Well, this definitely happened while no one was here, but it may have been an auto update. I also downloaded an alarm clock program about 6 weeks ago, and I don't know if that could've interfered somehow. I know the traps and perils of time travel, and I haven't done it (save for daylight savings)in years. I don't even like to pause, knowing that it can effect the nursing clock by a few minutes.

Anyway, a complete reboot of the system later, and it is back to normal, except for the 1.9 million tech points that I now have.