Quick Question about the timing of the UT game tomorrow

The game was supposed to be last night for Big Monday, right? If so, does anyone know when it was pushed back a day. And my apologies if this has been touched on already, but all day yesterday I was looking forward to the game at 9:00 and then during one of the games on ESPN, I see the ad on the bottom right of the screen showing that KU plays UT on Tuesday at 9:00. I gave a "huh" and said that's news to me. Anyway, any help, knowledge, explanation would be greatly appreciated.