The Passover Seder (English pronunciation: ˈseɪ dəɹ; in Hebrew: סֵדֶר‎ [ˈsedeʁ], meaning "order, arrangement"; and in Yiddish: "seyder") is a Jewish ritual feast that marks the beginning of the Jewish holiday of Passover. It is conducted on the evening of the 15th day of Nisan in the Hebrew calendar throughout the world. This corresponds to late March or April in the Gregorian calendar.