If you're looking to have a running clock on the page, then grtfercho's solution will work.
However, if you're just looking to stamp the time/date on the page with the current time/date on the server, then there are functions that will do that for you based on the language you are utilizing (if not html).
For example, php has the functions time() and date() that return the server's time and date, not the client's.
*cLFlaVA
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A polar bear walks into a bar and says, "Can I have a ... beer?"
The bartender asks, "What's with the big pause?