getTime() from another source?

I was woundering if anyone has ever run into the problem when they are useing the getTime(); command but wanted it to stay in a specific time zone no matter what zone the user is browsing in. So basically I want it to display central time, but if a user browsing my site is in Pacific time, I want the time to display in central, even if he/she tries to change the the clock on his/her computer. So I think the only other way to do this would get the time from another source? I tried getUTCTime(); but that time still changes if the user changes the clock on his/her computer. I was thinking if I could do something like getTime(); and inside the () , mabey I could put my IP address? I dont know, kinda stuck on this one. Thanks for any suggestions!