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Why is there a need to designate a prime meridian?

Updated: 8/21/2019
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9y ago

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Peyton Beahan

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2y ago
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9y ago


There is a "natural" basis for latitude. The north and south poles are the ends of the
Earth's axis of rotation, and the line formed by all points that are equal distances from
both poles is the Equator.

There is no such natural basis for longitude. The zero reference for longitude could have
been anywhere. So when you state the longitude of a place, the natural response that you
must expect is "degrees east or west of WHAT ? ? ?". So it had to be defined and adopted,
just in order to let longitude numbers be understood, without the need to describe where
the starting line is every time.

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8y ago

Since the Earth is round, you need to determine where to start counting from to make any map or chart make sense. And if different mapmakers choose different starting points, it'd just make a lot of pointless difficulty in keeping track of what people using different maps were talking about.

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Q: Why is there a need to designate a prime meridian?
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Related questions

Does prime meridian need to be capitalized?

you capitalize prime meridian because it is an important thing a proper noun:)


What imaginary line is located at 0 dergees longitude?

prime meridian!Prime Meridian!PRIME MERIDIAN!PrImE MeRiDiAn!


What is the name of the meridian that is located at 0 longitude?

This is called the Prime meridian, it passes through Greenwich, England.


How far is college station from prime meridian?

You need to specify which college. The prime meridian is at Greenwich, just east of the centre of London, UK.


What comes before meridian?

prime the prime meridian


What is the name of 0 longitude?

This is the Greenwich Meridian, the Prime Meridian of the World.


What is the sixth prime meridian?

There is only a single Prime Meridian.


What is the latitude in the prime meridian?

The prime meridian is at all latitudes.


What is the starting point for measuring longitude?

the prime meridian is the starting point when measuring the longitude


What prime meridian is Virginia in?

Virginia is not in or on a prime meridian. There's only one "prime meridian" and it is in Greenwich, London, England.


What is the name of the line 0 longitude?

The line name at 0 degrees longitude is commonly referred to as the Prime Meridian. This line passes through Greenwich, London, United Kingdom and can also be referred to as the International Meridian or Greenwich Meridian.


The zero degree longitude line called?

This imaginary circle is called the prime meridian. it is an imaginary line that circles the globe vertically and is typically measured as beginning in Greenwich, England.