'New Moon' in the Bible

And the ruler will be responsible for the burned offering and the meal offering and the drink offering, at the feasts and the new moons and the Sabbaths, at all the fixed feasts of the children of Israel: he will give the sin-offering and meal offering and burned offering and the peace-offerings, to take away the sin of the children of Israel.

This is what the Lord has said: The doorway of the inner square looking to the east is to be shut on the six working days; but on the Sabbath it is to be open, and at the time of the new moon it is to be open.

And the people of the land are to give worship at the door of that doorway before the Lord on the Sabbaths and at the new moons.

And at the time of the new moon it is to be a young ox of the herd without a mark on him, and six lambs and a male sheep, all without a mark: