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.
Farmers' almanacs published in Maine began calling the third full moon in a season with four a blue moon. Theories abound as to why the publishers did this. Some say that third moon was traditionally called blue in the Czech language, while others think the term comes from the French phrase double moon, la deux lune, which sounds like blue moon. Other theories hold that almanacs started out printing the various types of moons in different colors, while still others assert that those third moons were bad luck, thus rendered blue.