Time Running Amok

I don't know what's going on here, but I have two clocks that have suddenly gone into overdrive.  One of them, in my bedroom, has always chosen to be eleven minutes fast.  I have reset it numerous times and it always prefers the future, apparently.  It seemed easier to accept it than reset it, so I just got used to deducting eleven minutes from whatever it displayed. 

Recently, however, for some unknown reason, it has become extremely hyperactive -- changing minutes ever thirty seconds -- yes, I stood there with a stopwatch and timed it.  I first realized how inaccurate it was this morning.  I opened my eyes and it displayed 8:22.  So, I got up, thinking to myself that it sure was dark in the room for 8:22.  Just to be sure, I uncovered the other clock in the room -- I cover it when I go to bed because the display is so bright I can practically apply makeup by it.  That clock, one that actually sets itself, showed that it was not quite 7 AM. 

Obviously, my next move was to go back to bed and sleep another hour and a half.  Mission accomplished!

I did reset the erring clock before I went to make my breakfast, which was around 9.  After breakfast I headed to the treadmill to walk for 30 minutes (getting in shape for Disneyland).  Luckily, I found that I can tie my Kindle onto the treadmill and read, making the exercise almost enjoyable.  Once finished with the treadmill, I moved to the recliner to watch a DVR'd program, and noticed that the clock by the television was hours ahead of the actual time.  I knew I had reset the clock yesterday -- hearing Twilight Zone music?  So, I reset it again, noticing that the ":" between the hours and minutes seemed to blinking at a much quicker rate than usual.  I used the stopwatch again and found that this clock, like the one upstairs, was changing minutes every thirty seconds. 

I'm upstairs again right now and the clock I reset about 3 1/2 hours ago is now about 4 hours ahead of the real time.  The two clocks are not the same brand, they were not bought at the same time, they don't share a breaker -- so isn't it strange that they should both start exhibiting the same behavior at the same time?

Maybe I should take them outside and put a stake through them.  Witchy clocks!