'Months' in the Bible

The time that David was king in Hebron over the house of Judah was seven years and six months.

At Hebron he reigned over Judah seven years and six months, and in Jerusalem he reigned thirty-three years over all Israel and Judah.

Thus the ark of the Lord remained in the house of Obed-edom the Gittite three months, and the Lord blessed Obed-edom and all his household.

So when they had gone about through the whole land, they came to Jerusalem at the end of nine months and twenty days.

So Gad came to David and told him, and said to him, “Shall seven years of famine come to you in your land? Or will you flee three months before your foes while they pursue you? Or shall there be three days’ pestilence in your land? Now consider and see what answer I shall return to Him who sent me.”