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180th meridian: Wikis


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Points on meridian 180° longitude
The International Date Line zigzags around the 180th Meridian.

The 180th meridian or antimeridian is the meridian which is 180° east or west of the Prime Meridian passing through the Royal Observatory, Greenwich. It is common to both east longitude and west longitude. It is used as the basis for the International Date Line because it for the most part passes through the open waters of the Pacific Ocean. However, the meridian passes through a few countries as well as Antarctica.

Starting at the North Pole and heading south to the South Pole, the 180th meridian passes through:

Country, territory or sea Notes
90°0′N 180°0′E / 90°N 180°E / 90; 180 (Arctic Ocean) Arctic Ocean
71°32′N 180°0′E / 71.533°N 180°E / 71.533; 180 (Russia)  Russia Wrangel Island
70°58′N 180°0′E / 70.967°N 180°E / 70.967; 180 (Chukchi Sea) Chukchi Sea
68°59′N 180°0′E / 68.983°N 180°E / 68.983; 180 (Russia)  Russia Chukotka Autonomous Okrug
65°02′N 180°0′E / 65.033°N 180°E / 65.033; 180 (Bering Sea) Bering Sea
52°0′N 180°0′E / 52°N 180°E / 52; 180 (Amchitka Pass) Amchitka Pass Passing just east of Semisopochnoi Island, Alaska,  United States
51°0′N 180°0′E / 51°N 180°E / 51; 180 (Pacific Ocean) Pacific Ocean Passing just east of Nukulaelae atoll,  Tuvalu at 9°23′S 180°0′E / 9.383°S 180°E / -9.383; 180 (East of Nukulaelae atoll)
16°9′S 180°0′E / 16.15°S 180°E / -16.15; 180 (Fiji)  Fiji Islands of Vanua Levu, Rabi, and Taveuni
16°59′S 180°0′E / 16.983°S 180°E / -16.983; 180 (Pacific Ocean) Pacific Ocean Passing just east of the island of Moala,  Fiji
Passing just west of the island of Totoya,  Fiji
Passing just east of the island of Matuku,  Fiji
60°0′S 180°0′E / 60°S 180°E / -60; 180 (Southern Ocean) Southern Ocean
78°13′S 180°0′E / 78.217°S 180°E / -78.217; 180 (Antarctica) Antarctica Ross Dependency, claimed by  New Zealand
180° Meridian, Taveuni, Fiji

The meridian also passes between (but not particularly close to):

See also



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