What is the latitude of the Arctic Circle?

The latitude of the Arctic Circle is defined as 66.5 degrees North. At this latitude, the sun does not set for 24 hours during the summer solstice and does not rise for 24 hours during the winter solstice, demonstrating the phenomenon of polar day and polar night. This geographic marker helps to delineate the area within the Arctic region where these unique daylight conditions occur.

The other answers refer to latitudes that do not pertain to the Arctic Circle. For example, 90 degrees North denotes the North Pole, while 90 degrees South refers to the South Pole. Similarly, 66.5 degrees South is the latitude of the Antarctic Circle, which is an entirely different region in the Southern Hemisphere. Understanding these latitudinal definitions helps clarify why 66.5 degrees North is correctly identified as the location of the Arctic Circle.