The Passover Seder (/ˈseɪdər/; Hebrew: סֵדֶר‎ [ˈsedeʁ] 'order, arrangement'; Yiddish: סדר‎ seyder) is a ritual feast that marks the beginning of the Jewish holiday of Passover. It is conducted throughout the world on the eve of the 15th day of Nisan in the Hebrew calendar (i.e., at the start of the 15th; a Hebrew day begins at sunset). The day falls in late March or in April of the Gregorian calendar and the Passover lasts for seven days in Israel and eight days outside Israel. Jews generally observe one or two seders: in Israel, one seder is observed on the first night of Passover; many Jewish diaspora communities hold a seder also on the second night. The Seder is a ritual performed by a community or by multiple generations of a family, involving a retelling of the story of the liberatio