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  1. 1 day ago · Greenwich Mean Time or GMT is the mean (average) solar time at the Greenwich Meridian or Prime Meridian , 0 degrees longitude. The time displayed by the Shepherd Gate Clock at the Royal Observatory in Greenwich, London, is always GMT.

  2. 4 days ago · Mediterranean Sea, an intercontinental sea that stretches from the Atlantic Ocean on the west to Asia on the east and separates Europe from Africa. It has often been called the incubator of Western civilization.

  3. 5 days ago · The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) is the reference point for every Time Zone in the world. Every 15° longitude represents one hour's difference in time: (24 x 15 = 360, the degrees of a circle).

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  4. 4 days ago · First discovered in 1962, it runs northward along the 90° E meridian (hence its name) for 2,800 miles (4,500 km) from the zonal Broken Ridge at latitudes 31° S to 9° N and can be traced farther under the sediments of the Bay of Bengal.

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  5. 5 days ago · This article lists extreme locations on Earth that hold geographical records or are otherwise known for their geophysical or meteorological superlatives. All of these locations are Earth-wide extremes; extremes of individual continents or countries are not listed.

  6. 2 days ago · The magnetic meridian is a line joining the magnetic north pole with the magnetic south pole inside the earth. This is the horizontal component of the magnetic force lines along the surface of the earth. The magnetic meridian is parallel with the earth’s magnetic lines of force.

  7. 3 days ago · This article treats the physical and human geography of Africa, followed by discussion of geographic features of special interest. For discussion of individual countries of the continent, see such articles as Egypt, Madagascar, and Sudan.