1.23.16 Wolf Moon Brooklyn
In Native American and early Colonial times, the Full Moon for January was called the full wolf moon. It appeared when wolves howled in hunger outside the villages.
Traditionally, the January Moon is also known as the Old Moon. To some Native American tribes, this was the Snow Moon, but most applied that name to the next full Moon, in February.
(old farmer's almanac)
A full moon is the lunar phase that occurs when the Moon is completely illuminated as seen from the Earth. This occurs when the moon is in opposition to the Sun (when it is on the opposite side of the Earth from the Sun; more precisely, when the ecliptic longitudes of the Sun and Moon differ by 180 degrees). This means that the hemisphere of the Moon that is facing the Earth (the near side) is almost fully illuminated by the Sun and appears round (while the far side is almost completely unilluminated).