Sunday, April 4, 20021year.

2. The origin of Easter:

Easter is a festival to commemorate the resurrection of Jesus Christ, which is celebrated in western Christian countries. In western church tradition, the first Sunday after the first full moon after the vernal equinox is Easter. The Eastern Church stipulates that if the full moon falls on a Sunday, Easter will be postponed for another week. Therefore, the festival is roughly between March 22 and April 25.