The supermoon on the night of Aug. 10, and the largest full moon of the year. A supermoon occurs when a full moon coincides with the moon’s closest approach to Earth. The next supermoon is on Sept. 8. David Da He—The Tech May. 9, 2016 Facebook Twitter Reddit Print The supermoon on the night of Aug. 10, and the largest full moon of the year. A supermoon occurs when a full moon coincides with the moon’s closest approach to Earth. The next supermoon is on Sept. 8. David Da He—The Tech