That leaves me wondering what they all watch if and when they do turn on their tvs!
They have this concept we don't understand in Europe. Reruns. This is their Xmas schedule for tonight. Notice the little red markers underneath:
It's basically like watching +1 channel, or dave, but transposed by several months. I think the only channel that ever came close to this in UK was E4, when they started "reruns" of Friends. But that lasted few years and they were rerunning all seasons in separate slots in multiple slots across entire week (so on random Monday you would end up with episode 17 of season 5, followed by episode 2 of season 9, followed by episode 24 of season 1, it all made sense but you could only watch the show start to end in order if you started watching it at 7:30 two years earlier and only tuned in for that slot for the next 236 working days).
Networks rerun episodes after November sweeps week (look up Nielsen ratings sweeps week for explanation of that), mostly from from middle of December until middle of January. 8 weeks from middle of January is the "mid-season" - that's where most of the networks try out new shows that didn't fit into the fall schedule. Some networks have dedicated short run shows, but most just use "selection B" that didn't make into the regular fall schedule. Just like regular fall shows, which are contracted with 23-24 episodes in mind, but only receive 12-13 episode orders before they go on "hiatus", the mid-season shows usually get 6-8 episode orders before extension. The surviving shows from fall season then return into their regular slots and run until end of spring, early summer.
The only exception to the rule is guaranteed hits - in the last years it would be something like "24" or "Lost", which would be slotted consecutively week after week without break in the middle and be paired with another successful show, often some sort of reality Talented Idol Dancing in Jungle, or something similar. One would run for 20-22 weeks from end of august to early spring, then the "hit" show would take over from Jan/Feb to May/June, creating one long "high budget" spot in a schedule for the advertisers.