When is the Next Blue Moon?
<answer> May 21, 2016 <context> The next Blue Moon will be on May 21, 2016. It’s a seasonal Blue Moon, the third of four full moons between the March equinox and the June solstice of 2016. Seven times in 19 years there were — and still are — 13 full moons in a year. This gives 11 months with one full moon each and one with two.