“Once in a Blue Moon”, just means it is uncommon. This Friday when you look up in the sky you will see a full moon. But will it appear blue?
it's about Long Island with the focus on family
There are two definitions of a blue moon. 1st definition is like previously stated it is the second full moon in a single month. The 2nd definition is that it is the third full moon in a season with four full moons. It is possible for one blue moon to fall under both categories. But, that makes it even more rare.
Did you know that the last full moon was on August 31st, 2012?
“Because 31 is the reverse of 13, and Friday the 13th is also a rare event, blue moons that occur on Friday the 31st (like this week) bring about extra superstition. Interestingly, the blue moon in 2012 also occurred on a Friday.”- WBAB
The next “Blue Moon” will occur January 2018