And on the fifteenth day of this month is the feast: seven days shall unleavened bread be eaten.

Also on the day of the first fruits, when you bring a new grain offering unto the LORD, at your Feast of Weeks, you shall have a holy convocation; you shall do no regular work:

And on the fifteenth day of the seventh month you shall have a holy convocation; you shall do no regular work, and you shall keep a feast unto the LORD seven days: