Join us on the great Feast day of Easter. Easter Day, which immediately follows Holy Week and begins with the Easter Vigil, is the great feast day and apogee of the Christian liturgical year: on this day the Resurrection of Jesus Christ is celebrated. It is the first day of the new season of the Great Fifty Days, which runs from Easter Day to Pentecost Sunday. The Resurrection of Christ on Easter Day is the main reason why Christians keep every Sunday as the primary day of religious observance.