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Operators of the new railroad lines needed a new time plan that would offer a uniform train schedule for departures and arrivals. Four standard time zones for the continental United States were introduced at noon on November 18, 1883, in Chicago, IL, when the telegraph lines transmitted time signals to all major cities. [4] [5]
The North American Central Time Zone (CT) is a time zone in parts of Canada, the United States, Mexico, Central America, and some Caribbean islands. [1]In parts of that zone (20 states in the US, three provinces or territories in Canada, and several border municipalities in Mexico), the Central Time Zone is affected by two time designations yearly: Central Standard Time (CST) is observed from ...
The evolution of United States standard time zone boundaries from 1919 to 2024 in five-year increments. Plaque in Chicago marking the creation of the four time zones of the continental US in 1883 Colorized 1913 time zone map of the United States, showing boundaries very different from today Map of U.S. time zones during between April 2, 2006, and March 11, 2007.
The Asia/Urumqi entry in the tz database reflected the use of Xinjiang Time by part of the local population. Consider using Asia/Shanghai for Beijing Time if that is preferred. This is the only time zone in the world that uses 30-minute DST transitions. Choose a zone that observes CET, such as Europe/Paris.
August 15, the Battle of Fort Dearborn. 1816: The Treaty of St. Louis is signed in St. Louis, Missouri. Ft. Dearborn is rebuilt. 1818: December 3, Illinois joins the Union and becomes a state. 1820 Chicago. 1821 Survey of Chicago. 1830. August 4, Chicago is surveyed and platted for the first time by James Thompson.
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. ... Chicago, IL: A. N. Marquis Company.
GNIS feature ID. 0428803. Website. chicago.gov. Chicago[a] is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 census, [9] it is the 3rd-most populous city in the United States after New York City and Los Angeles.
Map of U.S. time zones with new CST and EST areas displayed. Some U.S. time zones, such as the Samoa Time Zone, are not on this map. This is a list of the time offsets by U.S. states, federal district, and territories. For more about the time zones of the U.S. see time in the United States. Most states are entirely contained within one time zone.