4th meridian west

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The meridian 4° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Europe, Africa, the Southern Ocean, and Antarctica to the South Pole.

The 4th meridian west forms a great circle with the 176th meridian east.

Starting at the North Pole and heading south to the South Pole, the 4th meridian west passes through:

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Wikipedia