seven days
2 Chronicles 7:8
And solomon maketh the feast at that time seven days, and all Israel with him -- a very great assembly -- from the entering in of Hamath unto the brook of Egypt.
2 Chronicles 7:9
And they make on the eighth day a restraint, because the dedication of the altar they have made seven days, and the feast seven days.
2 Chronicles 30:21-25
21
And the sons of Israel, those found in Jerusalem, make the feast of unleavened things seven days with great joy; and giving praise to Jehovah day by day are the Levites and the priests, with instruments of praise before Jehovah.
22
And Hezekiah speaketh unto the heart of all the Levites, those giving good understanding concerning Jehovah, and they eat the appointed thing seven days; sacrificing sacrifices of peace-offerings, and making confession to Jehovah, God of their fathers.
23
And all the assembly take counsel to keep other seven days, and they keep seven days [with] joy;
24
for Hezekiah king of Judah hath presented to the assembly a thousand bullocks, and seven thousand sheep; and the heads have presented to the assembly bullocks a thousand, and sheep ten thousand; and priests sanctify themselves in abundance.
25
And all the assembly of Judah rejoice, and the priests, and the Levites, and all the assembly, those coming in from Israel, and the sojourners, those coming in from the land of Israel, and those dwelling in Judah,