The new moon arrives on July 24, a day after the moon and Jupiter make a close pass in the dawn sky.
The exact timing of the new moon phase happens at 3:11 p.m. Eastern Time (1911 UTC), according to the U.S. Naval Observatory. The new phase of the moon is called that because in many lunar calendar systems, it marks the start of the month. At that time, the sun and moon are in conjunction, meaning they share the same celestial longitude. Unless there is a solar eclipse, the moon itself isn't visible since it is so close to the sun and the illuminated side is facing away from Earth. (The next partial solar eclipse is due in September, and will be visible in the Southern Hemisphere).
