'New moon' in the Bible

Ye shall not again bring in an empty, present, Incense, an abomination, is that unto me! New moon, and sabbath calling an assembly - I cannot endure, iniquity and sacred festival!

And it shall come to pass, that From one new moon to another, and From one sabbath to another, Shall all flesh, come in, to bow down before me, Saith Yahweh.