Full moon falls on June 23, 2013 at 11:32
UTC (6:32 a.m. CDT in the U.S.). Thus, for many, the moon appears about as
full in the June 22 evening sky as it does on the evening of June 23.
This full moon is not only the closest and largest full moon of the
year. It also presents the moon’s closest encounter with Earth for all
of 2013. The moon will not be so close again until August, 2014. In
other words, it’s not just a supermoon. It’s the closest supermoon of
2013.