posted by revalino .
if it is 6pm @ 45 degree east what time will it be at 60 degree west?
Check this map. Note that part of Russia and Saudi Arabia are 45 degrees east and are shown in purple. 60 degrees west goes through part of Greenland, Brazil and Argentina.
Step 1- 60 degree + 45 degree = 105 degree
Step 2 - 105 degree / 15 degree = 7 hrs
Step 3 - 6 pm + 7 hrs = 1 am
towards west calcualte 7hrs backwards and towards east calculate forward