One issue here is, in this digital age, there is a significant delay in network show making to the local station, then the cable company, then to my box, and then to the TV. I'm not how much delay is in each of those segments, but the total delay is about 12 seconds. I.e., network shows always start about 12 seconds after the hour as determined by WWV or WWVB. Remember when you used to be able to set clocks by when shows started?