I admit there can be problems with the maintaining of the autotime, however, I have found that the PBS stations are quite responsive if you call them up and ask them to correct the problem.
I've done this a few times and I've always, eventually gotten satisfaction.
While the station can screw your clock up, power outages while on vacation you can absolutely count on.
Right now, I run my A/V and computer of a 2200 v-a (1600watt) Tripp lite server rated UPS.
That also solves the problem of the Philips HDD DVDR buffer which dumps when there is a power outage.
What is really bad is that the digital time code will probably be spot on. I would guess it is synced with GMT like those cheap "atomic clock" clocks.