'Month' in the Bible
Solomon had twelve district governors appointed throughout Israel who acquired supplies for the king and his palace. Each was responsible for one month in the year.
The district governors acquired supplies for King Solomon and all who ate in his royal palace. Each was responsible for one month in the year; they made sure nothing was lacking.
He sent them to Lebanon in shifts of 10,000 men per month. They worked in Lebanon for one month, and then spent two months at home. Adoniram was supervisor of the work crews.
In the four hundred and eightieth year after the Israelites left Egypt, in the fourth year of Solomon's reign over Israel, during the month Ziv (the second month), he began building the Lord's temple.
In the month Ziv of the fourth year of Solomon's reign the foundation was laid for the Lord's temple.
In the eleventh year, in the month Bul (the eighth month) the temple was completed in accordance with all its specifications and blueprints. It took seven years to build.
All the men of Israel assembled before King Solomon during the festival in the month Ethanim (the seventh month).
Jeroboam inaugurated a festival on the fifteenth day of the eighth month, like the festival celebrated in Judah. On the altar in Bethel he offered sacrifices to the calves he had made. In Bethel he also appointed priests for the high places he had made.
On the fifteenth day of the eighth month (a date he had arbitrarily chosen) Jeroboam offered sacrifices on the altar he had made in Bethel. He inaugurated a festival for the Israelites and went up to the altar to offer sacrifices.