The meridian 1° 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 1st meridian west forms a great circle with the 179th meridian east.

It is the most populous meridian west of Greenwich, being home to between 41.2 million and 44.9 million people as of 2019.^[1]

Starting at the North Pole and heading south to the South Pole, the 1st meridian west passes through:

More information Co-ordinates, Country, territory or sea ...

Co-ordinates	Country, territory or sea	Notes
90°0′N 1°0′W	Arctic Ocean
81°42′N 1°0′W	Atlantic Ocean
60°42′N 1°0′W	United Kingdom	Scotland — islands of Yell and Hascosay, Shetland
60°36′N 1°0′W	North Sea
60°22′N 1°0′W	United Kingdom	Scotland — island of Whalsay, Shetland
60°20′N 1°0′W	North Sea	Passing just east of the Isle of Noss, Scotland,  United Kingdom (at 60°8′N 1°1′W)
54°36′N 1°0′W	United Kingdom	England — making landfall just west of Saltburn-by-the-Sea, North Yorkshire
50°47′N 1°0′W	English Channel	Passing just east of the Isle of Wight, England,  United Kingdom (at 50°41′N 1°4′W)
49°24′N 1°0′W	France
42°59′N 1°0′W	Spain	Passing just west of Cartagena, Murcia at 37°36′N 0°59′W
37°35′N 1°0′W	Mediterranean Sea
35°41′N 1°0′W	Algeria
32°32′N 1°0′W	Morocco	For about 1 km at the easternmost part of the country
32°31′N 1°0′W	Algeria
22°33′N 1°0′W	Mali
14°51′N 1°0′W	Burkina Faso
10°59′N 1°0′W	Ghana
5°12′N 1°0′W	Atlantic Ocean
60°0′S 1°0′W	Southern Ocean
68°52′S 1°0′W	Antarctica	Queen Maud Land — claimed by  Norway

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• Prime meridian
• 2nd meridian west