Meridian Coordinates -

Primarily on the arm and hand.

Every meridian is exactly the same length, stretching approximately 20,003 kilometers (12,429 miles) from pole to pole.

The Prime Meridian passes through the Royal Observatory in Greenwich, England. Value: It is designated as 0° longitude. meridian coordinates

But in 99% of practical contexts, it means .

When someone says , they might also refer to: Primarily on the arm and hand

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: These are imaginary north-south lines that run from the North Pole to the South Pole. The Prime Meridian : Located at 0° longitude in Greenwich, England Value: It is designated as 0° longitude

It sounds like you're asking about — likely in the context of astronomy , geodesy , or mapping .

While often thought of as simple north-south lines, the term "meridian" in surveying has more specific meanings. The choice depends on the project's scale and required precision. The four main types are: