The Full Sturgeon Moon will occur on Aug. 9, at 3:55 a.m. EDT (0755 UTC), according to the U.S. Naval Observatory. The moon will make a close pass to Saturn and Neptune just three days later on Aug. 12.
A moon is full when it is exactly on the opposite side of Earth from the sun. Lunar phases are measured according to the longitudinal position of the moon in its orbit, and as such happen at the same time from the point of view of Earthbound observers. If one is in Los Angeles, for example, the full moon is at 12:55 a.m. on Aug. 9, whereas in London it is at 8:55 a.m. (British Summer Time). In New Delhi, the full moon is at 2:25 p.m. local time.
