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 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.