'Appointed' in the Bible

Then Esther summoned Hathach from the king’s eunuchs, whom the king had appointed to attend her, and ordered him to go to Mordecai to learn what this was and why it was.

the Jews established and made a custom for themselves and for their descendants and for all those who allied themselves with them, so that they would not fail to celebrate these two days according to their regulation and according to their appointed time annually.

to establish these days of Purim at their appointed times, just as Mordecai the Jew and Queen Esther had established for them, and just as they had established for themselves and for their descendants with instructions for their times of fasting and their lamentations.