August was the first of 3 full Supermoons in 2015. A Supermoon happens when the moon is the closet to earth during its orbit. The unique event happens when the moon is the closest to the earth and is a full moon at the same time. September and October of 2015 will also have full supermoons but only the one during September will also have a lunar eclipse. http://earthsky.org/astronomy-essentials/dates-of-next-lunar-and-solar-eclipses