When is the “supermoon” in 2013?

The “supermoon” or the closest and largest full moon of the year falls on June 23, 2013. This full moon is the moon’s closest encounter with Earth for all of 2013. The moon will not be this close to Earth again until August 2014.  

Source: http://earthsky.org/tonight/is-biggest-and-closest-full-moon-on-june-23-2013-a-supermoon