Astrologer Richard Nolle defined the term back in 1979 as a "new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit".
Attention US-based skywatchers! February 19 will be the flawless day to gaze upon the Earth's lunar satellite, thanks to a not-so-little thing called the Snow Supermoon. It will also look huge - due to how close it is to earth.
Although forecasts suggest that flakes may not start falling until early Wednesday, snow clouds could start streaming across our skies before that.
Its closest point is the perigee, which is an average distance of about 226,000 miles (363,300 kilometers) from Earth.
This will be the second time the moon has reached perigee this year. It coincides with the moon being at its perigee, a point in the moon's orbit when its closest to earth, creating a Supermoon.
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According to the Farmer's Almanac, native tribes gave it this name because it was the month that had the heaviest snowfall. Some other nicknames for it are the Storm Moon, Hunger Moon and Bone Moon.
To check your local moonrise time click on the moonrise tracker, here.
Or, ya know, just take a peek out the window before you go to bed on Monday night.
Whatever names the February moon may be known by, one thing you can be sure of is that you won't need any special equipment to see it. During this time it'll appear very large to the eyes, which is an optical illusion.
An aircraft taking off is seen passing in front of full moon in December of 2017.
If you miss this month's supermoon, don't fret, as there is going to be another one on March 21, 2019.