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Arctic Circle

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A world map. The Arctic Circle is shown as the red line.

The Arctic Circle is one of the five major circles of latitude (imaginary lines around the Earth) that are often marked on maps of the Earth. This is the parallel of latitude that (in 2000) runs 66° 33' 39" north of the Equator.

The Arctic Circle is one way to say what part of the Earth is in the Arctic. The North Pole is in the center of the Arctic Circle.

Countries which are partly within the Arctic Circle are:

The position of the Arctic Circle is not fixed. It directly depends on the Earth's axial tilt. The axial tilt fluctuates within a margin of 2° over a 40,000-year period, mostly due to tidal forces from the orbit of the Moon. The Arctic Circle is currently drifting northwards at a speed of about 15 m (49 ft) per year; see Circle of latitude for more information.

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