'Year of' in the Bible

In the third year of his reign, he gave a banquet for all his officials and ministers, and the military leaders of Persia and Media, the nobles, and the provincial officials were present.

Esther was taken to King Ahasuerus to his royal palace in the tenth month, which is the month Tebeth, in the seventh year of his reign.

In the twelfth year of the reign of King Ahasuerus, in the first month (the month Nisan), the (that is, the lot) was cast in Haman's presence to determine the best day and month to carry out his plot. The lot indicated the twelfth month, the month Adar.