I live in the Central time zone and it keeps displaying EST after a restart? I go into tools and check the time settings and everything is correct? But every time after a RESTART it shows EST? So strange? Not really a big deal for me as we keep ours in hibernation mode most of the time and the settings stick so I dunno?
Anyways the only way right now (as I have not been successful in finding a fix) is to go back into date & time take the check mark out of "Automatic" and re-select your time zone (even though it is showing as the correct one) that will fix the issue until your next restart.