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 https://hebcal.com/h/pesach-2023?uc=ical-flower-mound

Fast of the First Born Torah: Exodus 32:11-14, 34:1-10 https://hebcal.com/h/taanit-bechorot-2023?uc=ical-flower-mound