I don't know exactly when they did it, but at some point in the last month or so the NCAA has revamped this year's Championships schedule. Not only lots of field events changing day, but also (and most importantly) starting the last day a couple of hours earlier. Indeed, an NCAA starting at 10:00 CT is unheard of. Does make it easier for lots of folks to drive home afterwards though.
New schedule linked on front page (and available in our Calendar section, of course).