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What is the line of longitude for a place that is west of the prime meridian halfway between the prime meridian and the 180 line of longitude?
International Date Line
The meridian that runs through Greenwich, England, is internationally accepted as the line of 0 degrees longitude, or prime meridian. The antimeridian is halfway around the world, at 180 degrees. It is the basis for the International Date Line.
What is the longitude of the prime meridian west?
180° west
Longitudes for the Earth and Moon are measured from their prime meridian at 0° to 180° east and to 180° west. For all other Solar System bodies, longitude is measured from 0° (their prime meridian) to 360°. West longitudes are used if the rotation of the body is direct, that is, it follows the right hand rule.
What is the value of the longitude range from prime meridian to east or west?
Longitude is given as an angular measurement ranging from 0° at the Prime Meridian to +180° eastward and −180° westward. The Greek letter λ (lambda), is used to denote the location of a place on Earth east or west of the Prime Meridian.
What is 0 longitude called?
The prime meridian
The prime meridian is the line of 0° longitude, the starting point for measuring distance both east and west around the Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere.
Where is the meridian line?
Greenwich
The prime meridian is a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. It was first established by Sir George Airy in 1851, and by 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.
What is the longitude of the International Date Line?
180 longitude
The prime meridian also helps establish the International Date Line. The Earth’s longitude measures 360, so the halfway point from the prime meridian is the 180 longitude line. The meridian at 180 longitude is commonly known as the International Date Line.
Where is the line between east and West?
Prime Meridian
The Prime Meridian divides the globe into Eastern and Western hemispheres, just as the equator divides the globe into Northern and Southern hemispheres. The Prime Meridian is at 0 degrees longitude, just as the equator is at 0 degrees latitude. Use a time zone map to locate the Prime Meridian and Greenwich, England.
How do you find the longitude of a place?
To calculate your longitude, you therefore simply need to work out the time difference between noon at your location and noon at the Prime Meridian.
Is the 180 degree line of longitude east or west?
The opposite meridian is the 180 degree line of longitude, which is 180 degrees both east and west of the prime meridian.
Why is the 180 degree longitude line called the Anti Meridian?
The 180th degree meridian is also called the anti meridian. It is used to define the International Date Line. Because the Earth is spherical, traveling 180 degrees in either direction from the prime meridian will lead to 180 degrees longitude or the opposite meridian.
Where is the Prime Meridian located in the world?
The prime meridian, also known as the Greenwich meridian line, is labeled at zero degrees and runs through Western Europe and Western Africa. It is the reference on which all lines of longitude are based. For example, 30 degrees west longitude means 30 degrees west of the prime meridian.
Which is the opposite of the prime meridian?
The opposite meridian is the 180 degree line of longitude, which is 180 degrees both east and west of the prime meridian. The 180-degree longitude line also serves as an approximate basis for drawing the international date line and is known as the anti meridian. Lines of longitude are the imaginary, vertical lines along the surface of the Earth.