"According to U.S. Clocks, May 5, 2012 features the closest and largest full moon of this year. calendars say May 6, by the way, for this same close full moon as seen from Eurpe, the Middle East, Africa and Asia. We astronomers call this sort of close full moon a perigree full moon. The word perigee describes the moon’s closest point to Earth for a given month. But last year, when the closest and largest full moon occurred on March 19, 2011, many used a term we’d never heard: supermoon. We’ve heard this term again at this 2012 close full moon.” Earth & Sky
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