
Friday's supermoon would be visible around 3.30 p.m. The remaining three supermoons will be visible July 12, August 10 and September 9. The one in August would be closest to Earth. "A supermoon is when the moon makes its closest approach to Earth in its orbit than usual. It appears as much as 14 percent bigger and 30 percent brighter," said Space Foundation president CB Devgun.