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 13:17-15:26; Numbers28:19-25
Haftarah: II Samuel 22:1-51
https://hebcal.com/h/pesach-2028?uc=ical-diaspora