At the moment there hasn't been a decision to show the South Wales Derby, currently scheduled for Sat 2 April.
I notice that Rangers v Celtic is on Sky Sports football on the Sunday at 12 with two Prem games following. They are also showing a game at 5.30pm on the Saturday. BT Sport is showing Liverpool v Watford on the Saturday at 12.30.
On the same weekend QPR are playing Fulham and there is the EFL cup final, though that might get shown while a Prem game is on.
Is it possible that the Derby might not even get shown on Sky? With 5 weeks to go it would be good to find out.