2 Maccabees 15:36

36 And they ordained all with a common decree in no case to let that day pass without solemnity, but to celebrate the thirtieth day of the twelfth month, which in the Syrian tongue is called Adar, the day before Mardocheus' day.

2 Maccabees 15:36 In-Context

34 So every man praised toward the heaven the glorious Lord, saying, Blessed be he that hath kept his own place undefiled.
35 He hanged also Nicanor's head upon the tower, an evident and manifest sign unto all of the help of the Lord.
36 And they ordained all with a common decree in no case to let that day pass without solemnity, but to celebrate the thirtieth day of the twelfth month, which in the Syrian tongue is called Adar, the day before Mardocheus' day.
37 Thus went it with Nicanor: and from that time forth the Hebrews had the city in their power. And here will I make an end.
38 And if I have done well, and as is fitting the story, it is that which I desired: but if slenderly and meanly, it is that which I could attain unto.
The King James Version is in the public domain.