Weird thing happened this morning. When I got in the van around 9 AM the clock had moved itself back one hour instead of forward one hour. The only way to correct the clock was to disable synchronizing to GPS and then to bump it forward two hours since it had incorrectly set itself back one hour. Later in the day, around 1:30 PM the clock had now bumped itself forward by two more hours! This time, I re-enabled the synchronization to GPS and the time then displayed correctly.