Easter

Easter is a celebration of Jesus Christ's return to life after his resurrection, and is held on the first Sunday after the full moon following the first day of Spring. It is the most important holiday for Eastern and Oriental Orthodox Christians. Easter is the main act that emphasizes Christ's ministry on earth- "to defeat death by dying and to purify and exalt humanity by voluntarily assuming and overcoming human frailty." Easter can also be a non-religious holiday; it is also a celebration of feasting.

More information: http://en.wikipedia.org/wiki/Easter