New Moon celebrations took place on the first day of each lunar month (Numbers 28:11–15). These days included sacrifices, special meals, and rest from work.
The annual festivals included:
Passover,
the Feast of Unleavened Bread,
the Feast of Weeks, and
the Feast of Tabernacles (Numbers 28:16–29:39; Deuteronomy 16:1–17).