It is the Prime Meridian, which is zero degrees longitude, and runs from the North Pole, through the Royal Observatory, Greenwich, London, England, and to the South Pole.
55 degrees east is the longitude.
Gansu Sheng, China.
zero
126 degrees on the East Longitude.
180
The degree of longitude equivalent to east of 5 degrees west longitude is 355 degrees. This is because there are 360 degrees in a full circle, so moving 5 degrees east from 5 degrees west would place you at 355 degrees longitude.
Antarctica
They sit at the 40 degree East line of longitude.
You can determine if your location is east or west longitude by looking at the numerical value of your longitude coordinates. If the value is positive (+) then you are in the eastern hemisphere, indicating east longitude. If the value is negative (-) then you are in the western hemisphere, indicating west longitude.
There is no such city because longitude only measures east and west and not north and south.
They sit at the 40 degree East line of longitude.
For each degree of longitude to the east, the local mean time is four minutes ahead.