'Year' in the Bible

in the third year of his reign, he made a feast unto all his princes and his servants; the power of Persia and Media, the nobles and princes of the provinces, being before him;

So Esther was taken unto king Ahasuerus into his house royal in the tenth month, which is the month Tebeth, in the seventh year of his reign.

In the first month, which is the month Nisan, in the twelfth year of king Ahasuerus, they cast Pur, that is, the lot, before Haman from day to day, and from month to month, to the twelfth month , which is the month Adar.

the Jews ordained, and took upon them, and upon their seed, and upon all such as joined themselves unto them, so that it should not fail, that they would keep these two days according to the writing thereof, and according to the appointed time thereof, every year;