Where is 40oN, 120oE?  Where is 20oS, 60oW?  Help!

Hi Ciao and thanks for the question!

I'm assuming that the 'o' in '40oN' stands for degrees:

40 degrees north and 120 degrees east falls in the northern Yellow Sea
near the Chinese town of Shanhaiguan.  You can view the exact location
here:
http://www.mapquest.ca/maps/map.adp?latlongtype=degrees&latdeg=40&latmin=0&latsec=0&longdeg=120&longmin=0&longsec=0

20 degrees south and 60 degrees west falls in the northern region of
Paraguay close to the Bolivian border.  The nearest town is Leon Hill.
 You can view the exact location at:
http://www.mapquest.ca/maps/map.adp?latlongtype=degrees&latdeg=-20&latmin=0&latsec=0&longdeg=-60&longmin=0&longsec=0

For looking up locations by latitude and longitude I recommend using
Mapquest.  They have a feature that allows you to enter the latitude
and longitude and then get a map of the corresponding location. (Note
that longitudes that are west of Greenwich, England are entered as
negative values and latitudes that are south of the Equator are
entered as negative values).

The website can be found at:
Mapquest
http://www.mapquest.ca/maps/latlong.adp

Search Terms:
latitude longitude search
latitude longitude lookup

Hope that helps! If you have any additional questions concerning this
answer please do not hesitate to request clarification.

Best of luck!

-Blinkwilliams-ga