There are two. They are the Greenwich Meridian and 180 degrees longitude, the originally defined International Date Line.
The Ural Mountains in Russia are considered the boundary between Europe and Asia. The line of longitude that runs through this mountain range is approximately 60 degrees east.
Prime meridian, from which longitude is measured both east and west, is the main line of longitude.
The longitude of a point on earth is the angle, east or west, between that point and a certain reference line on the earth. If you take a globe or a map and draw a line through all the points that have exactly the same longitude, the line you get is the meridian of that longitude. The reference line is the meridian of zero longitude, called the "Prime Meridian". On that line are all the points on earth that have zero longitude. The line joins the north and south Poles, and passes through the Royal Observatory at Greenwich, a suburb of London.
Brazil, Paraguay, and Uruguay all lie entirely to the east of the 60w longitude line.
The Ural Mountains lie almost exactly on the 60 degrees east line of longitude.
0 degrees longitude is the dividing line between the eastern and western hemisphere. This is also the intl date line.
The Prime Meridian is the line of 0 degrees longitude, dividing the Earth into the Eastern and Western Hemispheres. Any location east of 100 degrees west longitude falls in the Western Hemisphere because it is measured westward from the Prime Meridian towards the International Date Line. Thus, the half of the map east of 100 degrees west is in the Western Hemisphere.
Places east of Greenwich at 180 degrees longitude include parts of Russia, Antarctica, and the Pacific Ocean. The 180-degree longitude line, also known as the International Date Line, is located opposite of the Prime Meridian (0 degrees) and serves as the dividing line between one calendar day and the next.
The Ural Mountains in Russia are considered the boundary between Europe and Asia. The line of longitude that runs through this mountain range is approximately 60 degrees east.
It's the boundary line between the two regions, and the zero of both.
Coordinates given in WikiPedia indicate a longitude of 21 degrees east. This puts the point at which this coordinate is set east of the 20 degree line.
80 degrees east longitude
The Prime Meridian, which is at longitude ZERO degrees, and the International Date Line. The International Date Line is supposed to be at longitude 180 degrees, but it varies quite a distance for political reasons.
Every longitude on Earth forms a line between the north and south poles. Name any number from zero to 180, then call it east or west, and you have a different longitude.
Baghdad lies near the 45 east line of longitude.
Prime meridian, from which longitude is measured both east and west, is the main line of longitude.
The longitude of a point on earth is the angle, east or west, between that point and a certain reference line on the earth. If you take a globe or a map and draw a line through all the points that have exactly the same longitude, the line you get is the meridian of that longitude. The reference line is the meridian of zero longitude, called the "Prime Meridian". On that line are all the points on earth that have zero longitude. The line joins the north and south Poles, and passes through the Royal Observatory at Greenwich, a suburb of London.