Solomon had twelve governors over all Israel to provide food for the king and his household. Each one would arrange provisions for one month of the year,
KJV
And Solomon had twelve officers over all Israel, which provided victuals for the king and his household: each man his month in a year made provision.
ASV
And Solomon had twelve officers over all Israel, who provided victuals for the king and his household: each man had to make provision for a month in the year.