You need to specify a location east or west of the Prime Meridian (zero longitude). For instance: Paris is longitude 2° 20' 56.4504'' E while Belfast is longitude 5° 55' 35.1732'' W
"60°W" is 60 degrees west of the Prime Meridian. "15°E" is 15 degrees east of the Prime Meridian. If they're both at the same latitude, then "60°W" is four times as far from the Prime Meridian (in miles or km) as "15°E" is. But if they're not at any particular latitudes, then it's quite possible for "15°E" to be farther from the Prime Meridian (in miles or km) than "60°W" is.
Both of those longitudes are marked by the same meridian ... halfway around the globe from the Prime Meridian.
The Prime Meridian crosses Antarctica in the same place that it crosses any geography that it touches: at zero degrees E/W, which turns into 180 degrees E/W-- the International Date Line -- at the South Pole, which is 90 degrees South Latitude.
180° is halfway around a circle or a sphere. Beginning at the Prime Meridian, you can travel EITHER east OR west, and after you have traveled 180 degrees, you'll arrive at the same line either way ... the meridian of 180° E and W longitude, which is halfway around the Earth in either direction from the Prime Meridian.
The coordinates of Lisbon are 38.7223° N, 9.1393° W. Which means that Lisbon is West of the Prime Meridian (the Prime Meridian is zero degrees of Longitude).
"60°W" is 60 degrees west of the Prime Meridian. "15°E" is 15 degrees east of the Prime Meridian. If they're both at the same latitude, then "60°W" is four times as far from the Prime Meridian (in miles or km) as "15°E" is. But if they're not at any particular latitudes, then it's quite possible for "15°E" to be farther from the Prime Meridian (in miles or km) than "60°W" is.
0, e 0, w
They're labeled E (or W) to show that they're (E)ast or (W)est of the prime meridian (which is the line of longitude passing through Greenwich Observatory near London). 15 degrees East and 15 degrees West are the same distance from the prime meridian, but in opposite directions.
The Prime Meridian is 0 degrees E or W and goes from pole to pole through Greenwich, England, Europe, Africa, to Antarctica.
Both of those longitudes are marked by the same meridian ... halfway around the globe from the Prime Meridian.
The Prime Meridian crosses Antarctica in the same place that it crosses any geography that it touches: at zero degrees E/W, which turns into 180 degrees E/W-- the International Date Line -- at the South Pole, which is 90 degrees South Latitude.
180° is halfway around a circle or a sphere. Beginning at the Prime Meridian, you can travel EITHER east OR west, and after you have traveled 180 degrees, you'll arrive at the same line either way ... the meridian of 180° E and W longitude, which is halfway around the Earth in either direction from the Prime Meridian.
The coordinates of Lisbon are 38.7223° N, 9.1393° W. Which means that Lisbon is West of the Prime Meridian (the Prime Meridian is zero degrees of Longitude).
That meridian is labeled " 60°W ".
W
15 degrees W (15 degrees west) 30 degrees W (30 degrees west) and so on.
No. However, Cardiff is located very near the Prime Meridian. Its longitude is: 3°11′12″W