Pacific Time Zone
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|Pacific Time Zone|
Pacific Time Zone
|Observance of DST|
|DST is observed throughout this time zone between the 2nd Sunday in March and the 1st Sunday in November.|
|DST began||Mar 12, 2017|
|DST ends||Nov 5, 2017|
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTC−8). During daylight saving time, its time offset is UTC−7 and is thus based on the mean solar time of the 105th meridian west of the Greenwich Observatory.
In the United States and Canada, this time zone is generically called the Pacific Time Zone (PT). Specifically, it uses Pacific Standard Time (PST) when observing standard time (late autumn to early spring), and Pacific Daylight Time (PDT) when observing daylight saving time (early spring to late autumn). Most of Canada uses daylight saving time. In Mexico, the UTC−8 time zone is known as the Northwest Time Zone, which is synchronized with the U.S. PDT daylight saving schedule.
The zone is two hours ahead of the Hawaii–Aleutian Time Zone, one hour ahead of the Alaska Time Zone, one hour behind the Mountain Time Zone, two hours behind the Central Time Zone, and three hours behind the Eastern Time Zone.
The following U.S. states or areas are part of the Pacific Time Zone:
- Alaska – The town of Hyder on the British Columbia border observes Pacific Time due to strong connections with Stewart, British Columbia. The United States Post Office in Hyder strictly observes Alaska Time.
- California - all
- Idaho – The Idaho Panhandle containing nine northern counties and the majority of Idaho County. The portions of Idaho County south and west of the Salmon River are in the Mountain Time Zone along with the rest of the state.
- Nevada – West Wendover on the Utah border is in the Mountain Time Zone due to strong economic ties with Utah. The Idaho border towns of Jackpot, Mountain City, Owyhee, and Jarbidge observe Mountain Time as well, but unofficially.
- Oregon – Pacific Time contains the entire state with the exception of the northern 80% of Malheur County which observes Mountain Time due to close proximity with Idaho. The southern 20% of Malheur County observes Pacific Time with the rest of the state. The two other Idaho bordering counties: Baker and Wallowa are contained in the Pacific Time Zone as well.
- Washington - all
In Canada, the Pacific Time Zone includes:
- British Columbia: most of the province (except for the Highway 95 corridor and portions around Tumbler Ridge, Fort St. John, Dawson Creek, Golden and Creston).
- Yukon: the entire territory.
- Northwest Territories: just the townsite of Tungsten.
In Mexico, the Pacific Time Zone includes:
Through 2006, the local time (PST, UTC−8) changed to daylight time (PDT, UTC−7) at 02:00 LST (local standard time) to 03:00 LDT (local daylight time) on the first Sunday in April, and returned at 02:00 LDT to 01:00 LST on the last Sunday in October.
Effective in the U.S. in 2007 as a result of the Energy Policy Act of 2005, the local time changes from PST to PDT at 02:00 LST to 03:00 LDT on the second Sunday in March and the time returns at 02:00 LDT to 01:00 LST on the first Sunday in November. The Canadian provinces and territories that use daylight time each adopted these dates between October 2005 and February 2007. In Mexico, beginning in 2010, the portion of the country in this time zone uses the extended dates, as do some other parts. The vast majority of Mexico, however, still uses the old dates.
- The Official NIST US Time
- Official times across Canada
- World time zone map
- U.S. time zone map
- History of U.S. time zones and UTC conversion
- Canada time zone map
- Time zones for major world cities
Time zones in North America
|Time zone||Hours from UTC: Standard time||Hours from UTC: Daylight saving time|
|Hawaii–Aleutian (in Hawaii)||–10||–10|
|Hawaii–Aleutian (in Alaska)||–10||–9|
|Mountain (Arizona and Sonora only)||–7||–7|
|Mountain (other states)||–7||–6|
|Central (Saskatchewan only)||–6||–6|
|Central (other states)||–6||–5|
|Eastern (Southampton Island,Atikokan and New Osnaburgh/Pickle Lakeonly)||–5||–5|
|Eastern (other states)||–5||–4|
|Atlantic (Natashquan River)||–4||–4|
|Atlantic (other states)||–4||–3|
|Saint Pierre and Miquelon
and most of Greenland