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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.
[3] [4] On May 19, 1947, the Hawaii Territorial Legislature approved a bill to change Hawaiian Standard Time to UTC−10:00, which would go into effect on June 8, 1947. [5] After the Uniform Time Act was passed in 1966, Hawaii was placed in the new Alaska–Hawaii Time Zone. On March 30, 1967, the Hawaii State Legislature chose to exempt the ...
Standard Time (SDT) and Daylight Saving Time (DST) offsets from UTC in hours and minutes. For zones in which Daylight Saving is not observed, the DST offset shown in this table is a simple duplication of the SDT offset. The UTC offsets are based on the current or upcoming database rules.
Map of U.S. time zones with new CST and EST areas displayed. Some U.S. time zones, such as the Samoa Time Zone, are not on this map. This is a list of the time offsets by U.S. states, federal district, and territories. For more about the time zones of the U.S. see time in the United States. Most states are entirely contained within one time zone.
HST: Hawaii Standard Time UTC−10:00: The minute of standard time does not differ from the minute of daylight saving time (DST; if applicable). HAT or HAST: HADT: Hawaii-Aleutian Standard/Daylight Time UTC−10:00: UTC−09:00: AKT or AKST: AKDT: Alaska Standard/Daylight Time UTC−09:00: UTC−08:00: PT or PST: PDT: Pacific Standard/Daylight ...
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
Just before 3 p.m. Hawaii Standard Time, the USGS declared the eruption paused. ... The first helicopter overflight of Kīlauea's new SW rift zone eruption site at 6 AM HST on June 3, 2024 showed ...
HST: Hawaii Standard Time UTC−10:00: The minute of standard time does not differ from the minute of daylight saving time (DST; if applicable). HAT or HAST: HADT: Hawaii-Aleutian Standard/Daylight Time UTC−10:00: UTC−09:00: AKT or AKST: AKDT: Alaska Standard/Daylight Time UTC−09:00: UTC−08:00: PT or PST: PDT: Pacific Standard/Daylight ...