What do you mean when you say the city is located at 120 degrees East?

Answer 1

A city at 120 degrees east is one-third of the way around the world east of Greenwich, England (a suburb of London, where the Royal Observatory is located.)

Manila, Philippines and Taipei, Republic of China are both pretty close to 120E.

Answer 2

It means that the place is somewhere on a line that is 1/3 of the way around the

earth to the east of the Prime Meridian. That line connects the north and south poles

and passes through the Arctic Ocean, Siberia, eastern China, the Philippines,

Indonesia, Australia, and Antarctica. The line is a little more than 12,000 miles long.

That "120° East" is the city's longitude. If you also knew its latitude, then you would

know how far north or south it is from the equator. That would tell you exactly where

it is on the line, right down to the point.

Answer 3

It means that the place is somewhere on a line that is 1/3 of the way around the

earth to the east of the Prime Meridian. That line connects the north and south poles

and passes through the Arctic Ocean, Siberia, eastern China, the Philippines,

Indonesia, Australia, and Antarctica. The line is a little more than 12,000 miles long,

and the city is somewhere on it.

That "120° East" is the city's longitude. If you also knew its latitude, then you would

know how far north or south it is from the equator. That would tell you exactly where

it is on the line, right down to the point.

Answer 4

Longitude 120 degrees East means that a city is 120 degrees to the East of the Prime Meridian (the Prime Meridian is zero degrees longitude). To pinpoint a city, the line of latitude is also required.
For instance: the coordinates for London, England is 51° 30' 35.5140'' N 0° 7' 5.1312'' W
Latitude is always given first, then the Longitude is given last.