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The meridian 42° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, the Atlantic Ocean, South America, the Southern Ocean, and Antarctica to the South Pole.
The 42nd meridian west forms a great circle with the 138th meridian east.
From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 42nd meridian west passes through:
References
42nd meridian west Wikipedia(Text) CC BY-SA