What is the major Jewish festival commemorating the liberation from Egypt in ancient times?

The major Jewish festival that commemorates the liberation of the Israelites from slavery in Egypt is Passover, known in Hebrew as "Pesach." This festival lasts for seven or eight days, depending on the Jewish tradition observed, and it typically falls in the spring, around March or April.

During Passover, Jewish families gather to participate in the Seder, a ritual meal that includes the reading of the Haggadah, which tells the story of the Exodus. Traditions during this festival include the removal of all leavened bread (chametz) from the home, symbolizing the haste with which the Israelites left Egypt, as they did not have time for their bread to rise. Passover serves as a time for reflection on themes of freedom, sacrifice, and the importance of remembering one’s history and traditions.