ChristianAnswers.Net WebBible Encyclopedia
(Isa. 1:13), the convocation on the eighth day of the Feast of Tabernacles (Lev. 23:36; Num. 29:35, Revised Version, “solemn assembly;” marginal note, “closing festival”)
It is the name given also to the convocation held on the seventh day of the Passover (Deut. 16:8).