The Antarctic Circle is one of the five major circles or parallels of latitude that mark maps of ... This is because the earth is tilted at a 23.5 degree angle, and during the winter solstice ...

Arctic Circle: The line of latitude about 66(degrees) 33′ north of the Equator. To the north of this line the sun does not set on at least one day in summer, nor does it rise during at least one ...