I don't know, i use a time server for the time on my imac, and it says its one hour later than my watch, i didn't know today was daylight savings, so i checked my phone, it got updated, my ipod, it got updated, but one thing, i have my time set to my place, but when i go into extras, then clocks, i also have my time set there, and it still says 1:33, when on the ipod system clock it says its 2:33, both set at GMT -5:00 (DC)