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Antimeridian

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Antimeridian

"Anti-Meridian" redirects here. For the Brave Saint Saturn album, see Anti-Meridian (album).

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180°
180th meridian

The 180th meridian or antimeridian is the meridian which is 180° east or west of the Prime Meridian with which it forms a great circle. 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 Russia and Fiji as well as Antarctica.

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

Co-ordinates
(approximate)
Country, territory or sea Notes
90°0′N 180°0′E / 90.000°N 180.000°E / 90.000; 180.000 (Arctic Ocean)

Arctic Ocean
32|N|180|0|E|type:country name=Russia

}}

 Russia Wrangel Island
70°58′N 180°0′E / 70.967°N 180.000°E / 70.967; 180.000 (Chukchi Sea)

Chukchi Sea
59|N|180|0|E|type:country name=Russia

}}

 Russia Chukotka Autonomous Okrug
65°02′N 180°0′E / 65.033°N 180.000°E / 65.033; 180.000 (Bering Sea)

Bering Sea
52°0′N 180°0′E / 52.000°N 180.000°E / 52.000; 180.000 (Amchitka Pass)

Amchitka Pass Passing just east of Semisopochnoi Island, Alaska,  United States (at 51°57′N 179°47′E / 51.950°N 179.783°E / 51.950; 179.783 (Semisopochnoi Island))

51°0′N 180°0′E / 51.000°N 180.000°E / 51.000; 180.000 (Pacific Ocean)

Pacific Ocean Passing just east of Nukulaelae atoll,  Tuvalu (at 9°25′S 179°52′E / 9.417°S 179.867°E / -9.417; 179.867 (Nukulaelae atoll))
Passing just west of the island of Cikobia,  Fiji (at 15°43′S 179°59′W / 15.717°S 179.983°W / -15.717; -179.983 (Cikobia))

9|S|180|0|E|type:country name=Fiji

}}

 Fiji Islands of Vanua Levu, Rabi, and Taveuni
16°59′S 180°0′E / 16.983°S 180.000°E / -16.983; 180.000 (Pacific Ocean)

Pacific Ocean Passing just east of the island of Moala,  Fiji (at 18°33′S 179°57′E / 18.550°S 179.950°E / -18.550; 179.950 (Moala))
Passing just west of the island of Totoya,  Fiji (at 19°0′S 179°52′W / 19.000°S 179.867°W / -19.000; -179.867 (Totoya))
Passing just east of the island of Matuku,  Fiji (at 19°10′S 179°47′E / 19.167°S 179.783°E / -19.167; 179.783 (Matuku))

60°0′S 180°0′E / 60.000°S 180.000°E / -60.000; 180.000 (Southern Ocean)

Southern Ocean
13|S|180|0|E|type:country name=Antarctica

}}

Antarctica Ross Dependency, claimed by  New Zealand


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

See also


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