How to show local time to viewers

The version of PHP on the server is 4.1

Now only time at server is displayed

I am searching everywhere but still stuck

is there some way to get the timezone form the client browser
without user interaction ?

Can you use JavaScript? It's fairly easy to make a clock with JavaScript since its browser side.

you clould use dhtml to do it. don't know if this is exactly what you want but the website is a great resource..

http://www.dynamicdrive.com/dynamicindex6/localtime.htm