Last Blue Moon Until 2015
The blue moon likely won't be visible until sometime after 6:30 p.m. on Friday, Aug. 31, 2012, according to the Washington Post.
Photo shows the partial lunar eclipse of a 'blue moon' observed in the sky above Kolkata early January 1, 2010. Normally in a calendar year there are 12 full moons but when there is a 13th in the calendar year it is called a Blue Moon. TOPSHOTS AFP PHOTO/Deshakalyan CHOWDHURY
DESHAKALYAN CHOWDHURY/AFP/Getty Images
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Enjoy the blue moon in 2012 Friday night because it won't happen again until 2015, according to a report by the Washington Post.
The blue moon event occurs once every 2.7 years, according to the newspaper, and likely won't be noticeable until sometime after 6:30 p.m.
Coincidentally, astronaut Neil Armstrong's service also is Friday, according to a report by the Associated Press posted on the Boston Globe website.
The next blue moon occurs on July 31, 2015, according to the Post. However, there is expected to be two blue moons in 2018 when they fall within January and March, the Post reported.
