How to display time on the screen of a panasonic plasma TV

Well, just looking at it, I don't think it has a clock. I know this sounds bizarre, but it just looks like a TV that doesn't have a clock. I can't really say what about it makes it seem that way, and I could be wrong, but I suggest just getting a small clock (you should get a back-lit one so you can see it in the dark) and just putting it next to the TV.