180th meridian - wikipedia 180th meridian `` Anti-Meridian '' redirects here. For the Brave Saint Saturn album, see Anti-Meridian ( album ). For ante meridiem ( AM ), the time before midday, see 12 - hour clock. 180th meridian Map all coordinates using OSM Map all coordinates using Google Export all coordinates as KML Export all coordinates as GPX Map all microformatted coordinates Place data as RDF The International Date Line zigzags around the 180th Meridian. The 180th meridian or antimeridian is the meridian 180 ° east or west of the Prime Meridian, with which it forms a great circle dividing the earth into the Western and Eastern Hemispheres. It is common to both east longitude and west longitude. It is used as the basis for the International Date Line because it mostly 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 71 ° 32 ′ N 180 ° 0 ′ E ﻿ / ﻿ 71.533 ° N 180.000 ° E ﻿ / 71.533 ; 180.000 ﻿ ( Russia ) Russia Chukotka Autonomous Okrug -- Wrangel Island 70 ° 58 ′ N 180 ° 0 ′ E ﻿ / ﻿ 70.967 ° N 180.000 ° E ﻿ / 70.967 ; 180.000 ﻿ ( Chukchi Sea ) Chukchi Sea 68 ° 59 ′ N 180 ° 0 ′ E ﻿ / ﻿ 68.983 ° N 180.000 ° E ﻿ / 68.983 ; 180.000 ﻿ ( 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 ) ) 16 ° 9 ′ S 180 ° 0 ′ E ﻿ / ﻿ 16.150 ° S 180.000 ° E ﻿ / - 16.150 ; 180.000 ﻿ ( 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 78 ° 13 ′ S 180 ° 0 ′ E ﻿ / ﻿ 78.217 ° S 180.000 ° E ﻿ / - 78.217 ; 180.000 ﻿ ( Antarctica ) Antarctica Ross Dependency, claimed by New Zealand 180 ° Meridian, Taveuni, Fiji The meridian also passes between ( but not particularly close to ) : the Gilbert Islands and the Phoenix Islands of Kiribati ; between North Island and the Kermadec Islands of New Zealand ; between the Bounty Islands and the Chatham Islands, also of New Zealand. The only place where roads cross this meridian, and where there are buildings very close to it, is in Fiji. Software representation problems Many geographic software libraries or data formats project the world to a rectangle ; very often this rectangle is split exactly at the 180th meridian. This often makes it non-trivial to do simple tasks ( like representing an area, or a line ) over the 180th meridian. Some examples : The GeoJSON specification strongly suggests splitting geometries so that neither of their parts cross the antimeridian. In OpenStreetMap, areas ( like the boundary of Russia ) are split at the 180th meridian. See also 179th meridian east 179th meridian west Prime meridian Notes Jump up ^ The word antimeridian can also mean the meridian opposite to any given meridian. E.g. 20 ° west is the antimeridian of 160 ° east. Jump up ^ `` RFC 7946 - The GeoJSON Format ''. Circles of latitude / meridians Equator Tropic of Cancer Tropic of Capricorn Arctic Circle Antarctic Circle Equator Tropic of Cancer Tropic of Capricorn Arctic Circle Antarctic Circle Equator Tropic of Cancer Tropic of Capricorn Arctic Circle Antarctic Circle W 0 ° E 30 ° 60 ° 90 ° 120 ° 150 ° 180 ° 30 ° 60 ° 90 ° 120 ° 150 ° 180 ° 5 ° 15 ° 25 ° 35 ° 45 ° 55 ° 65 ° 75 ° 85 ° 95 ° 105 ° 115 ° 125 ° 135 ° 145 ° 155 ° 165 ° 175 ° 5 ° 15 ° 25 ° 35 ° 45 ° 55 ° 65 ° 75 ° 85 ° 95 ° 105 ° 115 ° 125 ° 135 ° 145 ° 155 ° 165 ° 175 ° 10 ° 20 ° 40 ° 50 ° 70 ° 80 ° 100 ° 110 ° 130 ° 140 ° 160 ° 170 ° 10 ° 20 ° 40 ° 50 ° 70 ° 80 ° 100 ° 110 ° 130 ° 140 ° 160 ° 170 ° 0 ° 10 ° 20 ° 30 ° 40 ° 50 ° 60 ° 70 ° 80 ° 90 ° 10 ° 20 ° 30 ° 40 ° 50 ° 60 ° 70 ° 80 ° 90 ° 5 ° N 15 ° 25 ° 35 ° 45 ° 55 ° 65 ° 75 ° 85 ° 5 ° S 15 ° 25 ° 35 ° 45 ° 55 ° 65 ° 75 ° 85 ° 45x90 45x90 45x90 45x90 Time measurement and standards Chronometry Orders of magnitude Metrology International standards Coordinated Universal Time offset UT ΔT DUT1 International Earth Rotation and Reference Systems Service ISO 31 - 1 ISO 8601 International Atomic Time 6 - hour clock 12 - hour clock 24 - hour clock Barycentric Coordinate Time Barycentric Dynamical Time Civil time Daylight saving time Geocentric Coordinate Time International Date Line Leap second Solar time Terrestrial Time Time zone 180th meridian Obsolete standards Ephemeris time Greenwich Mean Time Prime meridian Time in physics Absolute time and space Spacetime Chronon Continuous signal Coordinate time Cosmological decade Discrete time and continuous time Planck time Proper time Theory of relativity Time dilation Gravitational time dilation Time domain Time translation symmetry T - symmetry Horology Clock Astrarium Atomic clock Complication History of timekeeping devices Hourglass Marine chronometer Marine sandglass Radio clock Watch Water clock Sundial Dialing scales Equation of time History of sundials Sundial markup schema Calendar Astronomical Dominical letter Epact Equinox Gregorian Hebrew Hindu Intercalation Islamic Julian Leap year Lunar Lunisolar Solar Solstice Tropical year Weekday determination Weekday names Archaeology and geology Chronological dating Geologic time scale International Commission on Stratigraphy Astronomical chronology Galactic year Nuclear timescale Precession Sidereal time Other units of time Shake Jiffy Second Minute Moment Hour Day Week Fortnight Month Year Olympiad Lustrum Decade Century Saeculum Millennium Related topics Chronology Duration music Mental chronometry Metric time System time Time value of money Timekeeper Retrieved from `` https://en.wikipedia.org/w/index.php?title=180th_meridian&oldid=813921677 '' Categories : Lines of longitude Pacific Ocean Hidden categories : Lists of coordinates Geographic coordinate lists Articles with Geo Talk About Wikipedia Azərbaycanca বাংলা Català Dansk Eesti Español فارسی Français 한국어 Hrvatski Ilokano Bahasa Indonesia Magyar Македонски Bahasa Melayu 日本 語 Português Русский Српски / srpski Srpskohrvatski / српскохрватски ไทย Türkçe Українська اردو 粵語 中文 Edit links This page was last edited on 5 December 2017, at 23 : 18. 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Question: what is the 180 degree line of longitude called
Answer: 180th meridian; 180th meridian or antimeridian; antimeridian; 180th meridian or antimeridian