Wherefore
1 Kings 8:2 And all the men of Israel assembled themselves to king Solomon at the feast in the month Ethanim, which is the seventh month.
in the feast That is, as the Targumist observes, in the feast of tabernacles, which was held in the seventh month of the ecclesiastical year, which was called Ethanim.
2 Chronicles 7:8-10 Also at the same time Solomon kept the feast seven days, and all Israel with him, a very great congregation...
Leviticus 23:34-36 Speak to the children of Israel, saying...