Atomic clocks! My daughter decided we needed one...perhaps because we couldn't set the clocks we had and perhaps she knew we'd never heard of an atomic clock. For the few of you who are slower than we are, an atomic clock is one that you never have to set. It sets itself and it knows what time zone you are in!! We were impressed!
This morning our atomic clock was 15 minutes slow. I knew it couldn't be the clock so I changed the battery. That thing went to work resetting itself. But it set itself to the wrong time zone. I tried reasoning with it but it kept insisting it was either 2 hours before or 2 hours after our real time.
I walked it to the window, pressed the central time zone button, and it finally could see the heavens, I assume, and it immediately did the right time. An atomic clock is one of our little everyday miracles, in my opinion! Get one if you haven't already.