I can understand the request. I use the real world clock in the game a lot because I don't own any portable clocks in my house and it is cumbersome to keep looking at my phone to get the time.

I also play with a baby monitor next to my tv because I am on nighttime baby duty in case my little one wakes up. It would be hard to add one more screen to watch for me even if I did buy a clock by my tv. So I can understand the OP's desire to see multiple clocks on screen.