The meridian 104° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

Line across the Earth
104°
104th meridian west

The 104th meridian west forms a great circle with the 76th meridian east.

In the United States, the western boundaries of North Dakota, South Dakota, and Nebraska and the eastern boundaries of Montana and Wyoming lie on the meridian 27° west of Washington, which is a couple of miles west of the meridian 104° west of Greenwich. In Colorado, the meridian 104° west of Greenwich roughly defines the eastern extent of the region of high plains protected by the Southern Rocky Mountains.

From Pole to Pole

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Starting at the North Pole and heading south to the South Pole, the 104th meridian west passes through:

Co-ordinates Country, territory or sea Notes
90°0′N 104°0′W / 90.000°N 104.000°W / 90.000; -104.000 (Arctic Ocean) Arctic Ocean
79°22′N 104°0′W / 79.367°N 104.000°W / 79.367; -104.000 (Canada)   Canada NunavutEllef Ringnes Island
78°14′N 104°0′W / 78.233°N 104.000°W / 78.233; -104.000 (Maclean Strait) Maclean Strait
77°9′N 104°0′W / 77.150°N 104.000°W / 77.150; -104.000 (Canada)   Canada NunavutEdmund Walker Island
77°7′N 104°0′W / 77.117°N 104.000°W / 77.117; -104.000 (Desbarats Strait) Desbarats Strait
76°40′N 104°0′W / 76.667°N 104.000°W / 76.667; -104.000 (Canada)   Canada NunavutCameron Island and Île Vanier
76°2′N 104°0′W / 76.033°N 104.000°W / 76.033; -104.000 (Byam Martin Channel) Byam Martin Channel Passing just west of Massey Island, Nunavut,   Canada (at 75°56′N 103°55′W / 75.933°N 103.917°W / 75.933; -103.917 (Massey Island))
Passing just west of Île Marc, Nunavut,   Canada (at 75°52′N 103°48′W / 75.867°N 103.800°W / 75.867; -103.800 (Île Marc))
75°40′N 104°0′W / 75.667°N 104.000°W / 75.667; -104.000 (Austin Channel) Austin Channel
75°24′N 104°0′W / 75.400°N 104.000°W / 75.400; -104.000 (Canada)   Canada NunavutByam Martin Island
75°3′N 104°0′W / 75.050°N 104.000°W / 75.050; -104.000 (Parry Channel) Parry Channel Viscount Melville Sound
73°25′N 104°0′W / 73.417°N 104.000°W / 73.417; -104.000 (M'Clintock Channel) M'Clintock Channel
70°46′N 104°0′W / 70.767°N 104.000°W / 70.767; -104.000 (Canada)   Canada NunavutVictoria Island
68°52′N 104°0′W / 68.867°N 104.000°W / 68.867; -104.000 (Queen Maud Gulf) Queen Maud Gulf
68°3′N 104°0′W / 68.050°N 104.000°W / 68.050; -104.000 (Canada)   Canada Nunavut
Northwest Territories — from 64°24′N 104°0′W / 64.400°N 104.000°W / 64.400; -104.000 (Northwest Territories)
Saskatchewan — from 60°0′N 104°0′W / 60.000°N 104.000°W / 60.000; -104.000 (Saskatchewan)
49°0′N 104°0′W / 49.000°N 104.000°W / 49.000; -104.000 (United States)   United States North Dakota
South Dakota — from 45°56′N 104°0′W / 45.933°N 104.000°W / 45.933; -104.000 (South Dakota)
Nebraska — from 43°0′N 104°0′W / 43.000°N 104.000°W / 43.000; -104.000 (Nebraska)
Colorado — from 41°0′N 104°0′W / 41.000°N 104.000°W / 41.000; -104.000 (Colorado)
New Mexico — from 37°0′N 104°0′W / 37.000°N 104.000°W / 37.000; -104.000 (New Mexico)
Texas — from 32°0′N 104°0′W / 32.000°N 104.000°W / 32.000; -104.000 (Texas)
29°18′N 104°0′W / 29.300°N 104.000°W / 29.300; -104.000 (Mexico)   Mexico Chihuahua
Durango — from 26°46′N 104°0′W / 26.767°N 104.000°W / 26.767; -104.000 (Durango)
Zacatecas — from 23°31′N 104°0′W / 23.517°N 104.000°W / 23.517; -104.000 (Zacatecas)
Jalisco — from 22°21′N 104°0′W / 22.350°N 104.000°W / 22.350; -104.000 (Jalisco)
Nayarit — from 21°27′N 104°0′W / 21.450°N 104.000°W / 21.450; -104.000 (Nayarit)
Jalisco — from 21°15′N 104°0′W / 21.250°N 104.000°W / 21.250; -104.000 (Jalisco)
Colima — from 19°26′N 104°0′W / 19.433°N 104.000°W / 19.433; -104.000 (Colima)
18°53′N 104°0′W / 18.883°N 104.000°W / 18.883; -104.000 (Pacific Ocean) Pacific Ocean
60°0′S 104°0′W / 60.000°S 104.000°W / -60.000; -104.000 (Southern Ocean) Southern Ocean
74°44′S 104°0′W / 74.733°S 104.000°W / -74.733; -104.000 (Antarctica) Antarctica Unclaimed territory

See also

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