So, once in a blue moon happens about 41 times a century….and, it is happening tonight.
So it could be a Blue Moon in May or a Blue Moon in June (much more fun to say)
Based on the Blue Moon calendar – my blue moon is in May. My brother in Japan’s Blue Moon is in June.
The Blue Moon of 2007
Photo attribution: ‘By the light of the silvery moon‘
www.flickr.com/photos/23019891@N00/314603021