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The Antarctic Circle is the northernmost latitude in the Southern Hemisphere at which the centre of the sun can remain continuously above the horizon for twenty-four hours; as a result, at least once each year at any location within the Antarctic Circle the centre of the sun is visible at local midnight, and at least once the centre of the sun is below the horizon at local noon.
The 71st parallel south is a circle of latitude that is 71 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica . Around the world
1872–1876 – HMS Challenger under Capt. George S. Nares, becomes the first steamship to cross the Antarctic Circle; reopens the study of oceanography in the region after a 30-year gap. [ 10 ] 1892–1893 – Carl Anton Larsen led the first Norwegian expedition to Antarctica aboard the ship Jason .
The 75th parallel south is a circle of latitude that is 75 degrees south of the Earth's equatorial plane in the Antarctic. It passes through the Southern Ocean and Antarctica . Around the world
The 70th parallel south is a circle of latitude that is 70 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica . Around the world
The first 300 Club outside of Antarctica was established on January 30, 2019 near Minneapolis, Minnesota during a polar vortex. [6] With an outside temperature of −27 °F (−33 °C), three men heated their backyard sauna to 280 °F (138 °C) and sat inside for 10 minutes.
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On Earth, the Arctic Circle is currently drifting northwards at a speed of about 14.5 m per year and is now at a mean latitude (i.e. without taking into account the astronomical nutation) of 66°33′50.2″ N; the Antarctic Circle is currently drifting southwards at a speed of about 14.5 m per year and is now at a mean latitude of 66°33′50. ...