'Thirteenth' in the Bible

So the royal scribes were summoned in the first month, on the thirteenth day of the month. Everything Haman commanded was written to the king's satraps and governors who were in every province and to the officials of every people, province by province according to its script and people by people according to its language. In the name of King Ahasuerus it was written and sealed with the king's signet ring.

Letters were sent by the runners to all the king's provinces stating that they should destroy, kill, and annihilate all the Jews, from youth to elderly, both women and children, on a particular day, namely the thirteenth day of the twelfth month (that is, the month of Adar), and to loot and plunder their possessions.

This was to take place on a certain day throughout all the provinces of King Ahasuerus -- namely, on the thirteenth day of the twelfth month (that is, the month of Adar).

In the twelfth month (that is, the month of Adar), on its thirteenth day, the edict of the king and his law were to be executed. It was on this day that the enemies of the Jews had supposed that they would gain power over them. But contrary to expectations, the Jews gained power over their enemies.

All of this happened on the thirteenth day of the month of Adar. They then rested on the fourteenth day and made it a day for banqueting and happiness.

But the Jews who were in Susa assembled on the thirteenth and fourteenth days, and rested on the fifteenth, making it a day for banqueting and happiness.