"Please wrtite the function as per above requirement"
lolwut?!?!
Sorry to be blunt here ..... but you've been given several answers. TC provides plenty built in date functions so you can easily do the Saturday/Sunday part. All you need to do on top of that is check against a list of dates (which you've provided).
ie. Everything is there to put this together yourself. And it doesn't strike me a very complex task. But you want some random forum poster to write it for you???
Sorry to say it ...... but if you want to learn, and improve, you would be far better doing this yourself! (It's also your job!!!)
