http://www.newsweek.com/full-wolf-moon-name-january-2021-1564224

The first full moon of 2021 will soon grace the skies—and it is known as a "wolf moon." But where does this name come from?

For thousands of years, Europeans and native North Americans named the lunar months after certain characteristics of the seasons in the northern hemisphere. Coincidentally, many of these names are very similar or identical.