Which websites can I check the real time of other countries of the world??

Here are some-

http://www.timeanddate.com/worldclock/
http://www.worldtimeserver.com/
http://www.worldtimezone.com/

Why go to a website when you can have a world clock right on your desktop? I got my free world time clock at this website:
http://www.programming.de/

http://dir.yahoo.com/Science/Measurements_and_Units/Time/Current_Time/

This link has a list that could help you.