A Blue Moon is when there are 2 full moons in one month, the 2nd is called a Blue Moon. “Once in a Blue Moon” is an idiom that means ‘it does not happen very often’. This is the 2nd Blue Moon in 2018, 2 in 60 days! The normal occurrence is 1 in 2.7 years. But then again, we are living in very exciting times. AND THIS ONE FALLS ON PASSOVER!!!!
Mbostrom2's Blog 