According to NASA’s lunar expert Gordon Johnston, the Beaver Moon nickname was popularized in the 1930s by the Maine Farmer’s Almanac.
That was when the guidebook to astronomy, nature and folklore first published the Moon’s Indian names.
In total, there are between 12 and 13 Full Moons each year, with the 13th sometimes being an additional Blue Moon.
Each of these Moons bears a unique name that reflects the changing season in one way or another.
April’s Full Moon, for instance, arrives when a type of pink flower springs in America, hence its name, the Pink Moon.