The Pac-12 site says 1:15, 2:15 MDT (so I guess PDT is the official time of the Pac-12). My cable guide says MAIN Pac-12 Network; recently someone posted it was just going to be on Mountain Regional Pac-12 channel. Not so.
PDT has long been the official time zone of the channel. California, Oregon, and Washington seem to be considered more important than Utah, Colorado, and (for half the year) Arizona.