منطقة توقيت الجبل
| منطقة توقيت الجبل Mountain Time Zone | |
|---|---|
| Time zone | |
 منطقة توقيت الجبل | |
| UTC offset | |
| MST | UTC−07:00 |
| MDT | UTC−06:00 |
| Current time | |
| 03:15, ديسمبر 19, 2024 MST [refresh] | |
| Observance of DST | |
| DST is observed in some of this time zone. | |
منطقة توقيت الجبل أو المنطقة الزمنية الجبلية Mountain Time Zone في أمريكا الشمالية keeps time by subtracting seven hours from Coordinated Universal Time (UTC) when standard time (UTC−07:00) is in effect, and by subtracting six hours during daylight saving time (UTC−06:00). The clock time in this zone is based on the mean solar time at the 105th meridian west of the Greenwich Observatory. In the United States, the exact specification for the location of time zones and the dividing lines between zones is set forth in the Code of Federal Regulations at 49 CFR 71.[أ]
In the United States and Canada, this time zone is generically called Mountain Time (MT). Specifically, it is Mountain Standard Time (MST) when observing standard time, and Mountain Daylight Time (MDT) when observing daylight saving time. The term refers to the Rocky Mountains, which range from British Columbia to New Mexico. In Mexico, this time zone is known as the tiempo de la montaña or zona Pacífico ("Pacific Zone"). In the United States and Canada, the Mountain Time Zone is to the east of the Pacific Time Zone and to the west of the Central Time Zone.
In some areas, starting in 2007, the local time changes from MST to MDT at 2 am MST to 3 am MDT on the second Sunday in March and returns at 2 am MDT to 1 am MST on the first Sunday in November.
Sonora in Mexico and most of Arizona in the United States do not observe daylight saving time (DST), and during the spring, summer, and autumn months they are on the same time as Pacific Daylight Time.[4] The Navajo Nation, most of which lies within Arizona but extends into Utah and New Mexico (which do observe DST), does observe DST, although the Hopi Reservation, as well as some Arizona state offices lying within the Navajo Nation, do not.
The largest city in the Mountain Time Zone is Phoenix, Arizona; the Phoenix metropolitan area is the largest metropolitan area in the zone.
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كندا
One province and two territories are fully contained in the Mountain Time Zone:
- Alberta
- Northwest Territories
- Yukon (no DST)
On September 24, 2020, Yukon switched to the Mountain Standard Time year-round. Therefore, clocks in Yukon and Alberta are the same in the winter, and Alberta is one hour ahead in summer. Previously, the territory had used the Pacific Time Zone with daylight saving time: UTC−8 in winter and UTC−7 in summer.[5]
One province and one territory are split between the Mountain Time Zone and the Pacific Time Zone:
- British Columbia – northeastern and southeastern regions
- Northwest Territories – Tungsten
One territory and one province are split between the Mountain Time Zone and the Central Time Zone:
- Nunavut: Kitikmeot Region
- Saskatchewan: Lloydminster and vicinity
المكسيك
The following states have the same time as Mountain Time Zone:
- Baja California Sur
- Nayarit: except for the Bahía de Banderas municipality, which uses the Central Time Zone.
- Sonora: no daylight saving time, always on MST.
- Sinaloa
- Revillagigedo Islands (Colima): three of the four islands have the same time as Mountain Time Zone: Socorro Island, San Benedicto Island and Roca Partida.
الولايات المتحدة
Six states are fully contained in the Mountain Time Zone:
- Colorado
- Montana
- New Mexico
- Utah
- Wyoming
- Arizona (does not use daylight saving time except for Navajo Nation)
Three states are split between the Mountain Time Zone and the Pacific Time Zone. The following locations observe Mountain Time:
- Idaho: Southern Idaho
- Oregon: the majority of Malheur County
- Nevada: West Wendover
Five states are split between the Mountain Time Zone and the Central Time Zone. The following locations observe Mountain Time:
- Kansas: Sherman, Wallace, Greeley and Hamilton Counties
- Nebraska: western one third
- North Dakota: the southwest corner counties (Adams, Billings, Bowman, Golden Valley, Grant, Hettinger, Slope, Stark) observe MST. The counties of McKenzie, Dunn, and Sioux are split.
- South Dakota: western half
- Texas: El Paso, Hudspeth, and northwestern Culberson Counties
المناطق العمرانية الرئيسية
Alphabetical list of major cities located within the Mountain Time Zone:
- ألبوكركي، نيو مكسيكو
- Boise, Idaho
- Boulder, Colorado
- Billings, Montana
- Calgary, Alberta
- Cheyenne, Wyoming
- Chihuahua, Chihuahua
- Ciudad Juárez, Chihuahua
- Ciudad Obregón, Sonora
- Colorado Springs, Colorado
- Culiacán, Sinaloa
- Metropolitan Denver
- إدمونتون، ألبرتا
- El Paso, Texas
- Flagstaff, Arizona
- Fort Collins, Colorado
- Greeley, Colorado
- Hermosillo, Sonora
- La Paz, Baja California Sur
- Lake Havasu City, Arizona
- Lethbridge, Alberta
- Los Mochis, Sinaloa
- Mazatlán, سينالوا
- ميزولا، مونتانا
- Nogales, Sonora
- Metropolitan Phoenix
- Provo, Utah
- Pueblo, Colorado
- Rapid City, South Dakota
- Red Deer, Alberta
- Salt Lake City, Utah
- San Luis Río Colorado, Sonora
- Tepic، ناياريت
- توسن، أريزونا
- West Jordan, Utah
- West Valley City, Utah
- Yuma, Arizona
See also
Notes
References
- ^ "49 CFR 71.8 Mountain zone". Code of Federal Regulations. Retrieved October 7, 2011.
- ^ "49 CFR 71.7 Boundary line between central and mountain zones". Code of Federal Regulations. Retrieved October 7, 2011.
- ^ "49 CFR 71.9 Boundary line between mountain and Pacific zones". Code of Federal Regulations. Retrieved October 7, 2011.
- ^ Robbins, Ted (March 11, 2007). "Arizona Says No to Daylight-Saving Time". Weekend Edition Sunday. National Public Radio. Retrieved June 18, 2012.
- ^ "HOME - Yukon Legislation". Yukon Legislation. Retrieved February 16, 2022.
External links
- World time zone map Archived ديسمبر 24, 2015 at the Wayback Machine
- U.S. time zone map Archived فبراير 15, 2009 at the Wayback Machine
- History of U.S. time zones and UTC conversion Archived أغسطس 8, 2011 at the Wayback Machine
- Canada time zone map
- Time zones for major world cities
- Official times across Canada
- Official times across Mexico
- Canada time map
- U.S. time map