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出典:Wikipedia
出典:『Wikipedia』 (2011/07/05 10:09 UTC 版)
The Paris Meridian is a meridian line running through the Paris Observatory in Paris, France—now longitude 2°20′14.025″ east. It was a long-standing rival to Greenwich as the prime meridian of the world, as was the Meridian of Antwerp in Antwerp, Belgium.
paris meridian