94.5 percent full
12.5 days old
There is a Blue Moon on August 20-21, 2013. It is not the second full moon in the month, however,...
...It’ll be a Blue Moon (click here) by the seasonal definition, that is, the third of four full moons to take place in a season, in this case between the June 2013 solstice and September equinox. The last Blue Moon by this definition happened on November 21, 2010....
