Sukkot is the third of the three "Pilgrim Festivals" in the Jewish tradition (the other two are Passover and Shavuot). While Passover is celebrated in memory of the exodus from Egypt, and Shavuot celebrates the giving of the Torah at Mt. Sinai, Sukkot is a celebration in memory of the huts in which Moses and the Israelites lived in the desert for 40 years.