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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 ...
Yes. Central Standard Time ( Phenix City observes Eastern time on a de facto basis) Alaska. UTC−09:00 AKT. Yes. Most of state: UTC−09:00 AKST Alaska Standard Time. UTC−10:00 HT. Aleutian Islands (west of 169°30' W): UTC−10:00 HST Hawaii-Aleutian Standard Time. American Samoa.
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
Hawaii began observing Hawaiian Standard Time on January 13, 1896, at noon. On May 19, 1947, the Hawaii State Legislature approved a bill to change Hawaiian Standard Time to UTC−10:00, which would go into effect on June 8, 1947. After the Uniform Time Act was passed in 1966, Hawaii was placed in the new Alaska–Hawaii Time Zone. On March 30 ...
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 ...
Lahaina Noon. Lāhainā Noon, also known as a zero shadow day, is a semi-annual tropical solar phenomenon when the Sun culminates at the zenith at solar noon, passing directly overhead (above the subsolar point ). [1] As a result, the sun's rays will fall exactly vertical relative to an object on the ground and cast no observable shadow. [2]
In the United States, time is divided into nine standard time zones covering the states, territories and other US possessions, with most of the country 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, but no ...
The scheduling of television programming in North America (namely the United States, Canada, and Mexico) must cope with different time zones. The United States (excluding territories) has six time zones ( Hawaii–Aleutian, Alaska, Pacific, Mountain, Central and Eastern ), with further variation in the observance of daylight saving time.