In case you haven't heard, August 2012 is Blue Moon Month. The first full moon occurred on August 1, 2012 and the next full moon (the actually blue moon) will appear on August 31, 2012. The next year of double blue moons is coming up in January and March of 2018.
Another definition of blue moon is seasonal.If a season has four full moons, then the third full moon may be called a Blue Moon. The next blue moon by this definition will fall on August 21, 2013.
The term "blue moon" actually refers to the rarity of multiple full moons within a single month or year. Hence the term, "once in a blue moon." You can find more information about blue moons below:
- Infoplease: Blue Moon Myths, Facts History, and Dates
- Sky and Telescope: What's a Blue Moon?
- Washington Post: Blue moon and Sturgeon moon in August 2012