Passover, also known as Pesach, is a significant Jewish holiday observed worldwide, commemorating the liberation of the Jewish people from slavery in ancient Egypt and the Exodus story. It recurs every year, beginning on the 15th day of Nisan in the Hebrew calendar, lasting seven days in Israel and eight days in the diaspora. Key customs include the removal of chametz (leavened foods) from homes, with families engaging in extensive cleaning prior to the holiday. The Passover seder, a ritual dinner held on the first night, features a special plate with symbolic foods and follows an order outlined in the Hagaddah. During the seder, children play an important role by asking the four questions, prompting the recounting of the Exodus story. The holiday is also known as the feast of unleavened bread, reflecting the haste of the Israelites' departure from Egypt, which left no time for their bread to rise.