Nisan in the Bible

And it came about in the month Nisan, in the twentieth year of King Artaxerxes, that wine was before him, and I took up the wine and gave it to the king. Now I had not been sad in his presence.

In the first month, that 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, that is, the month Adar.