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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.. 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 ...
List of tz database time zones. The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2024a of the tz database. [2]
Country Code (s)Tz IdentifierEmbedded CommentsTypemost areas: CB, CC, CN, ER, FM, MN, SE, ...CanonicalJujuy (JY)CanonicalLa Rioja (LR)CanonicalMendoza (MZ)CanonicalTime in the United States. In the United States, time is divided into nine standard time zones covering the states, territories and other US possessions, with most of the country observing daylight saving time (DST) for approximately the spring, summer, and fall months. The time zone boundaries and DST observance are regulated by the Department ...
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The history of standard time in the United States began November 18, 1883, when United States and Canadian railroads instituted standard time in time zones. Before then, time of day was a local matter, and most cities and towns used some form of local solar time, maintained by some well-known clock (for example, on a church steeple or in a ...
Central Time Zone. CST or UTC-6. The Central Time Zone subtracts six hours from UTC during standard time (UTC−6) and five hours during daylight saving time (UTC−5). This time zone is called Central Standard Time (CST) during standard time ( Winter ). It is called Central Daylight Time (CDT) during daylight saving time ( Summer ).
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Daylight saving time in the Americas. Daylight saving time in the Americas is the arrangement in the Americas by which clocks are advanced by one hour in spring and moved back in autumn, to make the most of seasonal daylight. The practice is widespread in North America, with most of Canada and the United States participating, but much less so ...
