Calculate the number of years, days, hours, and seconds between two dates and times. Or use the current date and time and change the time zone to find the hour difference between two time zones. It’s all available in one simple interface. Enjoy!
Let me pre-empt some confusion by explaining that each year is about 365.25 days (thus the need for leap years), so each year in this calculator will be summed as one year and 6 hours.
While making this, I found the following resources extremely helpful:
- WorldTimeZone’s Time Zone Map
- WikiMedia’s World Map of Time Zones
- WorldTimeZone’s Daylight Savings Time 2011 Page
- tz database
- ISO 3166
- timeanddate.com
- Wikipedia – List of Time Zones by Country
- Numerous other Wikipedia entries and local sites for specific countries and territories
Some text here
and here
and here
Aaland Islands
Afghanistan
Albania
Algeria
Andorra
Angola
Anguilla
Antarctica
Argentina
Armenia
Aruba
Australia
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bosnia & Herzegovina
Botswana
Brazil
British Indian Ocean Territory
Brunei
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Canada
Cayman Islands
Central African Rep.
Chad
Chile
China
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo (Dem. Rep.)
Congo (Rep.)
Cook Islands
Costa Rica
Cote d’Ivoire
Croatia
Cuba
Cyprus
Czech Republic
Denmark
Djibouti
Dominica
Dominican Republic
East Timor
Ecuador
Egypt
El Salvador
Equatorial Guinea
Eritrea
Estonia
Ethiopia
Falkland Islands
Faroe Islands
Federated States of Micronesia
Fiji
Finland
France
French Guiana
French Polynesia
French Southern & Antarctic Lands
Gabon
Gambia
Georgia
Germany
Ghana
Gibraltar
Greece
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Hong Kong
Hungary
Iceland
India
Indonesia
Iraq
Ireland
Isle of Man
Israel
Italy
Jamaica
Japan
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Korea (North)
Korea (South)
Kuwait
Kyrgyzstan
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Macau
Macedonia
Madagascar
Malawi
Malaysia
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Mexico
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar (Burma)
Namibia
Nauru
Nepal
Netherlands
Netherlands Antilles
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
Northern Mariana Islands
Norway
Oman
Pakistan
Palau
Palestine
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Pitcairn
Poland
Portugal
Puerto Rico
Qatar
Reunion
Romania
Russia
Samoa (American)
Samoa (western)
San Marino
Sao Tome & Principe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Georgia & the South Sandwich Islands
Spain
Sri Lanka
St Barthelemy
St Helena
St Kitts & Nevis
St Lucia
St Martin (French part)
St Pierre & Miquelon
St Vincent
Sudan
Suriname
Svalbard & Jan Mayen
Swaziland
Sweden
Switzerland
Syria
Taiwan
Tajikistan
Tanzania
Thailand
Togo
Tokelau
Tonga
Trinidad & Tobago
Tunisia
Turkey
Turkmenistan
Turks & Caicos Is
Tuvalu
Uganda
Ukraine
United Arab Emirates
United States
US minor outlying islands
Uzbekistan
Vanuatu
Vatican City
Venezuela
Vietnam
Virgin Islands (UK)
Virgin Islands (US)
Wallis & Futuna
Western Sahara
Yemen
Zambia
Zimbabwe
Afghanistan
Albania
Algeria
Andorra
Angola
Anguilla
Antarctica
→Macquarie Island Station (Australia)
→Casey Station (Australia)
→Palmer Station (US)
→Davis Station (Australia)
→Dumont-d’Urville Station (France)
→Mawson Station (Australia)
→McMurdo Station (US)
→Amundsen-Scott Station (US)
→Rothera Station (UK)
→Syowa (Showa) Station (Japan)
→Vostok Station (Russia)
Antigua & Barbuda→Casey Station (Australia)
→Palmer Station (US)
→Davis Station (Australia)
→Dumont-d’Urville Station (France)
→Mawson Station (Australia)
→McMurdo Station (US)
→Amundsen-Scott Station (US)
→Rothera Station (UK)
→Syowa (Showa) Station (Japan)
→Vostok Station (Russia)
Argentina
Armenia
Aruba
Australia
→South Australia and Broken Hill
→Northern Territory
→New South Wales, Victoria, Tasmania, and the Capital Territory
→Queensland
→Western Australia
→Lord Howe Island
Austria→Northern Territory
→New South Wales, Victoria, Tasmania, and the Capital Territory
→Queensland
→Western Australia
→Lord Howe Island
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bosnia & Herzegovina
Botswana
Brazil
→Western Brazil (AC,AM,RR,RO)
→Mato Grosso, Mato Grosso do Sui
→NorthEast Brazil (RN,PB,PE,AL,SE,CE,PI,BA,MA,TO,PA,AP)
→South & SouthEast Brazil (GO,DF,MG,ES,RJ,SP,PR,SC,RS)
→Atlantic Islands
Britain (UK)→Mato Grosso, Mato Grosso do Sui
→NorthEast Brazil (RN,PB,PE,AL,SE,CE,PI,BA,MA,TO,PA,AP)
→South & SouthEast Brazil (GO,DF,MG,ES,RJ,SP,PR,SC,RS)
→Atlantic Islands
British Indian Ocean Territory
Brunei
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Canada
→Quebec – Lower North Shore
→Labrador (most), New Brunswick, Nova Scotia, Prince Edward Island, and Eastern Quebec
→Saskatchewan
→Manitoba, Central Nunavut, and West Ontario
→Southamptom Island, Nunavut and Atikokan, Ontario
→East Nunavut, East Ontario, Quebec (most)
→Dawson Creek and Fort Saint John, British Columbia
→Alberta, East British Columbia, Northwest Territories (most), and West Nunavut
→Newfoundland and SouthEast Labrador
→West British Columbia and Yukon
Cape Verde→Labrador (most), New Brunswick, Nova Scotia, Prince Edward Island, and Eastern Quebec
→Saskatchewan
→Manitoba, Central Nunavut, and West Ontario
→Southamptom Island, Nunavut and Atikokan, Ontario
→East Nunavut, East Ontario, Quebec (most)
→Dawson Creek and Fort Saint John, British Columbia
→Alberta, East British Columbia, Northwest Territories (most), and West Nunavut
→Newfoundland and SouthEast Labrador
→West British Columbia and Yukon
Cayman Islands
Central African Rep.
Chad
Chile
China
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo (Dem. Rep.)
Congo (Rep.)
Cook Islands
Costa Rica
Cote d’Ivoire
Croatia
Cuba
Cyprus
Czech Republic
Denmark
Djibouti
Dominica
Dominican Republic
East Timor
Ecuador
Egypt
El Salvador
Equatorial Guinea
Eritrea
Estonia
Ethiopia
Falkland Islands
Faroe Islands
Federated States of Micronesia
Fiji
Finland
France
French Guiana
French Polynesia
French Southern & Antarctic Lands
Gabon
Gambia
Georgia
Germany
Ghana
Gibraltar
Greece
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Hong Kong
Hungary
Iceland
India
Indonesia
→Sulawesi, Bali, Nusa Tenggara, South & East Kalimantan
→Maluku and Papua
→Sumatra, Java, West & Central Kalimantan
Iran→Maluku and Papua
→Sumatra, Java, West & Central Kalimantan
Iraq
Ireland
Isle of Man
Israel
Italy
Jamaica
Japan
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Korea (North)
Korea (South)
Kuwait
Kyrgyzstan
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Macau
Macedonia
Madagascar
Malawi
Malaysia
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Mexico
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar (Burma)
Namibia
Nauru
Nepal
Netherlands
Netherlands Antilles
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
Northern Mariana Islands
Norway
Oman
Pakistan
Palau
Palestine
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Pitcairn
Poland
Portugal
Puerto Rico
Qatar
Reunion
Romania
Russia
→Most of European Russia and all Russian railroads
→Kaliningrad Oblast
→Bashkortostan, Chelyabinsk Oblast, Khantia-Mansia, Kurgan Oblast, Orenburg Oblast, Perm Krai, Sverdlovsk Oblast, Tyumen Oblast, and Yamalia
→Altai Krai, Altai Republic, Kemerovo Oblast, Novosibirsk Oblast, Omsk Oblast and Tomsk Oblast
→Khakassia, Krasnoyarsk Krai and Tuva
→Buryatia and Irkutsk Oblast
→Amur Oblast, western Sakha Republic and Zabaykalsky Krai
→The Jewish Autonomous Oblast, Khabarovsk Krai, Primorsky Krai, central Sakha Republic and Sakhalin Island
→Magadan Oblast, eastern Sakha, Kuril Islands, Chukotka and Kamchatka Krai
Rwanda→Kaliningrad Oblast
→Bashkortostan, Chelyabinsk Oblast, Khantia-Mansia, Kurgan Oblast, Orenburg Oblast, Perm Krai, Sverdlovsk Oblast, Tyumen Oblast, and Yamalia
→Altai Krai, Altai Republic, Kemerovo Oblast, Novosibirsk Oblast, Omsk Oblast and Tomsk Oblast
→Khakassia, Krasnoyarsk Krai and Tuva
→Buryatia and Irkutsk Oblast
→Amur Oblast, western Sakha Republic and Zabaykalsky Krai
→The Jewish Autonomous Oblast, Khabarovsk Krai, Primorsky Krai, central Sakha Republic and Sakhalin Island
→Magadan Oblast, eastern Sakha, Kuril Islands, Chukotka and Kamchatka Krai
Samoa (American)
Samoa (western)
San Marino
Sao Tome & Principe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Georgia & the South Sandwich Islands
Spain
Sri Lanka
St Barthelemy
St Helena
St Kitts & Nevis
St Lucia
St Martin (French part)
St Pierre & Miquelon
St Vincent
Sudan
Suriname
Svalbard & Jan Mayen
Swaziland
Sweden
Switzerland
Syria
Taiwan
Tajikistan
Tanzania
Thailand
Togo
Tokelau
Tonga
Trinidad & Tobago
Tunisia
Turkey
Turkmenistan
Turks & Caicos Is
Tuvalu
Uganda
Ukraine
United Arab Emirates
United States
→most of the state of Alaska
→Central (Gulf Coast, Tennessee Valley, and Great Plains)
→Atlantic coast, Eastern Ohio Valley, and Michigan (most)
→Western Aleutian Islands
→Hawaii
→Rocky Mountains
→Arizona
→Pacific coast plus Nevada
Uruguay→Central (Gulf Coast, Tennessee Valley, and Great Plains)
→Atlantic coast, Eastern Ohio Valley, and Michigan (most)
→Western Aleutian Islands
→Hawaii
→Rocky Mountains
→Arizona
→Pacific coast plus Nevada
US minor outlying islands
Uzbekistan
Vanuatu
Vatican City
Venezuela
Vietnam
Virgin Islands (UK)
Virgin Islands (US)
Wallis & Futuna
Western Sahara
Yemen
Zambia
Zimbabwe
This calculator will be really useful when business travels are made and time and date difference between two countries are essential