Today, approximately 70 countries utilise Daylight Saving Time in at least a portion of the country. The only major industrialized country not to have introduced daylight saving is Japan.
While European nations have been taking advantage of the time change for decades, in 1996 the European Union (EU) standardized an EU-wide "summertime period." The EU version of Daylight Saving Time runs from the last Sunday in March through the last Sunday in October. During the summer, Russia's clocks are two hours ahead of standard time. For example, Moscow standard time (UTC+3) is about a half-hour ahead of local mean time (UTC+2:30); this is about the same situation as Detroit, where the standard time (UTC-5) is also about a half-hour ahead of local mean time (UTC-5:32). During the winter, all 11 of the Russian time zones remain an hour ahead of standard time. With their high latitude, the two hours of Daylight Saving Time really help to save daylight. In the Southern Hemisphere where summer comes in December, Daylight Saving Time is observed from October to March. (The clock at above right is viewed from within the Musée d'Orsay in Paris.)
Countries/states/regions that utilise DST:
Albania
Andorra
Armenia
Austria
Azerbaijan
Bahamas
Belarus
Belgium
Bosnia and Herzegovina
Bulgaria
Canada (except Saskatchewan)
Croatia
Cuba
Cyprus
Czech Republic
Denmark
Denmark - Faroe Islands
Denmark - Greenland
Egypt
Estonia
Finland
France
Gaza Strip, West Bank
Germany
Greece
Guatemala
Haiti
Hungary
Iran
Iraq
Ireland
Israel
Italy
Jordan
Latvia
Lebanon
Liechtenstein
Lithuania
Luxembourg
Macedonia
Malta
Mexico (except Sonora)
Moldova
Monaco
Mongolia
Montenegro
Netherlands
Nicaragua
Norway
Poland
Portugal
Portugal - Madeira
Portugal - Azores
Romania
Russia
Saint Pierre and Miquelon
San Marino
Serbia
Slovak Republic
Slovenia
Spain
Spain - Canary Islands
Sweden
Switzerland
Syria
Tunisia
Turkey
Turks and Caicos Islands
UK - Bermuda, England, Gibraltar, Northern Ireland, Scotland, Wales,
USA (except Hawaii, Arizona)
Ukraine
Vatican City
Australia (NSW, TAS, VIC, SA, ACT, Lord Howe Island)
New Zealand and Chatham Islands
Brazil
Chile
Chile- Easter Island
Namibia
Paraguay
Falklands
Uruguay
Antarctica - Amundsen-Scott (South Pole), McMurdo Station (USA), Scott Station (NZ), Palmer Station (USA), O'Higgins Station (Chile)
There are many oddities. For example, some parts of the U.S. and Canada do not observe Daylight Saving Time, such as the state of Arizona (U.S.) and the province Saskatchewan (Canada).