Ester 8:13

8:13 A copy of the edict was to be presented as law throughout each and every province and made known to all peoples, so that the Jews might be prepared on that ¹  day to avenge themselves from their enemies.

Ester 9:31

9:31 to establish these days of Purim in their proper times, just as Mordecai the Jew and Queen Esther had established, and just as they had established both for themselves and their descendants, matters pertaining to fasting and lamentation.

[8:13]  ¹ tn Heb “this” (so NASB); most English versions read “that” here for stylistic reasons.