The new moon of January will be at 6:57 a.m. Eastern Time on January 11, according to the U.S. Naval Observatory, and a day later the planet Mercury will reach its greatest westward separation from the sun, showing itself as a "morning star."
New moons happen when the sun and moon share the same celestial longitude, a position also called conjunction. At new phase, you can't see the moon from Earth because the illuminated side is facing away from us.
