Auctiva time is same as eBay time: GMT -8 (Pacific Time)
If youre in one of the 18 counties in Indiana that use Central Time (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, Vanderburgh, Warrick, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski and Starke Counties), then you'd be GMT -6 (so Auctiva would be two hours earlier than you).
If youre in one of the other 74 counties in Indiana, then you're Eastern Time, which is GMT -5 (so Auctiva and eBay time would be 3 hrs earlier than you)
From you post, it looks like youre probably Eastern Time (GMT -5), which means that a launch time of 9pm Auctiva time would be midnight your time.