180th meridian

The 180th meridian or antimeridian[1] is the meridian 180° both east and west of the prime meridian in a geographical coordinate system. The longitude at this line can be given as either east or west.

The 180th meridian on a map of Earth.
Map all coordinates using: OpenStreetMap 
Download coordinates as: KML
The International Date Line zigzags around the 180th Meridian.

On Earth, these two meridians form a great circle that divides the earth into the Western and Eastern Hemispheres. The antimeridian mostly passes through the open waters of the Pacific Ocean, but also across land in Russia, Fiji, and Antarctica. An important function of this meridian is its use as the basis for the International Date Line, which snakes around national borders to maintain date consistency within the territories of Russia, the United States, Kiribati, Fiji and New Zealand.

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

Country, territory or sea Notes
90°0′N 180°0′E Arctic Ocean North Pole
71°32′N 180°0′E  Russia Chukotka Autonomous OkrugWrangel Island
70°58′N 180°0′E Chukchi Sea
68°59′N 180°0′E  Russia Chukotka Autonomous Okrug
65°02′N 180°0′E Bering Sea
52°0′N 180°0′E Amchitka Pass Passing just east of Semisopochnoi Island, Alaska,  United States (at 51°57′N 179°47′E)
51°0′N 180°0′E Pacific Ocean Passing just east of Nukulaelae atoll,  Tuvalu (at 9°25′S 179°52′E)
Passing just west of the island of Cikobia-i-Lau,  Fiji (at 15°43′S 179°59′W)
16°9′S 180°0′E  Fiji Islands of Vanua Levu, Rabi, and Taveuni
16°59′S 180°0′E Pacific Ocean Passing just east of the island of Moala,  Fiji (at 18°33′S 179°57′E)
Passing just west of the island of Totoya,  Fiji (at 19°0′S 179°52′W)
Passing just east of the island of Matuku,  Fiji (at 19°10′S 179°47′E)
60°0′S 180°0′E Southern Ocean
78°13′S 180°0′E Antarctica Ross Dependency, claimed by  New Zealand
90°0′S 180°0′E Antarctica Amundsen–Scott South Pole Station, South Pole
180° Meridian, Taveuni, Fiji

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

The only places where roads cross this meridian are in Fiji and Russia. Fiji has several such roads and some buildings very close to it - and Russia has a single dirt road.

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This article uses material from the Wikipedia article 180th meridian, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.