Hawaii–Aleutian Time Zone

The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST),[1][2] by subtracting ten hours from Coordinated Universal Time (UTC−10:00). The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory.

The zone takes its name from the two areas it includes: Hawaii and the portion of Alaska's Aleutian Islands west of 169° 30′ W longitude.

During daylight saving time (DST), the Alaskan portion observes Hawaii–Aleutian Daylight Time (HDT, UTC−09:00), while Hawaii stays on standard time.

From 1900 until 1947, UTC−10:30 was used as standard time in Hawaii.[3]

French Polynesia uses UTC−10:00 for its major cities. The Cook Islands also use the same time. These areas do not use DST. "Hawaii–Aleutian Time Zone" is a U.S. term and for that reason the Polynesian areas are not considered to be a part of the Hawaii–Aleutian Time Zone.

Hawaii–Aleutian Time Zone
UTC offset
Current time
14:24, 21 October 2019 HAST [refresh]
15:24, 21 October 2019 HADT [refresh]
Observance of DST
DST is observed in some of this time zone.

Major metropolitan areas

Other significant places

See also


  1. ^ "U.S. Government Printing Office Style Manual: An official guide to the form and style of Federal Government printing" (PDF). U.S. Government Printing Office. 2008. p. 234. Retrieved 2017-07-24. Time zones §9.47. The following forms are to be used when abbreviating names of time zones: ... HDT—Hawaii-Aleutian daylight time (not observed in HI) ... HST—Hawaii-Aleutian standard time
  2. ^ "What are the time zones in the United States?". National Institute of Standards and Technology, U.S. Department of Commerce. 2016. Retrieved 2017-07-24. Hawaii-Aleutian (HT); HST -10; HDT -9; DST observed in Aleutian Islands, but not Hawaii
  3. ^ "Sources for Time Zone and Daylight Saving Time Data". Retrieved 2012-06-18.

External links

150th meridian west

The meridian 150° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America (entirely within the State of Alaska), the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

In Antarctica, the meridian defines the eastern limit of New Zealand's territorial claim. The land further east is not claimed by any nation.

The 150th meridian west forms a great circle with the 30th meridian east.

The Hawaii-Aleutian Time Zone is based on the mean solar time of this meridian.

2001 Hawaii Warriors football team

The 2001 Hawaii Warriors football team represented the University of Hawaii at Manoa in the 2001 NCAA Division I-A football season. Hawaii finished the 2001 season with a 9–3 record, going 5–3 in Western Athletic Conference (WAC) play.

2004 Hawaii Warriors football team

The 2004 Hawaii Warriors football team represented the University of Hawaii at Manoa in the 2004 NCAA Division I-A football season. Hawaii finished the 2004 season with an 8–5 record, going 4–4 in Western Athletic Conference (WAC) play. The Warriors made their third straight appearance in the Hawaii Bowl, facing off against the UAB Blazers. The Warriors would go on to defeat the Blazers and cap off their third straight winning season, the fifth in six seasons under head coach June Jones.

In his final season, quarterback Timmy Chang set the NCAA Division I-A all-time passing yards record with 17,072, surpassing the old mark held by BYU quarterback Ty Detmer (15,031). Chang also set records for total offensive yards (17,183), most offensive plays (2,610), and most interceptions (77). Wide receiver Chad Owens won the Mosi Tatupu Award for the best special teams player in the country and would earn second team AP All-American honors as an all purpose player.

Aleutian Islands

The Aleutian Islands (; Russian: Алеутские острова; Aleut: Tanam Unangaa, literally "Land of the Aleuts", possibly from Chukchi aliat, "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a chain of 14 large volcanic islands and 55 smaller ones belonging to both the U.S. state of Alaska and the Russian federal subject of Kamchatka Krai. They form part of the Aleutian Arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666 km2) and extending about 1,200 mi (1,900 km) westward from the Alaska Peninsula toward the Kamchatka Peninsula in Russia, and mark a dividing line between the Bering Sea to the north and the Pacific Ocean to the south. Crossing longitude 180°, at which point east and west longitude end, the archipelago contains both the westernmost part of the United States by longitude (Amatignak Island) and the easternmost by longitude (Semisopochnoi Island). The westernmost U.S. island in real terms, however, is Attu Island, west of which runs the International Date Line. While nearly all the archipelago is part of Alaska and is usually considered as being in the "Alaskan Bush", at the extreme western end, the small, geologically related Commander Islands belong to Russia.

The islands, with their 57 volcanoes, form the northernmost part of the Pacific Ring of Fire. Physiographically, they are a distinct section of the larger Pacific Border province, which in turn is part of the larger Pacific Mountain System physiographic division.

These Islands are most known for the battles and skirmishes that occurred there during the Aleutian Islands Campaign of World War II. The Japanese landings and occupations of Kiska and Attu in June 1942 were the only two invasions of the United States during that war.

Chamorro Time Zone

The Chamorro Time Zone, formerly the Guam Time Zone, is a United States time zone which observes standard time ten hours ahead of Coordinated Universal Time (UTC+10:00). The clock time in this zone is based on the mean solar time of the 150th meridian east of the Greenwich Observatory.

The zone includes the U.S. territories of Guam and the Northern Mariana Islands, where the Chamorro people are the original inhabitants. Since Daylight Saving Time (DST) is not observed anywhere in this zone, the time is always known as Chamorro Standard Time (ChST).

The zone is two hours behind Wake Island Time Zone and 15 hours ahead of North American Eastern Time Zone.

Chamorro Standard Time shares the same time as Australian Eastern Standard Time.

Children's programming on the American Broadcasting Company

For most of the network's existence until 2011, in regard to children's programming, the American Broadcasting Company (ABC) has aired mostly programming from Walt Disney Television or other producers (most notably, Hanna-Barbera Productions and DIC Entertainment). This article outlines the history of children's television programming on ABC including the various blocks and notable programs that have aired throughout the television network's history.

Daylight saving time in Oceania

Parts of Australia, New Zealand, Fiji and Samoa are areas of Oceania that currently observe daylight saving time (DST).

Kalaeloa, Hawaii

Kalaeloa is a census-designated place (CDP) in Honolulu County, Hawaii, United States. The population was 48 at the 2010 census. The community occupies the location of the former Naval Air Station Barbers Point, which was closed in 1999 and subsequently transferred to the State of Hawaiʻi. The geographical name, Ka lae loa, means "long point" in Hawaiian and is the native name for what is now called Barbers Point on Oʻahu. The area was known as Barbers Point because Captain Henry Barber wrecked his ship on a coral shoal at this location on October 31, 1796.

In 1993, after the federal government listed Barbers Point for closure, the state legislature established the Barbers Point Naval Air Station Redevelopment Commission (BPNAS-RC) to guide the redevelopment of the former military facilities comprising John Rodgers airfield and 3,700 acres (15 km2) of land along the south shore of Oʻahu between the towns of ʻEwa, Kapolei, and Campbell Industrial Park. On July 1, 2002, the Hawaii Community Development Authority became the redevelopment authority for Kalaeloa. The former Naval Air Station runways and associated facilities are now Kalaeloa Airport.

Barbers Point Housing is that part of Kalaeloa retained temporarily by the U.S. Navy for housing.

Neil Everett

Neil Everett (born c. 1962 as Neil Everett Morfitt) is a sportscaster for ESPN. He is the co-anchor of the West Coast edition of SportsCenter alongside Stan Verrett.


NickMom was a late evening programming block that was aired on the channel space of the American preschool-oriented cable channel Nick Jr.. The brand debuted online in November 2011, ahead of its television launch in October 2012. The block carried commercial-supported comedy programming targeting an adult female demographic, particularly mothers, from 10:00 p.m ET nightly.

The launch of NickMom initially generated controversy; as Nick Jr. only operated a single feed out of the Eastern Time Zone, the normally child-oriented network would transition into content inappropriate for such audiences in the early evening or afternoon depending on time zones. On launch, viewership of the block was significantly lower than that of the children's programming it replaced, and other 24-hour preschool networks such as Disney Junior, Sprout and BabyFirstTV took advantage of the gap in programming to build their own audiences.

NickMom was discontinued in September 2015 due to acquired programming cutbacks by Viacom and poor ratings.

Nikolski, Alaska

Nikolski (Russian: Никольский, Chalukax̂ in Aleut) is a census-designated place (CDP) on Umnak Island in Aleutians West Census Area, Alaska, United States. The population was 18 at the 2010 census, down from 39 in 2000.

Pacific Time Zone

The Pacific Time Zone (PT) is a time zone encompassing parts of western Canada, the western United States, and western Mexico. Places in this zone observe standard time by subtracting eight hours from Coordinated Universal Time (UTC−08:00). During daylight saving time, a time offset of UTC−07:00 is used.

In the United States and Canada, this time zone is generically called the "Pacific Time Zone". Specifically, time in this zone is referred to as "Pacific Standard Time" (PST) when standard time is being observed (early November to mid-March), and "Pacific Daylight Time" (PDT) when daylight saving time (mid-March to early November) is being observed. In Mexico, the corresponding time zone is known as the Zona Noroeste (Northwest Zone) and observes the same daylight saving schedule as the U.S. and Canada.

The largest city in the Pacific Time Zone is Los Angeles; the Los Angeles metropolitan area is the largest metropolitan area in the zone.

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, three hours behind the Eastern Time Zone, and four hours behind the Atlantic Time Zone.

Samoa Time Zone

The Samoa Time Zone or Samoa Standard Time (SST) observes standard time by subtracting eleven hours from Coordinated Universal Time (UTC-11:00). The clock time in this zone is based on the mean solar time of the 165th meridian west of the Greenwich Observatory.

The zone includes the U.S. territory of American Samoa, as well as the Midway Islands and the uninhabited islands of Jarvis, Palmyra, and Kingman Reef. It also includes the country of Niue.

The zone is one hour behind Hawaii-Aleutian Time Zone and one hour ahead of the Howland and Baker islands, and 23 hours behind Wake Island Time Zone.

The nation of Samoa also observed the same time as the Samoa Time Zone until it moved across the International Date Line at the end of 29 December 2011; it is now 24 hours (25 hours in southern hemisphere summer) ahead of American Samoa.

Time in Alaska

Alaska is covered by two time zones, as described below:

Islands west of -169.5° (169°30'W) are in the Hawaii–Aleutian Time Zone (UTC−10:00, DST UTC−09:00). Daylight saving time (DST) is observed.

The town of Hyder, because it essentially is a single town split by the US-Canada border with roads only to Canada, unofficially observes Pacific Time including DST (UTC−08:00, DST UTC−07:00) like its neighbor Stewart, British Columbia, with the exception of the U.S. Post Office (because it is a federal facility).

The rest of the state is in the Alaska Time Zone and observes DST (UTC−09:00, DST UTC−08:00).

Time in Hawaii

Hawaii is located in the Hawaii–Aleutian Time Zone and does not observe daylight saving time.

Time in the United States

Time in the United States, by law, is divided into nine standard time zones covering the states, territories and other US possessions, with most of the United States observing daylight saving time (DST) for approximately the spring, summer, and fall months. The time zone boundaries and DST observance are regulated by the Department of Transportation. Official and highly precise timekeeping services (clocks) are provided by two federal agencies: the National Institute of Standards and Technology (NIST) (an agency of the Department of Commerce); and the United States Naval Observatory (USNO). The clocks run by these services are kept synchronized with each other as well as with those of other international timekeeping organizations.

It is the combination of the time zone and daylight saving rules, along with the timekeeping services, which determines the legal civil time for any U.S. location at any moment.

Wake Island Time Zone

The Wake Island Time Zone observes standard time by adding twelve hours to Coordinated Universal Time (UTC+12:00). The clock time in this zone is based on the mean solar time of the 180th degree meridian east of the Greenwich Observatory.

The zone includes the U.S. territory of Wake Island and is two hours ahead of Chamorro Time Zone, 17 hours ahead of North American Eastern Time Zone, 23 hours ahead of Samoa Time Zone, and 24 hours ahead of Howland and Baker Islands.

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
Alaska –9 –8
Pacific (in Alaska) –8 –8
Pacific (other states/provinces) –8 –7
Mountain (Arizona, Sonora, and Northeastern British Columbia only) –7 –7
Mountain (other states/provinces) –7 –6
Central (Saskatchewan only) –6 –6
Central (other states/provinces) –6 –5
Eastern (parts of Nunavut and the Caribbean) –5 –5
Eastern (other states/provinces) –5 –4
Atlantic (Natashquan River) –4 –4
Atlantic (other states/provinces) –4 –3
Newfoundland –3:30 –2:30
Saint Pierre and Miquelon
and most of Greenland
–3 –2
See also
Time in Canada
Time in Denmark
Time in Mexico
Time in the United States


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