20th meridian west
The meridian 20° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, Iceland, the Atlantic Ocean, the Southern Ocean, and Antarctica to the South Pole. The 20th meridian west forms a great circle with the 160th meridian east.
In Antarctica, the meridian defines the border between the British Antarctic Territory and Queen Maud Land. Between the 5th parallel north and the 60th parallel south it forms the eastern boundary of the Latin American Nuclear-Weapon-Free Zone.
From Pole to Pole
Co-ordinates Country, territory or sea Notes 90°0′N 20°0′W Arctic Ocean 81°33′N 20°0′W Greenland 78°49′N 20°0′W Jokel Bay 77°59′N 20°0′W Greenland Gamma Island and Germania Land 76°55′N 20°0′W Dove Bay 76°15′N 20°0′W Greenland Mainland, Kuhn Island, and the mainland again 74°16′N 20°0′W Atlantic Ocean Greenland Sea 66°2′N 20°0′W Iceland 63°32′N 20°0′W Atlantic Ocean 60°0′S 20°0′W Southern Ocean 73°25′S 20°0′W Antarctica Border between the Antarctic territorial claims of the United Kingdom and Norway