Perigee.

The moon reaches perigee – its closest point to Earth for the month – on August 19, 2013, at 1:00 Universal Time. For U.S. time zones, that places this month’s perigee on August 18, at 9:00 p.m. EDT, 8:00 p.m. CDT, 7:00 p.m. MDT or 6:00 p.m. PDT. At this particular perigee, the moon lies 362,264 kilometers (225,100 miles) away.

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