Passover is a spring festival that begins in the months of March or April on the Gregorian calendar. Passover starts on the 15th day of the month of Nisan which is on the first night of a full moon after the northern vernal equinox. The 7 or 8 day festival is one of the most important celebrations on the Hebrew calendar commemorating the emancipation of the Israelites from slavery in ancient Egypt. It begins with families gathering together the first night (first 2 nights for many communities outside Israel) for dinner called seder (meaning "order" of "arrangement" in Hebrew) and ends 7 to 8 days later. This year, Passover begins before sundown on Monday, April 22, 2024, and ends after nightfall on April 30, 2024.