Esther 9:17-19

17on the thirteenth day of the month Adar; and on the fourteenth of the same they rested, and made it a day of feasting and joy.

18But the Jews that were at Shushan gathered themselves together on the thirteenth [day] thereof, and on the fourteenth thereof; and on the fifteenth of the same they rested, and made it a day of feasting and joy.

19Therefore the Jews of the villages that dwell in the country towns make the fourteenth of the month Adar a day of joy and feasting, and a good day, and on which they send portions one to another.