Feast of Booths. Also called the Feast of Tabernacles, the seven-day holiday is one of the Three Pilgrimage Festivals (Hebrew: ืฉืืืฉ ืจืืืื, shalosh regalim)
Torah: Numbers 29:17-25, 29:17-22
https://hebcal.com/h/sukkot-2026?uc=ical-diaspora
