Passover, the Feast of Unleavened Bread. Also called Chag HaMatzot (the Festival of Matzah), it commemorates the Exodus and freedom of the Israelites from ancient Egypt

Torah: Exodus 22:24-23:19; Numbers 28:19-25

https://hebcal.com/h/pesach-2015?uc=ical-diaspora-2015-2019