TSK · Esther 9:24

They replied to the king,“As for this man who exterminated us and who schemed against us so that we were destroyed and left without status throughout all the borders of Israel–

In the first month(that is, the month of Nisan), in the twelfth year of King Ahasuerus’ reign, pur(that is, the lot) was cast before Haman in order to determine a day and a month. It turned out to be the twelfth month(that is, the month of Adar).