2 Maccabees 15:37

37 But to celebrate the thirteenth day of the month of Adar, called, in the Syrian language, the day before Mardochias' day.

2 Maccabees 15:37 In-Context

35 And he hung up Nicanor's head in the top of the castle, that it might be an evident and manifest sign of the help of God.
36 And they all ordained by a common decree, by no means to let this day pass without solemnity:
37 But to celebrate the thirteenth day of the month of Adar, called, in the Syrian language, the day before Mardochias' day.
38 So these things being done with relation to Nicanor, and from that time the city being possessed by the Hebrews, I also will here make an end of my narration.
39 Which if I have done well, and as it becometh the history, it is what I desired: but if not so perfectly, it must be pardoned me.
The Douay-Rheims Bible is in the public domain.