'Year' in the Bible

He held a feast in the third year of his reign for all his officials and staff, the army of Persia and Media, the nobles, and the officials from the provinces.

During the year before each young woman’s turn to go to King Ahasuerus, the harem regulation required her to receive beauty treatments with oil of myrrh for six months and then with perfumes and cosmetics for another six months.

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

In the first month, the month of Nisan, in King Ahasuerus’s twelfth year, Pur (that is, the lot) was cast before Haman for each day in each month, and it fell on the twelfth month, the month Adar.

He ordered them to celebrate the fourteenth and fifteenth days of the month Adar every year

the Jews bound themselves, their descendants, and all who joined with them to a commitment that they would not fail to celebrate these two days each and every year according to the written instructions and according to the time appointed.