The “blood” moon is a reference to the moon’s colour, while the “wolf” refers to and full moon in January.
The tradition dates back to early Colonial times, when wolves would howl at the moons outside villages, according to Old Farmer’s Almanac.
Full Wolf Moon – January 21
Full Snow Moon – February 19
Full Worm Moon – March 20
Full Pink Moon – April 19
Full Flower Moon – May 18
Full Strawberry Moon – June 17
Full Buck Moon – July 16
Full Sturgeon Moon – August 15
Full Harvest Moon – September 14
Full Hunter’s Moon – October 13
Full Beaver Moon – November 12
Full Cold Moon – December 12