Question

what is Greenwich meridian? ​

Answer 1

Answer:

Everywhere on Earth has a position because we can assign them geographic coordinates. We measure these coordinates as lines latitude and longitude.

The 0° line of longitude starts at the Prime Meridian. It’s also called the Greenwich Meridian because it runs through Greenwich, England. Then, we can measure 180° to the west or 180° to the east.

Answer 2

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A greenwich meridian, based at the Royal Observatory, Greenwich, in London, England, was established by Sir George Airy in 1851. By 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.

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