Florida Georgia Line is set to play the 2nd annual Buckeye Country Superfest in Columbus, OH June. 18th and 19th 2016! Joining them on the bill are country stars Jason.
If a Blue Moon is defined as the second Full Moon in a calendar month, we can easily calculate the mean period for such events because: 1  The synodic period between Full Moons is 29.53 days. 2  There are 12 calendar months in a year of 365.25 days. 3  A mean calendar month is [math]\frac{365.25}{12}\approx30.44[/math] days.
There's a reason why once in a blue moon is a saying and tonight will prove it. A blue moon is defined as any time there is a second full moon during a calendar month, according to NASA. While most years have 12 full moons, this year has 13. Don't let the name fool you, though. Blue moons are very rarely blue.