It's sometimes referred to as the Cold Moon, Frost Exploding Moon, Freeze Up Moon and Severe Moon. The Dakota tribe calls it the Hard Moon to describe the hard crust that develops over fallen snow.

It was also called the Center Moon (Assiniboine), Cold Moon (Cree), Frost Exploding Moon (Cree), Freeze Up Moon (Algonquin), Severe Moon (Dakota). and Hard Moon (Dakota), all reflecting the harshness ...

Other nicknames for January’s full moon include the cold moon, frost exploding moon, freeze up moon, severe moon, hard moon, Canada goose moon, great moon, greetings moon and spirit moon.

Cold Moon (Cree), Frost Exploding Moon (Cree), Freeze Up Moon (Algonquin), and Severe Moon (Dakota). Hard Moon (Dakota) highlights the phenomenon of the fallen snow developing a hard crust," the ...