Western Hemisphere

The Western Hemisphere is a geographical term[1][2] for the half of Earth which lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian. The other half is called the Eastern Hemisphere.[3] It may be used in a cultural or geopolitical sense as a synonym for the "New World".

The Western Hemisphere

Toponomy

As an example of totum pro parte, the term Western Hemisphere is widely used by some, such as the United States government, to refer to the Americas.[4][5][6][7][8][9][10][11]

Geography

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.

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 nearest land is Genovesa Island at 0°19′00″N 89°57′00″W.

The highest mountain in the Western Hemisphere is Aconcagua in the Andes of Argentina at 6,960.8 metres (22,837 ft).[12]

The tallest human-occupiable building or tower in the Western Hemisphere is the CN Tower, which is located in Toronto, Canada at 43°38′33.22″N 79°23′13.41″W.

Proposed revision of hemispheric borders

In an attempt to define the Western Hemisphere as the parts of the world which are not part of the Old World, there also exist projections which use the 20th meridian west and the diametrically opposed 160th meridian east to define the hemisphere.[1] This projection excludes the European and African mainlands and a small portion of northeast Greenland, but includes more of eastern Russia and Oceania.

Sovereign states in both hemispheres

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:

Below is a list of the sovereign states which are in both the Western and Eastern Hemispheres along the 180th meridian, in order from north to south. With the exception of the United States (due to Wake Island, Guam and the Northern Mariana Islands), all of them are located on just one side of the International Date Line, which is curved around them.

One sovereign state has territory in both hemispheres, but neither the prime meridian nor the 180th meridian passes through its territory:

Countries, dependencies and other territories in the Western Hemisphere but not in the Americas

The following countries and territories lie outside the Americas yet are entirely, mostly or partially within the Western Hemisphere:

Africa
Entirely
Mostly
Partially


Antarctica
Entirely
Partially
Asia
Partially


Europe
Entirely
Mostly
Partially
Oceania
Entirely
Mostly
Partially
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References
  1. Olson, Judy M (1997), "Projecting the hemisphere", in Robinson, Arthur H; Snyder, John P (eds.), Matching the map projection to the need, Bethesda, MD: Cartography and Geographic Information Society, American Congress on Surveying and Mapping.
    - "Western Hemisphere", Merriam-Webster's Geographical Dictionary (3rd ed.), Springfield, Massachusetts: Merriam-Webster, 2001, p. 1294.
  2. Oxford Dictionary of English (2nd ed.), London, UK: Oxford University Press, 2006, p. 2001
    - "Western /western%20hemisphere", Merriam Webster's Online Dictionary (based on Collegiate vol., 11th ed.), Springfield, MA: Merriam-Webster, 2006
  3. "Western Hemisphere". Britannica.com.
  4. Bureau of Western Hemisphere Affairs, United States Department of State.
  5. Western Hemisphere, United States Department of the Treasury.
  6. Western Hemisphere, Office of the United States Trade Representative.
  7. Joe Biden: The Western Hemisphere Needs U.S. Leadership, Americas Quarterly, 17 December 2018.
  8. Western Hemisphere, United States Department of Justice.
  9. Western Hemisphere, United States Department of Agriculture.
  10. Western Hemisphere, United States Fish and Wildlife Service.
  11. Western Hemisphere, Fulbright Program.
  12. "Informe científico que estudia el Aconcagua, el Coloso de América mide 6960,8 metros" [Scientific Report on Aconcagua, the Colossus of America measures 6960,8m] (in Spanish). Universidad Nacional de Cuyo. 2012. Archived from the original on September 8, 2012. Retrieved September 3, 2012.
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