You mean an on-screen timer?
/support
Not quite. A little background to my server, I was thinking about making some kind of time trial race. When a player crosses the starting point, their timer starts (not visible). Along the way, the player would reach checkpoints that would display their time with a center print. As soon as a player makes it to the end, the timer would stop and display the player's time.
Having an always visible timer would be nice as well. You could have it be server-sided, where it would center/bottom-print that would update every second. Or you could have the display be client-sided, where a gui displays the time.