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The meridians of 0° and 180° longitude separate the eastern and western hemispheres.
Zero degrees
Prime Meridian
The prime meridian divides earth into the East and West hemispheres.
The prime meridian at longitude 0° marks the eastern boundary of the Western Hemisphere The corresponding anti-meridian at Longitude 180° marks the western boundary of the Western Hemisphere. (In practical terms you could also consider the international date line to be the boundary - just not the official boundary.)
The Prime Meridian divides the globe into Eastern and Western hemispheres, just as the equator divides the globe into Northern and Southern hemispheres.
The Prime Meridian, located at 0 degrees longitude, divides the eastern and western hemispheres of the Earth. When standing at the Prime Meridian, countries to the east are in the Eastern Hemisphere and countries to the west are in the Western Hemisphere.
The Prime Meridian at 0 degrees longitude divides the Western Hemisphere and the Eastern Hemisphere.
The equator (0° latitude) divides the Earth into the Northern Hemisphere and the Southern Hemisphere. The Prime Meridian (0° longitude) divides the Earth into the Eastern Hemisphere and the Western Hemisphere.
Prime Meridian
The prime meridian.
Alaska is in both the Western hemisphere and Easter hemisphere. Alaska's Aleutian Islands stretch across the 180º line of Longitude, which divides the Earth into Eastern and Western hemispheres. BarDev
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.
The Prime Meridian, which passes through Greenwich, England, divides the Earth into the Western Hemisphere and the Eastern Hemisphere.
The Equator divides the Eastern and Western Hemispheres.
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.