Central Time Zone

(Redirected from Central Standard Time)

The North American Central Time Zone (CT)[1] is a time zone in parts of Canada, the United States, Mexico, Central America, some Caribbean islands, and part of the Eastern Pacific Ocean.

Central Time Zone
Time zone
  Central Time Zone
UTC offset
Current time
01:40, 1 December 2023 CST [refresh]
Observance of DST
DST is observed in some of this time zone.

Central Time Zone is affected by two time designations yearly: Central Standard Time (CST) is observed from the second Sunday in November to the second Sunday in March. It is six hours behind Coordinated Universal Time (UTC) and designated internationally as UTC-6.[2] From the second Sunday in March to the second Sunday in November most of this zone (20 states in the US and three provinces or territories in Canada) observes daylight saving time (DST), creating the designation of Central Daylight Time (CDT) which is five hours behind UTC and known as UTC-5 internationally.[3]

Regions using Central Time edit

Canada edit

The province of Manitoba is the only province or territory in Canada that observes Central Time in all areas.

The following Canadian provinces and territories observe Central Time in the areas noted, while their other areas observe Eastern Time:

Also, most of the province of Saskatchewan is on Central Standard Time year-round, never adjusting for Daylight Saving Time. One major exception includes Lloydminster, a city whose borders overlap both Alberta and Saskatchewan. The city charter[4] stipulates that it shall observe Mountain Time and DST, putting the community on the same time as all of Alberta (UTC-7) in the winter, and in time with Saskatchewan (UTC-6) during the summer.

United States edit

Ten states are contained entirely in the Central Time Zone:

Five states are split between the Central Time Zone and the Mountain Time Zone:

Five states are split between the Central Time Zone and the Eastern Time Zone:

Additionally, Phenix City, Alabama, and several nearby communities in Russell County, Alabama, unofficially observe Eastern Time. This is due to their close proximity to Columbus, Georgia, which is on Eastern Time.[5]

Although legally located within the Central Time Zone, Kenton, Oklahoma—located to the adjacent east of the defined border of the Central and Mountain time zones (at the Oklahoma−New Mexico state line)—unofficially observes Mountain Time.[6] This is reportedly because most people who interact with the town reside in either New Mexico or Colorado.[7][6]

Mexico edit

Most of Mexico—roughly the eastern three-fourths—lies in the Central Time Zone, except for five northwestern states (Baja California, Baja California Sur, Sinaloa, Sonora, and most of Nayarit) and one southeastern state (Quintana Roo).

The federal entities of Mexico that observe Central Time:

Central America edit

Out of the Seven countries comprising Central America, all but 1 use Central Standard Time year-round:

Belize, Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua.

Panama being the exception which recognizes Eastern Standard Time (UTC-5)[9] year round.


Eastern Pacific and South America Coastline edit

The Galápagos Islands in Ecuador uses Central Standard Time all year-round; the remainder of Ecuador uses Eastern Standard Time.[10] Both Easter Island and Salas y Gómez Island in Chile use times that are the same as CST and DST, but they are called by other names. During the Southern Hemisphere winter (1st Sunday in April to 1st Sunday in September) the Islands use Easter Island Standard Time (UTC-6) and Easter Island Summer Time (UTC-5) during the Southern Hemisphere summer (1st Sunday in September to 1st Sunday in April);[11] the remainder of Chile uses Atlantic Time Zone which has both standard (UTC--4 and daylight times UTC-3).

Central Daylight Time edit

Daylight saving time (DST) is in effect in much of the Central time zone between mid-March and early November. The modified time is called "Central Daylight Time" (CDT) and is UTC−05:00.

United States Time Zones that observe DST were affectively changed by the Energy Policy Act of 2005. Beginning in 2007, DST would now begin at 2 a.m. on the second Sunday in March instead of the first Sunday in April, moving the time from 2 to 3 a.m. And DST would end at 2 a.m. on the first Sunday in November instead of the last Sunday in October, moving the time from 2 to 1 a.m.

At the time, Mexico decided not to go along with this change and observed their horario de verano from the first Sunday in April to the last Sunday in October. In December 2009, the Mexican Congress allowed ten border cities, eight of which are in states that observe Central Time, to adopt the U.S. daylight time schedule effective in 2010. However, October 2022 was the last CDT in Mexico, as they abolished DST. And the US is seeing traction in the same direction with the Sunshine Protection Act that proposes legislation that would permanently end daylight Savings Time in the US.[12]

Alphabetical list of major Central Time Zone metropolitan areas edit

See also edit

References edit

  1. ^ "Central Time – CT Time Zone". www.timeanddate.com. Retrieved November 22, 2023.
  2. ^ https://www.bts.gov/explore-topics-and-geography/geography/geospatial-portal/history-time-zones-and-daylight-saving
  3. ^ "Central Time (CST/CDT) | GMT". greenwichmeantime.com. Retrieved May 22, 2020.
  4. ^ [1]
  5. ^ "Parts of Eastern Alabama split between 2 time zones". Archived from the original on March 10, 2016. Retrieved March 22, 2009.
  6. ^ a b Young, Norma Gene. "Cimarron County", Encyclopedia of Oklahoma History and Culture, Oklahoma Historical Society, Accessed June 30, 2015.
  7. ^ Bright, Sheilah (September 19, 2012). "The Last of Kenton". This Land Press. Archived from the original on September 27, 2020. Retrieved September 9, 2020.
  8. ^ "Leyes Bibliography" (PDF). Archived from the original (PDF) on November 2, 2022. Retrieved November 8, 2022.
  9. ^ "Panama", The World Factbook, Central Intelligence Agency, November 14, 2023, retrieved November 22, 2023
  10. ^ "Ecuador", The World Factbook, Central Intelligence Agency, November 15, 2023, retrieved November 23, 2023
  11. ^ "Timezones and time changes in Chile". Worlddata.info. Retrieved November 23, 2023.
  12. ^ S.623 - Sunshine Protection Act of 2021 US Congress

External links edit