Why do Easter and Passover fall on different days?
Originally, Easter and Passover were on the same say. Due to some of the calendar adjustments and differences between the Jewish and Julian calendars, Easter now usually falls on a different day than Passover. Passover and Easter (or correctly, the Feast of Unleavened Bread) should both be celebrated during the first part of April (the 14th day of Nisan on the Jewish calendar) around the full moon period of the month, since the Jewish calendar is based on lunar time.