'New Moon' in the Bible

Behold, I build a house to the name of the LORD my God, to dedicate it to him, and to burn before him sweet incense, and for the continual showbread, and for the burnt offerings morning and evening, on the sabbaths, and on the new moons, and on the solemn feasts of the LORD our God. This is an ordinance forever to Israel.

Even according to a certain duty every day, offering according to the commandment of Moses, on the sabbaths, and on the new moons, and on the solemn feasts, three times in the year, even in the feast of unleavened bread, and in the feast of weeks, and in the feast of tabernacles.

He appointed also the king's portion of his possessions for the burnt offerings, the morning and evening burnt offerings, and the burnt offerings for the sabbaths, and for the new moons, and for the set feasts, as it is written in the law of the LORD.