'Of The Month' in the Bible

For the Jews in Shushan gathered themselves on the fourteenth day also of the month Adar, and killed three hundred men at Shushan. But they did not lay their hands on the spoil.

And on the thirteenth day of the month Adar, and on the fourteenth day of the same, they rested and made it a day of feasting and gladness.

Therefore the Jews of the villages, who lived in the unwalled towns, made the fourteenth day of the month Adar a day of gladness and feasting, and a good day, and a day of sending portions to one another.

to establish among them that they should keep the fourteenth day of the month Adar, and the fifteenth day of the same, yearly,