Easter 2013 falls on March 31st, with Good Friday on March 29th. Christians celebrate Good Friday as the day Jesus was crucified and Easter Sunday as the day he was resurrected. The date of Easter is calculated based on the first ecclesiastical full moon on or after March 21st, and can fall between March 22nd and April 25th. Easter is an important holiday for Christians, as they believe it commemorates Jesus' resurrection, which is a core principle of Christianity. Many secular traditions are also associated with Easter, such as Easter egg hunts and gifts from the Easter Bunny.