Pensacola/Five Flags gets it right:

[Hoosier]

KOTW Sprint Car Feature to be started no later than 10:00PM. Schedule Adjustments may be necessary

[zach51]

They usually start the headliner much earlier than even that, but yes, looking forward to going tomorrow night!

[Hoosier]

If I win the election, I'm putting in a 10:00 mandated start for the feature.