On November 14 (Mon) the Full Moon will be closer to Earth than it’s been since January 26, 1948. And the Moon won’t come this close again until November 25, 2034. That makes the upcoming Full Moon the closest and largest Supermoon in a period of 86 years. A Supermoon is the coincidence of a Full Moon or a New Moon with the closest approach the Moon makes to the Earth on its elliptical orbit, resulting in the largest apparent size of the lunar disk as seen from Earth. The technical term is the Perigee-Syzygy of the Earth-Moon-Sun system.