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It is sometimes called the Greenwich meridian or 0° longitude.
Yes and no! The Prime Meridian is the technical term for the line of longitude (0º) which passes through Greenwich, UK.
The Prime Meridian The International Date Line
prime meridian!Prime Meridian!PRIME MERIDIAN!PrImE MeRiDiAn!
Meridian, or half a great circle.
The Prime Meridian effectively divides the continent of Antarctica in half. Since prime meridians are arbitrary this is based on the Greenwich Prime Meridian.
It is sometimes called the Greenwich meridian or 0° longitude.
The Prime Meridian is complete exactly as it appears on maps and globes. It forms a half-circle, and it isn't missing anything. When joined with the Prime Meridian, the 180-degree meridian of longitude forms a complete great circle.
The Prime Meridian and 180° longitude are half-a-world apart.So 11 AM at 180° corresponds to 11 PM on the Prime Meridian.
Africa
Yes and no! The Prime Meridian is the technical term for the line of longitude (0º) which passes through Greenwich, UK.
Great Britain
No. The meridian of 180° longitude ... exactly opposite the Prime Meridian and half a world away ... runs through the Aleutian chain.
The Prime Meridian The International Date Line
Half of the Prime Meridian is in the northern hemisphere, and half of it is in the southern one. Also, it is half of the boundary line between the eastern and western hemispheres, so it's in either both or neither of those.
prime meridian!Prime Meridian!PRIME MERIDIAN!PrImE MeRiDiAn!
The Prime or Greenwich meridian. 0 degrees longitude