time

USA follows Central Time (CT) . Specifically, it is Central Standard Time CST) when observing standard time (Winter), and Central Daylight Time (CDT) when observing daylight savings (Summer). The Central Time Zone observes standard time by subtracting six hours from UTC during standard time (UTC-6) and five hours during daylight saving time (UTC-5). see more details on wikipedia : http://en.wikipedia.org/wiki/Central_Time_zone