Actual Kickoff Time

Is there anywhere reliable to find out the actual kickoff times for games?  I know noon games usually start pretty close to noon.  But, I never know with these primetime games.  I feel like I've seen "Kickoff time: 7:30" for games before, but seems like a lot of times there are 20 minutes worth of pregame tv stuff.  I feel like I've even seen kickoffs up to 40 minutes past when most internet sites say the kickoff time is.

And in a fairly related question, does anyone know the actual time for tonight's kickoff?

Thanks and Go Blue!