Full Moon - March 31, 2018 - Second of this month -- Blue Sap Moon

Some folks are calling this second full Moon the “Blue Sap Moon.”  Yes, we (Old Farmer's Almanac) know, people love to give Moons names! We explain …

When two full Moons occur in a single calendar month, the second full Moon is called a Blue Moon.

This isn’t the first Blue Moon we’ve seen in 2018. Remember the Super Blue Blood Moon on January 31st? 

Now it IS unusual to have Blue Moons happen twice in one year. We won’t see it happen again until 2037.

https://www.almanac.com/content/full-moon-march