User blog comment:Foreseer44/The Ridonculous Race will air September 7th on CN!/@comment-24952355-20150827112343/@comment-4742462-20150831193302

It actually says the same thing when I go and look it up on TVGuide, but it also claims to be showing Johnny Test a few hours earlier which seems unlikely.

While I was watching Steven Universe I saw the same trailer from last week again but this time it said "Coming next Monday" at the end.