Seder

The Passover Seder /ˈseɪdər/ (Hebrew: סֵדֶר‎ [ˈsedeʁ] 'order, arrangement'; Yiddish: סדר‎ seyder) is a Jewish ritual feast that marks the beginning of the Jewish holiday of Passover. It is conducted throughout the world on the evening of the 15th day of Nisan in the Hebrew calendar (which falls in late March or April of the Gregorian calendar). Passover lasts for 7 days in Israel and 8 days outside of Israel (other than for adherents of Reform Judaism for whom Passover is 7 days regardless of location), with Jews outside of Israel other than Reform Jews holding two Seders (on the evening of the 15th and 16th of Nisan) and Jews in Israel and Reform Jews worldwide holding one Seder (on the 15th of Nisan).

The Seder is a ritual performed by a community or by multiple generations of a family, involving a retelling of the story of the liberation of the Israelites from slavery in ancient Egypt. This story is in the Book of Exodus (Shemot) in The Hebrew Bible. The Seder itself is based on the Biblical verse commanding Jews to retell the story of the Exodus from Egypt: "You shall tell your child on that day, saying, 'It is because of what the LORD did for me when I came out of Egypt.'" (Exodus 13:8) Traditionally, families and friends gather in the evening to read the text of the Haggadah, an ancient work derived from the Mishnah (Pesahim 10). The Haggadah contains the narrative of the Israelite exodus from Egypt, special blessings and rituals, commentaries from the Talmud, and special Passover songs.

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