Time in the captivate together States Time in the United States, by justness, is divided into nine well-worn prison term zones top the states and its possessions, with most of the United States observing daylight scrimping eon for part of the year. The period zone boundaries and DST observance be at a lower place the federal action of the Department of Transportation. Official and highly precise succession retentiveness service ( measures) are provided by two federal snip agencies: a Department of Commerce agency, the National Institute of beatiseds and applied science (NIST), and its armed forces counterpart, the United States Naval Observatory (USNO). The clocks unfreeze by these services are kept synchronized with individually another(prenominal) as well as with those of international magazine retentiveness organizations. It is the combination of the time zone and daylight saving rules on with the time keeping services which determines the legal civ il time for any U.S. location at any moment. United States time zones metre time zones in the United States are right away defined at the federal level by rectitude 15 U.S.C. Â§260. The federal law also establishes the transition dates and clock at which daylight saving time occurs, if observed.
It is ultimately the office of the Secretary of Transportation, in coordination with the states, to determine which regions will observe which of the standard time zones and if they will observe daylight saving time. As of August 9, 2007, the standard time zones are defined in terms of hourly offsets from UTC. Prior to this they were based upon the mean ! solar time at several meridians 15Â° apart due westward of Greenwich (GMT). Only the full time zone name calling listed below are official; abbreviations are by normal role conventions. The United States uses nine standard time zones. From eastbound to west they are Atlantic criterion Time (AST), east Standard Time (EST), Central Standard Time (CST), mass Standard Time (MST), Pacific Standard Time (PST), Alaskan Standard Time (AKST), Hawaii-Aleutian Standard Time (HST),...If you want to get a full essay, order it on our website: OrderCustomPaper.com
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