UTC−06:00 explained

UTC−06:00 is an identifier for a time offset from UTC of −06:00. In North America, it is observed in the Central Time Zone during standard time, and in the Mountain Time Zone during the other eight months (see daylight saving time). Several Latin American countries and a few other places use it year-round.

As standard time (Northern Hemisphere winter)

Principal cities: Winnipeg, Chicago, Dallas, Houston, St. Louis, Minneapolis, Austin, Memphis, Kansas City, San Antonio, Nashville, New Orleans, Milwaukee, Oklahoma City, Reynosa

North America

CST is standard time in the 6th time zone west of Greenwich, centralized by the 90th meridian; used in North America in some parts of Canada, Mexico and the United States.^[1]

• Canada (Central Time Zone)
  • Manitoba
  • Nunavut
    • Kivalliq Region except Southampton Island (Coral Harbour)
  • Ontario
    • West of 90° west^[2]
• Mexico (near US border with Texas)
  • Chihuahua
    • The municipalities of Coyame del Sotol, Ojinaga and Manuel Benavides^[3]
  • Coahuila de Zaragoza
    • The municipalities of Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, Ocampo, Piedras Negras, Villa Unión and Zaragoza
  • Nuevo León
    • The municipality of Anahuac
  • Tamaulipas
    • The municipalities of Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo, Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso and Matamoros
• United States (Central Time Zone)
  • Alabama
    • The city of Phenix City uses both UTC−05:00 and UTC−06:00 due to its proximity to Columbus
  • Arkansas
  • Florida
    • The counties of Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and Washington, and northern Gulf county (panhandle)^[4]
  • Illinois
  • Indiana^[5]
    • Northwestern counties of Jasper, Lake, LaPorte, Newton, Porter and Starke
    • Southwestern counties of Gibson, Perry, Posey, Spencer, Vanderburgh and Warrick
  • Iowa
  • Kansas
    • Entire state except Greeley, Hamilton, Sherman and Wallace counties
  • Kentucky
    • The counties of Breckinridge, Grayson, Hart, Green, Adair, Russell and Clinton, and all counties to the west of these^{[4] [6]}
  • Louisiana
  • Michigan^[7]
    • The western counties of Dickinson, Gogebic, Iron and Menominee
  • Minnesota
  • Mississippi
  • Missouri
  • Nebraska
    • Central and eastern Nebraska
  • North Dakota
    • Entire state except southwest
  • Oklahoma
    • Entire state except Kenton
  • South Dakota
    • Eastern half
  • Tennessee
    • Counties to the west of the counties of Scott, Morgan, Roane, Rhea, and Hamilton^{[4] [8]}
  • Texas
    • All except westernmost counties
  • Wisconsin

As daylight saving time (Northern Hemisphere summer)

Principal cities: Calgary, Edmonton, Yellowknife, Denver, Billings, Boise, Salt Lake City, Albuquerque, El Paso, Ciudad Juárez

North America

• Canada (Mountain Time Zone)^[9]
  • Alberta
  • British Columbia^[10]
    • The south-eastern communities of Cranbrook, Golden, Invermere and Kimberley
  • Northwest Territories
  • Nunavut
    • Kitikmeot Region^[11]
  • Saskatchewan
    • Lloydminster
• Mexico (near US border with New Mexico & western Texas)
  • Chihuahua
    • The municipalities of Janos, Ascensión, Juárez, Práxedis G. Guerrero and Guadalupe^[3]
• United States (Mountain Time Zone)^[4]
  • Arizona - Navajo Nation only
  • Colorado
  • Idaho^[12]
    • South of Salmon River
  • Kansas
    • The western counties of Greeley, Hamilton, Sherman and Wallace
  • Montana
  • Nebraska
    • The western counties of Cherry (western part), Hooker, Arthur, Keith, Perkins, Chase and Dundy, and all counties to the west of these
  • Nevada
    • West Wendover
  • New Mexico
  • North Dakota
    • The Southwestern counties of Adams, Billings, Bowman, Dunn (southern part), Golden Valley, Grant, Hettinger, McKenzie (southern part), Sioux (west of ND route 31), Slope and Stark
  • Oklahoma
    • Kenton
  • Oregon
    • Malheur County (except a small strip in the south)
  • South Dakota
    • The western counties of Corson, Dewey, Stanley (western part), Jackson and Bennett, and all counties to the west of these
  • Texas
    • The western counties of Culberson (northwestern part), El Paso and Hudspeth
  • Utah
  • Wyoming

As standard time (year-round)

Principal cities: Regina, Saskatoon, Huntsville, Little Rock, Puebla, Orizaba, Mexico City, Guadalajara, Monterrey, Guatemala City, Tegucigalpa, Managua, Belmopan, Belize City, San José, San Salvador, San Pedro Sula, Liberia.

Central America

• Belize
• Costa Rica
• El Salvador
• Guatemala
• Honduras
• Nicaragua
  • Called Central America Time Zone

North America

• Canada (Central Time Zone)
  • Saskatchewan
    • All province except Lloydminster
• Mexico (Zona Centro)
  • All except Baja California, Baja California Sur, most of Nayarit, Quintana Roo, Sinaloa, Sonora and the northern municipalities of Chihuahua, Coahuila, Nuevo León and Tamaulipas.^[3]
  • A small enclave of the UTC−6 time zone is followed in the municipality of Bahía de Banderas, Nayarit, due to its strong economic ties with the neighboring municipality of Puerto Vallarta, Jalisco. In most UNIX-like operating systems this area is represented as America/Bahia_Banderas.

Oceania

East Pacific

• Ecuador
  • Galápagos Province

As standard time (Southern Hemisphere winter)

Principal settlement: Hanga Roa

Oceania

East Pacific

• Chile
  • Easter Island

See also

• Time in Canada
• Time in Chile
• Time in Ecuador
• Time in Mexico
• Time in the United States

Notes and References

1. Web site: WordNet Search – 3.1. wordnetweb.princeton.edu. 9 July 2017.
2. Web site: Ontario Time Zone – Ontario Current Local Time – Daylight Saving Time. TimeTemperature.com. 1 February 2015.
3. Web site: Hora Oficial en los Estados Unidos Mexicanos. 2 April 2023. Centro Nacional de Metrologîa. es. 21 October 2023.
4. Web site: Time Zones of the United States. Statoids. 25 August 2012.
5. Web site: Time zone map (spring). 13 March 2011. Indiana State. 14 July 2012. 10 May 2012. https://web.archive.org/web/20120510094451/http://www.in.gov/core/files/time_zone_map(spring)11_13_11.pdf. dead.
6. Web site: Kentucky County Map. Kentucky Map Collection. Geology.com. 6 October 2012.
7. Web site: Michigan Time Zone – Michigan Current Local Time – Daylight Saving Time. TimeTemperature.com. 25 August 2012.
8. Web site: Tennessee County Map. Tennessee Map Collection. Geology.com. 6 October 2012.
9. Web site: North American time zones: MST – Mountain Standard Time. Time and Date. 28 September 2012.
10. http://www.timeanddate.com/news/time/fort-nelson-canada-time-zone.html New Time Zone in Fort Nelson
11. Web site: Canada Time Zone Map. WorldTimeZone.com. 9 November 2012.
12. Web site: 15 USC § 264 – Part of Idaho in Fourth Zone. Legal Information Institute. Cornell University Law School. 15 July 2012.