Cross reference
2 Chronicles 30:23
23 And the whole assembly took counsel to keep other seven days; and they kept `other' seven days with gladness.
1 Kings 8:65
65 So Solomon held the feast at that time, and all Israel with him, a great assembly, from the entrance of Hamath unto the brook of Egypt, before Jehovah our God, seven days and seven days, even fourteen days.
2 Chronicles 7:9
9 And on the eighth day they held a solemn assembly: for they kept the dedication of the altar seven days, and the feast seven days.