Western Hemisphere

WesternhemisphereAmericasAmericanhemisphericNew Worldthe Westwestern worldthe AmericasWest
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.wikipedia
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Prime meridian

GreenwichGreenwich meridianGreenwich Prime Zero meridian
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.
If one uses directions of East and West from a defined prime meridian, then they can be called the Eastern Hemisphere and the Western Hemisphere.

Americas

Americathe AmericasAmerican
As an example of totum pro parte, the term Western Hemisphere is widely used by the United States government to mean the Americas. The Western Hemisphere consists of the Americas, the western portions of Europe and Africa, the extreme eastern tip of Siberia (Russia), numerous territories in Oceania, and a portion of Antarctica, while excluding some of the Aleutian Islands to the southwest of the Alaskan mainland.
Together, they make up most of the land in Earth's western hemisphere and comprise the New World.

180th meridian

180°antimeridianAnti-Meridian
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.
The 180th meridian or antimeridian is the meridian 180° both east and west of the Prime Meridian, with which it forms a great circle dividing the earth into the Western and Eastern Hemispheres.

Oceania

South PacificPacificSouthwest Pacific
The Western Hemisphere consists of the Americas, the western portions of Europe and Africa, the extreme eastern tip of Siberia (Russia), numerous territories in Oceania, and a portion of Antarctica, while excluding some of the Aleutian Islands to the southwest of the Alaskan mainland.
Spanning the eastern and western hemispheres, Oceania has a land area of 8,525,989 km2 and a population of million.

Pacific Ocean

PacificSouth PacificWestern Pacific
The center of the Western Hemisphere is located in the Pacific Ocean at the intersection of the 90th meridian west and the Equator, among the Galápagos Islands.
The centers of both the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean.

Galápagos Islands

Galapagos IslandsGalapagosGalápagos
The center of the Western Hemisphere is located in the Pacific Ocean at the intersection of the 90th meridian west and the Equator, among the Galápagos Islands.
The Galápagos Islands (official name: Archipiélago de Colón, other Spanish name: Las Islas Galápagos, ), part of the Republic of Ecuador, are an archipelago of volcanic islands distributed on either side of the equator in the Pacific Ocean surrounding the centre of the Western Hemisphere, 906 km west of continental Ecuador.

Eastern Hemisphere

EasternEastEast Hemisphere
The other half is called the Eastern Hemisphere.
It is also used to refer to Afro-Eurasia (Africa and Eurasia) and Australia, in contrast with the Western Hemisphere, which includes mainly North and South America.

Aconcagua

Mount AconcaguaCerro AconcaguaAconcagua Summit
The highest mountain in the Western Hemisphere is Aconcagua in the Andes of Argentina at 6960.8 m.
It is the highest mountain outside of Asia, being the highest in both the Southern and Western Hemispheres with a summit elevation of 6960.8 m. It lies northwest of provincial capital, the city of Mendoza, about from San Juan Province, and from Argentina's border with neighbouring Chile.

90th meridian west

90° E90°W90th Meridian
The center of the Western Hemisphere is located in the Pacific Ocean at the intersection of the 90th meridian west and the Equator, among the Galápagos Islands.
The 90th meridian west forms a great circle with the 90th meridian east, located midway between the Prime meridian and the 180th meridian; thus the center of the Western Hemisphere is on this meridian.

Argentina

ArgentineARGArgentinian
The highest mountain in the Western Hemisphere is Aconcagua in the Andes of Argentina at 6960.8 m.
Argentina's highest point is Aconcagua in the Mendoza province (6959 m above sea level), also the highest point in the Southern and Western Hemispheres.

Totum pro parte

the whole for one of its parts
As an example of totum pro parte, the term Western Hemisphere is widely used by the United States government to mean the Americas.

Andes

AndeanAndes MountainsAndean region
The highest mountain in the Western Hemisphere is Aconcagua in the Andes of Argentina at 6960.8 m.
The Andean condor, the largest bird of its kind in the Western Hemisphere, occurs throughout much of the Andes but generally in very low densities.

West Antarctica

Western AntarcticaLesser AntarcticaWest (or Lesser) Antarctica
West Antarctica, or Lesser Antarctica, one of the two major regions of Antarctica, is the part of that continent that lies within the Western Hemisphere, and includes the Antarctic Peninsula.

IERS Reference Meridian

Prime Meridian0° longitudeIERS meridian
Below is a list of the sovereign states which are in both the Western and Eastern Hemispheres on the IERS Reference Meridian, in order from north to south:
The 180th meridian is opposite the IERS Reference Meridian and forms a great circle with it dividing the earth into Western Hemisphere and Eastern Hemisphere.

Transantarctic Mountains

Trans-Antarctic MountainsWestern MountainsTrans Antarctic Mountains
The East Antarctic Ice Sheet bounds the TAM along their entire length on the Eastern Hemisphere side, while the Western Hemisphere side of the range is bounded by the Ross Sea (C.Michael Hogan.

Saint Helena, Ascension and Tristan da Cunha

Saint Helena and DependenciesSt Helena, Ascension and Tristan da CunhaSaint Helena
The three territories lie in the Western Hemisphere and have the same time zone: Greenwich Mean Time.

Geography

geographicalgeographicgeographer
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

Earth

Earth's surfaceterrestrialworld
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

West

W(West)Germany
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

Greenwich

Greenwich, LondonGreenwich, EnglandEast Greenwich
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

London

London, EnglandLondon, United KingdomLondon, UK
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

United Kingdom

BritishUKBritain
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

East

EEastwardeastern
The Western Hemisphere is a geographical term for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian.

Europe

EuropeanEUEuropean continent
The Western Hemisphere consists of the Americas, the western portions of Europe and Africa, the extreme eastern tip of Siberia (Russia), numerous territories in Oceania, and a portion of Antarctica, while excluding some of the Aleutian Islands to the southwest of the Alaskan mainland.

Africa

African continentAfricanAfrican politics
The Western Hemisphere consists of the Americas, the western portions of Europe and Africa, the extreme eastern tip of Siberia (Russia), numerous territories in Oceania, and a portion of Antarctica, while excluding some of the Aleutian Islands to the southwest of the Alaskan mainland.