Time Zone

Running head: World set Scale Time Z one and only(a) Theresa Hinton University of Phoenix January 21, 2012 Introduction some cities close to the world historically kept their own clip by using some type of instrument to superintend the suns high point at noon.  The soonest quantify measuring devices used either the suns fill in or the rate in which water runs egress of a vessel. The pendulum clock was developed during the 17th century these quantify were sufficiently accurate to be used at ocean to discover longitude and for scientific cartridge holder measurement in the eighteenth century. (timeanddate,2010) chronicle of Time Zone A criterion time geographic regularise generally refers to any of the 24 regions of the earths surface, shared by longitude, in which standard time is kept. Ho wever, the issue forth of standard time zones is questionable and discussed among various sources, particularly with discover to the world(prenominal) Date Line. (NIST,2010) The Greenwich Meridian, divide the main separation of time zones.

individually time zone is 15 degrees of longitude in width, with local differences, and views a clock time one hour earlier than the zone immediately to the east. (NIST,2010) Time zones can be determined by how countries and states borders are positioned. Individual zone boundaries are not material because they are adjusted for the convenience and wishes of loc al populations. Furthermore, some geographic! ally large countries, such as India and China, use only one time zone but other large countries, such as Russia and the United States, have more than one time zone.  The United States uses nine standard time zones. From east to watt they are Atlantic cadence Time (AST), Eastern govern Time (EST), Central timeworn Time (CST), Mountain example Time (MST), Pacific bill Time (PST), Alaskan Standard Time (AKST), Hawaii-Aleutian Standard Time (HST), Samoa standard time (UTC-11) and...If you call for to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper