'New moon' in the Bible

Ye shall not add to bring gifts of iniquity; incense, this an abomination to me; the new moon and the Sabbath, the calling of the assembly; I shall not be able to bear vanity and restraining.

And it was as often as the new moon in its new moon, and as often as the Sabbath in its Sabbath, all flesh shall come to worship before me, says Jehovah.