Greenwich Mean Time

From Conservapedia
(Redirected from Time zones)
Jump to: navigation, search

Greenwich Mean Time, or GMT, is the global time standard that is the mean solar time anywhere along the Greenwich Meridian. Because noon (the time when the sun is the highest overhead) does not occur at exactly the same point in every twenty-four day during the course of the year, we use the average ("mean") of each apparent noon as a standard that is called mean solar time. [1] The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) marks the starting point of every time zone in the World. Physically, it is marked by a brass bar and accompanying symbol in the forecourt of the Museum which replaced the original Royal Observatory at Greenwich in southeast London.

The meeting of the hemispheres - East is right, West is left.

For every 15˚ change in longitude away from the Prime Meridian, there is one hours' difference in local time, compared to that at Greenwich. Towards the east of Greenwich, the local time will be ahead of GMT, whilst to the west, local time will lag GMT. This has not only resulted in the world being divided into 24 time zones but also large landmasses and individual countries being divided into several time zones.

Although GMT has been replaced by atomic time (Coordinated Universal Time or UTC) it is still widely regarded as the correct time for every international time zone.

Allowance also must be made for Daylight Saving Time, or Summer Time Zones, where applicable, which include an offset of an extra hour.

The International Date Line is an imaginary line running approximately between time GMT+12 and GMT-12, that separates two consecutive calendar days. The date in the Eastern hemisphere, to the left of the line - time zone M (Mike)- is always one day ahead of the date in the Western hemisphere, to the right of the International Date Line - time zone Y (Yankee).

It has been recognized as a matter of convenience and has no force in international law.

Time Zones

Map displaying the world's time zones

The following is an alphabetical list of countries, per time zone [2]

GMT - 12

  • Baker Island
  • Howland Island

Back to Top

GMT - 11

  • American Samoa
  • Jarvis Island
  • Kingman Reef
  • Midway Islands
  • Niue
  • Palmyra Atoll
  • Samoa

Back to Top

GMT - 10

  • Cook Islands
  • French Polynesia
  • Johnston Atoll
  • Tokelau, New Zealand
  • United States (Hawaii)
  • United States (Aleutian Islands)

Back to Top

GMT - 9

  • French Polynesia
  • United States (Alaska)

Back to Top

GMT - 8

  • Canada (British Columbia, Vancouver, Yukon, Whitehorse)
  • Mexico (Baja California, Tijuana, Ensenada, Mexicali)
  • Pitcairn
  • United States (California, Nevada, Oregon, Washington, Idaho)

Back to Top

GMT - 7

  • Canada (Alberta, Northwest Territories)
  • Mexico (Baja California Sur, Chihuahua, Nayarit, Sinaloa)
  • United States (Arizona, Colorado, Idaho, Montana, Nebraska, New Mexico, N Dakota, Oregon, S Dakota, Utah, Wyoming)

Back to Top

GMT - 6

  • Belize
  • Canada (Manitoba, Saskatchewan)
  • Easter Island, Chile
  • Costa Rica
  • Galapagos Islands, Ecuador
  • El Salvador
  • Guatemala
  • Honduras
  • Mexico (Mexico City, Acapulco, Monterrey, Veracruz, Guadalajara, Cancun)
  • Nicaragua
  • United States, Alabama, Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Mississippi, Missouri, Nebraska (Eastern), Oklahoma, Tennessee, Texas, Wisconsin

Back to Top

GMT - 5

  • Bahamas
  • Brazil (Acre-Rio Branco)
  • Canada (Quebec, Ontario, Nunavut)
  • Cayman Islands
  • Colombia
  • Cuba
  • Ecuador
  • Haiti
  • Jamaica
  • Navassa Island
  • Panama
  • Peru
  • Turks And Caicos Islands
  • United States (New York, District Of Columbia, Florida, Massachusetts, Georgia, Michigan, Connecticut, Delaware, Indiana, Kentucky (Eastern And Central), Maine, Maryland, New Hampshire, New Jersey, N Carolina, Ohio, Pennsylvania, Rhode Island, S Carolina, Tennessee (Eastern), Vermont, Virginia, W Virginia)

Back to Top

GMT - 4

  • Anguilla
  • Antigua And Barbuda
  • Aruba
  • Barbados
  • Bermuda
  • Bolivia
  • Brazil (Manaus)
  • Canada (New Brunswick, Nova Scotia, Prince Edward Island)
  • Chile
  • Dominica
  • Dominican Republic
  • Falkland Islands
  • Greenland
  • Grenada
  • Guadeloupe
  • Guyana
  • Martinique
  • Montserrat
  • Netherlands Antilles
  • Paraguay
  • Puerto Rico
  • Saint Kitts And Nevis
  • Saint Lucia
  • Saint Vincent And The Grenadines
  • Trinidad And Tobago
  • Virgin Islands
  • British Virgin Islands
  • Antarctica (O'Higgins Station, Palmer Station)

Back to Top

GMT - 3

  • Argentina
  • Brazil (Rio de Janeiro, São Paulo, Brasilia, Recife, Maceio, Salvador, Fortaleza)
  • French Guiana
  • Greenland (Nuuk)
  • Saint Pierre And Miquelon
  • Suriname
  • Uruguay

Back to Top

GMT - 2

  • Brazil (Fernando De Noronha)
  • South Georgia And South Sandwich Islands

Back to Top

GMT - 1

  • Cape Verde
  • Greenland (East)
  • Portugal (Azores)

Back to Top

GMT

  • Burkina Faso
  • Canary Islands
  • Côte d'Ivoire
  • Faroe Islands
  • The Gambia
  • Ghana
  • Guinea
  • Guinea-Bissau
  • Iceland
  • Ireland
  • Liberia
  • Mali
  • Mauritania
  • Morocco
  • Portugal
  • Saint Helena
  • Sao Tome And Principe
  • Senegal
  • Sierra Leone
  • Togo
  • United Kingdom
  • Western Sahara

Back to Top

GMT + 1

  • Albania
  • Andorra
  • Algeria
  • Angola
  • Austria
  • Belgium
  • Benin
  • Bosnia-Herzegovina
  • Cameroon
  • Central African Republic
  • Chad
  • Congo, Republic Of The
  • Congo, Democratic Republic Of The (Kinshasha)
  • Croatia
  • Czech Republic
  • Denmark
  • Equatorial Guinea
  • Macedonia
  • France
  • Gabon
  • Germany
  • Gibraltar
  • Hungary
  • Italy
  • Liechtenstein
  • Luxembourg
  • Malta
  • Monaco
  • Namibia
  • Netherlands
  • Niger
  • Nigeria
  • Norway
  • Poland
  • San Marino
  • Serbia And Montenegro
  • Slovakia
  • Slovenia
  • Spain
  • Sweden
  • Switzerland
  • Tunisia
  • Vatican

Back to Top

GMT + 2

  • Belarus
  • Botswana
  • Bulgaria
  • Burundi
  • Congo, Democratic Republic Of The (Lubumbashi)
  • Cyprus
  • Egypt
  • Estonia
  • Finland
  • Gaza Strip
  • Greece
  • Israel
  • Jordan
  • Latvia
  • Lebanon
  • Lesotho
  • Libya
  • Lithuania
  • Malawi
  • Moldova
  • Mozambique
  • Romania
  • Russia (Zone 1)
  • Rwanda
  • South Africa
  • Swaziland
  • Syria
  • Turkey
  • Ukraine
  • West Bank
  • Zambia
  • Zimbabwe

Back to Top

GMT + 3

  • Bahrain
  • Comoros
  • Djibouti
  • Ethiopia
  • Eritrea
  • Iraq
  • Kenya
  • Kuwait
  • Madagascar
  • Qatar
  • Russia (Zone 2)
  • Saudi Arabia
  • Somalia
  • Sudan
  • Tanzania
  • Uganda
  • Yemen

Back to Top

GMT + 4

  • Armenia
  • Azerbaijan
  • Georgia
  • Mauritius
  • Oman
  • Reunion
  • Russia (Zone 3)
  • Seychelles
  • United Arab Emirates

Back to Top

GMT + 5

  • Kazakhstan
  • Maldives
  • Pakistan
  • Russia (Zone 4)
  • Tajikistan
  • Turkmenistan
  • Uzbekistan

Back to Top

GMT + 6

  • Bangladesh
  • Bhutan
  • British Indian Ocean Territory
  • Kazakhstan
  • Kyrgyzstan
  • Russia (Zone 5)

Back to Top

GMT + 7

  • Cambodia
  • Christmas Island, Australia
  • Indonesia
  • Laos
  • Russia (Zone 6)
  • Thailand
  • Vietnam

Back to Top

GMT + 8

  • Australia (Western Aus)
  • Brunei Darussalam
  • China
  • Hong Kong
  • Indonesia (Western)
  • Macau
  • Malaysia
  • Mongolia
  • Philippines
  • Russia (Zone 7)
  • Singapore
  • Taiwan

Back to Top

GMT + 9

  • East Timor
  • Indonesia (Eastern)
  • Japan
  • Korea, North
  • Korea, Republic Of
  • Palau
  • Russia (Zone 8)

Back to Top

GMT + 10

  • Australia (ACT, New South Wales, Victoria, Queesland, Tasmania)
  • Guam
  • Micronesia, Federated States Of
  • Northern Mariana Islands
  • Papua New Guinea
  • Russia (Zone 9)

Back to Top

GMT + 11

  • New Caledonia
  • Russia (Zone 10)
  • Solomon Islands
  • Vanuatu

Back to Top

GMT + 12

  • Fiji
  • Kiribati
  • Marshall Islands
  • Nauru
  • New Zealand
  • Russia (Zone 11)
  • Tuvalu
  • Wake Island
  • Wallis And Futuna
  • Antarctica (Amundsen-Scott - Pole, Mcmurdo Station, Scott Station)

Back to Top

External links

References