is the culmination of the Passion of Christ, preceded by Lent (or Great Lent), a forty-day period of fasting, prayer, and penance.
The week before Easter is called Holy Week, and it contains the days of the Easter Triduum, including Maundy Thursday, commemorating the Maundy and Last Supper, In western Christianity, Eastertide, the Easter Season, begins on Easter Sunday and lasts seven weeks, ending with the coming of the fiftieth day, Pentecost Sunday.
In Orthodoxy, the season of Pascha begins on Pascha and ends with the coming of the fortieth day, the Feast of the Ascension.