Easter, also known as Pascha, the Feast of the Resurrection, the Sunday of the Resurrection, or Resurrection Day, is the most important religious feast of the Christian liturgical year, observed between late March and late April. It celebrates the resurrection of Jesus, which his followers believe occurred on the third day after his death by crucifixion some time in the period AD 27 to 33 (see Good Friday). In the Roman Catholic Church, Easter is actually an eight-day feast called the Octave of Easter. Easter also refers to the season of the church year, lasting for fifty days, from Easter Sunday through Pentecost.
In Western Christianity, Easter always falls on a Sunday from March 22 to April 25 inclusive. The following day, Easter Monday, is a legal holiday in many countries with predominantly Christian traditions. In Eastern Christianity, Easter falls between April 4 and May 8 between 1900 and 2100 based on the Gregorian date. As with many other Christian dates, the celebration of Easter extends beyond the church. Since its origins, it has been a time of celebration and feasting. Today it is commercially important, seeing wide sales of greeting cards and confectionery such as chocolate Easter eggs, marshmallow bunnies, Peeps, and jelly beans.