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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 first Sunday in November to the second Sunday in March.
Central Standard Time (CST) is a standard time zone in use from the first Sunday in November to the second Sunday in March—when Daylight Saving Time (DST) is not in effect. Central Daylight Time (CDT) is used during the remainder of the year.
02:25 pm. Sunday, May 26, 2024. Timezones by region. Since November 1883, there have been uniform time zones in the United States - before that, there was a jumble of over 300 different times and even more zones, which already varied from city to city. Each place set its own time based on the position of the sun.
The current situation is different only in that six Indiana counties have since been moved from the Central time zone to the Eastern time zone. 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.
The Central Time Zone, includes that part of the United States that is west of the boundary line between the eastern and central standard time zones ( view) and east of the boundary line between the central and mountain standard time zones described ( view ).
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 ).
These meridians are theoretically the centres of 24 Standard Time zones, although in practice the zones often are subdivided or altered in shape for the convenience of inhabitants; a notable example of such alteration is the eastward extension of the International Date Line around the Pacific island country of Kiribati.
