"technically it's daytime, but outside is dark"
Polar night in the north of Norway
Permission Granted by Copyright Owner for Use on Book DrumPolar night in the north of Norway - Credit: KrWe, Flickr

In the polar circles (both Arctic and Antarctic) a phenomenon called the polar night occurs during the winter months. The sun never rises, although the intensity of darkness depends on the location. The full astronomical polar night occurs only in uninhabited areas, such as permafrosts in Greenland and Antarctica. The only people who experience it are scientists in isolated research stations.

The opposite phenomenon, called the midnight sun, occurs during the summer months.