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Us time zones
Us time zones








The time zones established by the Standard Time Act, as amended by the Uniform Time Act, are Atlantic, eastern, central, mountain, Pacific, Alaska, Hawaii–Aleutian, Samoa, and Chamorro. §§ 260-64) establishes a system of uniform Daylight Saving Time throughout the Nation and its possessions, and provides that either Congress or the Secretary of Transportation can change a time-zone boundary. Today, the Uniform Time Act of 1966 (15 U.S.C. This responsibility was transferred from the Interstate Commerce Commission to DOT when Congress created DOT in 1966. Local decisions on which time zone to adopt were usually influenced by the time used by the railroads.įederal oversight of time zones began in 1918 with the enactment of the Standard Time Act, which vested the Interstate Commerce Commission with the responsibility for establishing boundaries between the standard time zones in the continental United States. This dataset represents the official written time zone boundaries from USDOTs Office of General Counsel per 49 CFR Part 71. States and municipalities then adopted one of the four zones, which were the eastern, central, mountain, and Pacific Time zones. and Canadian railroads adopted a four-zone system to govern their operations and reduce the confusion resulting from some 100 conflicting locally established “sun times” observed in terminals across the country. From east to west they are Atlantic Standard Time (AST), Eastern Standard Time (EST), Central Standard Time (CST), Mountain Standard Time (MST), Pacific. Eastern Time Zone (ET): UTC-05:00 includes 22 states in the eastern part of the contiguous United States, including some parts of Canada, Mexico, Panama, and the Caribbean islands. These time zones encompass most of the contiguous United States.

us time zones

Each time zone is set one hour apart, which allowed the railroads to.

us time zones

The oversight of time zones was assigned to DOT because time standards are important for many modes of transportation. Likely the most well-known include Eastern, Central, Mountain, and Pacific Time Zones. The time zones, Eastern, Central, Mountain and Pacific, are still in place today. Department of Transportation (DOT) oversees the Nation's time zones and the uniform observance of Daylight Saving Time. The eastern half of the state, including Chattanooga, is on Eastern time.The U.S. The majority of the western half of the state, including Nashville, is on Central. Tennessee: Just like Kentucky, Tennessee is divided into two distinct time zones.While the entire Lower Peninsula follows Eastern time, the UP has a sliver of Central time along its border with Wisconsin. Michigan: The division between Central and Eastern time zones runs through the middle of Lake Michigan and curves west through Michigan's Upper Peninsula.The western part of the state, including Bowling Green, is on Central while the eastern half, including Louisville and Lexington, is on Eastern time.

us time zones

Kentucky: Kentucky is cut almost in half by time zones.In the southwest, a slightly larger section of Indiana is in the Central zone. In the north, Gary is on Central time because of its proximity to Chicago, while South Bend is on Eastern time. Indiana: This state has two small pockets of Central time on the western side.

us time zones

The rest of the state is in the Eastern time zone.

  • Florida: The majority of Florida's panhandle, including the city of Pensacola, is on Central time. To obtain your local time here in the United States, you need to subtract a certain number of hours from UTC depending on how many time zones you are away.









  • Us time zones