Monthly Blue Moons are relatively rare, occurring about once every 2.7 years. Seasonal Blue Moons, on the other hand, occur about once every 3.5 years.
A "proper" scientific post about a Blue Moon should clarify that the moon doesn't actually turn blue. It usually refers to the . Key Fact : They happen roughly every 2.5 years. blue moon
A full moon occurs every 29.53 days. Over a year (365.25 days), there are roughly 12.37 full moons. Monthly Blue Moons are relatively rare, occurring about