I doubt it lasts until 1230-1 anyway. Starts at what 9 est and there is 4 fights on the main card.
I just checked the guide... it goes untill 11 pm. So this is a non issue. If you can't stay up that late to watch a really good FREE card then I don't know what to tell ya. Like it was said before, 1 day of work with 5 or 6 hours of sleep isn't going to kill you. Suck it up bud.