'Year' in the Bible

As for the Hebronites, Jerijah the chief (these Hebronites were investigated according to their genealogies and fathers’ households, in the fortieth year of David’s reign, and men of outstanding capability were found among them at Jazer of Gilead)

Now this is the enumeration of the sons of Israel, the heads of fathers’ households, the commanders of thousands and of hundreds, and their officers who served the king in all the affairs of the divisions which came in and went out month by month throughout all the months of the year, each division numbering 24,000: