TSK · Leviticus 23:39

Speak unto the children of Israel, saying, In the seventh month, in the first [day] of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.

Seven days ye shall offer an offering made by fire unto the LORD: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the LORD: it [is] a solemn assembly; [and] ye shall do no servile work [therein].