Passover is a major Jewish holiday that celebrates the exodus of the Israelites from slavery in Egypt, which occurs on the 15th day of the Hebrew month of Nisan, the first month of Aviv, or spring. The word Passover can also refer to the Korban Pesach, the paschal lamb that was offered when the Temple in Jerusalem stood; to the Passover Seder, the ritual meal on Passover night; or to the Feast of Unleavened Bread. Passover is traditionally celebrated in the Land of Israel for seven days based on the concept of yom tov sheni shel galuyot.
