The meridian 45° 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.
From Pole to Pole
Co-ordinates Country, territory or sea Notes Arctic Ocean Lincoln Sea Greenland Nansen Land J.P. Koch Fjord Greenland Freuchen Land Nordenskiöld Fjord Greenland Island of Nares Land Victoria Fjord Greenland C. H. Ostenfeldt Glacier Atlantic Ocean Brazil Maranhão — Mirinzal Island Atlantic Ocean Brazil Maranhão
Piauí — from
Bahia — from
Minas Gerais — from
São Paulo — from
Atlantic Ocean Southern Ocean South Orkney Islands Powell Island — claimed by both Argentina (Tierra del Fuego Province) and United Kingdom (British Antarctic Territory) Southern Ocean Antarctica Claimed by both Argentina (Argentine Antarctica) and United Kingdom (British Antarctic Territory)