Places east of Greenwich for 180 degrees are called the International Date Line.
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 prime meridian, which is located at 0 degrees longitude and runs through Greenwich, England.
The line that divides the earth into the eastern and western hemispheres is called the Prime Meridian, which runs through Greenwich, London, and has a longitude of 0 degrees.
Parallels are numbered based on their angular distance north or south of the Equator, with the Equator itself as 0 degrees. Meridians are numbered based on their angular distance east or west of the Prime Meridian (located in Greenwich, England), with the Prime Meridian itself as 0 degrees.
The Greenwich Meridian divides the globe into eastern and western hemispheres by serving as the prime meridian, with locations to the east being in the eastern hemisphere and those to the west in the western hemisphere. The International Date Line, located opposite the prime meridian, serves as the line where the date changes, further dividing the globe into eastern and western hemispheres in terms of time differences.
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.
Greenwich is a place in England. If you look at a map, places to the left are west of Greenwich and places to the right are east. A meridian is any line which runs from north pole to south pole and the meridian that runs through Greenwich is called the Greenwich Meridian and by definition is zero degrees. All other meridians are measured in degrees from zero. E.g. New York is -74 degrees, meaning it's west of Greenwich by 74 degrees.
Plus.
Mayo is about 9 degrees west of Greenwich.
Asia
England's Royal Observatory in Greenwich (the source of Greenwich Mean Time - GMT) is 0 degrees longitude and the reference point. 120 degrees East is the longitude of the east coast of Taiwan. At that longitude, 1/3 of a circumference from Greenwich, the standard time (and date) should be 8 hours ahead of Greenwich. So if it is 4am in Greenwich, it should be noon in Taiwan.
!80 degrees east of Greenwich and then one crosses over to West Longitude
Longitude
360 degrees. From Greenwich (London) 180 degrees west and 180 degrees east.
It is 50 degrees North of the Equator and 30 degrees East of the Greenwich Meridian.
The 0 degrees longitude line is known as the Greenwich Meridian. From its name, it originated in Greenwich, a district in East London.
Prime meridian. It passes through Greenwich, England and is the starting point for East and West longitudes.