I don't know if this will help, but I noticed what I think is a quirk or an oversight with the Fire (maybe it applies here too.)
It says it gets the time automatically, which it did, except that I still had to go into the date and time settings to change the time zone. You would think that it would be like a cell phone and pull the right time zone geographically too.
I expect that's due to the difference between being able to connect via a cell phone network and only being able to connect via WiFi. I mean, I have to tell all my computers the right time zone when I first set them up too. But after that they know how to keep track and make the proper adjustments even for switching to and from DST.