Map Time Zone US

Map of state of USA with time zone. Color easy read map of  time zone state of USA. Free map of time zone of United States      

United States time zones      

Standard time zones in the United States are currently defined  at the federal level by law 15 USC. The federal law also  establishes the transition dates and times at which daylight saving time  occurs, if observed. It is ultimately the authority of the Secretary of  Transportation, in coordination with the states, to determine which  regions will observe which of the standard time zones and if they will  observe daylight saving time. As of August 9, 2007, the standard time  zones are defined in terms of hourly offsets from UTC. Prior to this  they were based upon the mean solar time at several meridians 15° apart  west of Greenwich (GMT).      

Only the full-time zone names listed below are official;  abbreviations are by common use conventions, and duplicated elsewhere in  the world for different time zones.      

The United States uses nine standard time zones. As defined by US law they are:      

   Atlantic Time Zone      

   Eastern Time Zone      

   Central Time Zone      

   Mountain Time Zone      

   Pacific Time Zone      

   Alaska Time Zone      

   Hawaii–Aleutian Time Zone      

   Samoa Time Zone (UTC−11)      

   Chamorro Time Zone (UTC+10)