File:Equator_and_Prime_Meridian.svg · Wikimedia Commons · See Wikimedia Commons
prime meridian
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line of longitude, at which longitude is defined to be 0°
AI overview
The prime meridian is an imaginary line running around Earth where longitude is set at 0°, serving as the reference point from which all other longitudes are measured east and west. It matters because it provides a standardized way for people worldwide to specify locations on a map and coordinate activities that depend on knowing exact positions.
AI-generated from the Wikipedia summary — may contain errors.
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- Atlas Cosmographicae (Mercator) 033.jpg
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- Prime meridian
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Article
0°
Modern IERS Reference Meridian on Earth (interactive map)
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On the map
37 mapped locations
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Edmond Halley
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Gerardus Mercator
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Greenwich meridian
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Geography
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meridian circle
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International Time Bureau
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International Terrestrial Reference System
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Lunar distance
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United States
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Japan
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France
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Europe
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Spain
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Norway
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United Kingdom
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Africa
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Portugal
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Denmark
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Earth
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Algeria
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