[bigiain]

I was pleasantly surprised to see my Pebble work out that I'd crossed a state border into a timezone with no summertime on a roadtrip over xmas/new-year, within 5 or 10 minutes the time on the Pebble updated to "local time".

Interestingly, not being able to _rely_ on whether or not my technology is going to get things like that right reliably might be worse than requiring manual updates to reset stuff like summertime. I always _knew_ the dumb old clock in the ~20 year old car hadn't changed timezone, I was never quite sure which of the phones, tablets, or laptops we had with us were displaying "local time" - every now and then I'd bump into two showing times an hour apart and be confused for a few seconds while I worked out if the earlier or later time was "correct".