2016 is a year that features a true Blue Moon based on the original definition of four Full Moons in a season, from an Equinox to a Solstice, or a Solstice to an Equinox. This will occur on March 23, April 21, May 21 and June 20, 2016. This also means we will have 13 Full Moons from December Solstice 2015 to December Solstice 2016.
There were 13 Full Moons from December Solstice to the December Solstice in 2010 and 2013. There is a belief that we have 13 Full Moons every year, but the reality is this only happens every three years.