The Arctic Circle is a circle of latitude that may be found 66 degrees, 33 minutes, and 45.9 seconds north of the Equator. The Arctic Circle is the northernmost of the five primary latitude circles that mark maps of the Earth. The Arctic Circle serves as the boundary for the kingdom of the midnight sun and the polar winters, which are located to the north of Nordland. The area that is to the north of this circle is referred to as the Arctic, while the region that lies immediately to the south of it is known as the Northern Temperate Zone. North of the Arctic Circle, the sun rises above the horizon for twenty-four hours straight in summer, making it visible at midnight. At least one day out of every year, the sun will be hidden by the horizon for the full twenty-four hours that make up the middle of the day. This is also the case within the Antarctic Circle, which is the circumference of the comparable polar circle in the Southern Hemisphere.
