Australia has five time zones, which, depending on the part of the country, are not even separated hourly and do not all have a daylight saving time. In Brazil, for example, there are three different time zones within the country, while there are six in the USA and Russia has eleven. This cannot be achieved in large countries, either. For example, there is Spain (actually in the UTC0 time zone), which orients to its neighbours and accepts other time zones for political and economic reasons rather than using the position of the sun. Numerous countries therefore opt for a uniform time zone within its own borders. The western parts of Mexico are actually in the UTC-7 time zone, but UTC-6 applies to the whole country. Of course, this purely theoretical structure cannot be combined with national borders. Thus, in each of these optimized sections, the time is aligned optimally to the position of the sun, based on where the sun is highest at noon everywhere The zero longitude is the UTC0 time zone, while the 15th longitude is the UTC+1 time zone. Each of these sections is 15 degrees of longitude wide and marks one hour. Time zone allocation Since a day has 24 hours, the globe was divided into 24 equal theoretical parts, each extending from the North Pole to the South Pole. West Samoa TimeIn summer: West Samoa Daylight Time (WSDT) Norfolk TimeIn summer: Norfolk Daylight Time (NFDT)Īmerican Samoa, United States Minor Outlying Islands
New Zealand Standard TimeIn summer: New Zealand Daylight Time (NZDT) Israel Standard TimeIn summer: Israel Daylight Time (IDT)Ĭhatham Island Standard TimeIn summer: Chatham Island Daylight Time (CHADT)Įaster Island Standard TimeIn summer: Easter Island Summer Time (EASST)įiji TimeIn summer: Fiji Daylight Time (FJDT) West Greenland TimeIn summer: Western Greenland Summer Time (WGST)īahrain, Iraq, Kuwait, Qatar, Saudi Arabia, Yemen Pierre & Miquelon Standard TimeIn summer: Pierre & Miquelon Daylight Time (PMDT) Paraguay TimeIn summer: Paraguay Summer Time (PYST)
Pacific Standard TimeIn summer: Pacific Daylight Time (PDT) Newfoundland Standard TimeIn summer: Newfoundland Daylight Time (NDT) Mountain Standard TimeIn summer: Mountain Daylight Time (MDT) Hawaii Standard TimeIn summer: Hawaii Daylight Time (HDT) Alaska Standard TimeIn summer: Alaska Daylight Time (AKDT)Īmazon TimeIn summer: Amazon Summer Time (AMST)Ītlantic Standard TimeIn summer: Atlantic Daylight Time (ADT)Īnguilla, Antigua and Barbuda, Aruba, Barbados, Bermuda, British Virgin Islands, Canada, Caribbean Netherlands, Curacao, Dominica, Dominican Republic, Greenland, Grenada, Guadeloupe, Martinique, Montserrat, Puerto Rico, Saint Barthelemy, Saint Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Virgin Islandsīrasilia TimeIn summer: Brasília Summer Time (BRST)Ĭentral Standard TimeIn summer: Central Daylight Time (CDT)īelize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States of AmericaĬhile TimeIn summer: Chile Summer Time (CLST)Ĭuba Standard TimeIn summer: Cuba Daylight Time (CDT)Įast Greenland TimeIn summer: Eastern Greenland Summer Time (EGST)Įastern Standard TimeIn summer: Eastern Daylight Time (EDT)īahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States of America
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