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Tuesday, October 11, 2011

0 WHEN DOES 'DAYLIGHT SAVING TIME' BEGINS AND ENDS FOR 2011?



Well, that depends on where you live.


Most of the United States and Canada begins Daylight Saving Time at 2:00 a.m. on the second Sunday in March and reverts to standard time on the first Sunday in November. In the U.S., each time zone switches at a different time.

In the European Union, Summer Time begins and ends at 1:00 a.m. Universal Time (Greenwich Mean Time). It begins the last Sunday in March and ends the last Sunday in October. In the EU, all time zones change at the same moment.

Today, approximately 70 countries utilize Daylight Saving Time in at least a portion of the country. Most areas of North America and Europe observe daylight saving time (DST), while most areas of Africa and Asia do not.  Japan, India, and China are the only major industrialized countries that do not observe some form of daylight saving.
South America is mixed, with most countries in the warmer north of the continent near the equator not observing DST, while Chile, Paraguay, and Uruguay and southern parts of Brazil do.  Oceania is also mixed, with New Zealand and parts of southern Australia observing DST, while most other areas do not.





What is Daylight Saving Time?

Daylight Saving Time (DST)—also "summer time" in several countries including in British English and European official terminology (see Terminology)—is the practice of temporarily advancing clocks during the summer time so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn.  Modern DST was first proposed in 1895 by George Vernon Hudson.  Many countries have used it since then; details vary by location and change occasionally. When DST is not observed, it is called standard time, normal time or winter time.

Daylight Saving Time Around the World

Equatorial and tropical countries (lower latitudes) generally do not observe Daylight Saving Time. Since the daylight hours are similar during every season, there is no advantage to moving clocks forward during the summer. China has had a single time zone since May 1, 1980, observing summer Daylight Saving Time from 1986 through 1991; they do not observe DST now.



A

COUNTRY REGION/STATES DST
START
and END Dates
Afghanistan All locations No DST in 2011
Albania All locations START: Sunday, March 27.
END: Sunday, October 30
Algeria All locations No DST in 2011
Andorra All locations START: Sunday, March 27.
END: Sunday, October 30
Angola All locations No DST in 2011
Anguilla All locations No DST in 2011
Antarctica Most locations (Ex. Mawson)
Some locations (Ex. South Pole)
No DST in 2011

START:Sunday, September 25
END:Sunday, April 3
Antigua and Barbuda All locations No DST in 2011
Argentina All locations No DST in 2011
Armenia All locations START: Sunday, March 27.
END: Sunday, October 30
Aruba All locations No DST in 2011
Australia Most locations (Ex. Melbourne)



Queensland, Northern Territory, Western Australia,Christmas Island (Ex. Brisbane)

Lord Howe Island




Other (Ex. Macquarie Island)
START:Sunday, October 2
END: Sunday, April 3

No DST in 2011


START:Sunday, October 2
END: Sunday, April 3

DST All Year in 2011.
Austria All locations START: Sunday, March 27.
END: Sunday, October 30
Azerbaijan All locations START: Sunday, March 27.
END: Sunday, October 30


B

COUNTRY REGION/STATES DST
START
and END Dates
Bahrain All locations No DST in 2011
Bangladesh All locations No DST in 2011
Barbados All locations No DST in 2011
Belarus All locations START: Sunday, March 27.
DOES NOT END this year
Belgium All locations START: Sunday, March 27.
END: Sunday, October 30
Belize All locations No DST in 2011
Benin All locations No DST in 2011
Bermuda All locations START: Sunday, March 13.
END: Sunday, November 6
Bhutan All locations No DST in 2011
Bolivia All locations No DST in 2011
Bosnia and Herzegovina All locations START: Sunday, March 27.
END: Sunday, October 30
Botswana All locations No DST in 2011
Brazil Most locations (Ex. Rio de Janeiro)


Amazonas, Pernambuco, Sergipe, Para,Paraíba, Ceará, Amapá, Alagoas, Rondônia, Rio Grande do Norte, Piauí, Maranhão, Acre, Roraima, Tocantins (Ex. Manaus)


Bahia
START:Sunday, October 16
END:Sunday, February 20

No DST in 2011



START: Sunday, October 16
END: DOES NOT END this year
Britische Jungferninseln All locations No DST in 2011
British Indian Ocean Territory All locations No DST in 2011
Brunei All locations No DST in 2011
Bulgaria All locations START: Sunday, March 27.
END: Sunday, October 30
Burkina Faso All locations No DST in 2011
Burundi All locations No DST in 2011


C

COUNTRY REGION/STATES DST
START
and END Dates
Cambodia All locations No DST in 2011
Cameroon All locations No DST in 2011
Canada Most locations (Ex.Montreal)




Much of Saskatchewan, small region of British Columbia, small region of Nunavut Territory, small region of Quebec, small region of Ontario
START: Sunday, March 13
END: Sunday, November 6




No DST in 2011
Cape Verde All locations No DST in 2011
Cayman Islands All locations No DST in 2011
Central African Republic All locations No DST in 2011
Chad All locations No DST in 2011
Chile Most locations(Ex. Santiago)



Other (Ex. Easter Island)
START: Sunday, August 21
END:Sunday, May 8

START: Sunday, August 20
END:Sunday, May 7
China All locations No DST in 2011
Colombia All locations No DST in 2011
Commonwealth of the Norther Mariana Islands All locations No DST in 2011
Comoros All locations No DST in 2011
Cook Islands All locations No DST in 2011
Costa Rica All locations No DST in 2011
Cote d'lvoire All locations No DST in 2011
Croatia All locations START: Sunday, March 27
END: Sunday, October 30
Cuba All locations START: Sunday, March 20
END: Sunday, October 30
Curaçao All locations No DST in 2011
Cyprus All locations START: Sunday, March 27
END: Sunday, October 30
Czech Republic All locations START: Sunday, March 27
END: Sunday, October 30


D

COUNTRY REGION/STATES DST
START
and END Dates
Democratic Republic of the Congo All locations No DST in 2011
Denmark All locations START: Sunday, March 27
END: Sunday, October 30
Departmental Collectivity of Mayotte All locations No DST in 2011
Dijibouti All locations No DST in 2011
Dominica All locations No DST in 2011
Dominican Republic All locations No DST in 2011

E

COUNTRY REGION/STATES DST
START
and END Dates
East Timor All locations No DST in 2011
Ecuador All locations No DST in 2011
Egypt All locations No DST in 2011
El Salvador All locations No DST in 2011
Equatorial Guinea All locations No DST in 2011
Eritrea All locations No DST in 2011
Estonia All locations START: Sunday, March 27
END: Sunday, October 30
Ethiopia All locations No DST in 2011

F

COUNTRY REGION/STATES DST
START
and END Dates
Falkland Islands All locations DST All Year in 2011
Färöer All locations START: Sunday, March 27
END: Sunday, October 30
Fiji All locations START: Sunday, October 23
END: Sunday, March 6
Finland All locations START: Sunday, March 27
END: Sunday, October 30
France Most locations (Ex. Paris)





Tahiti, New Caledonia, Marquesas Islands
START: Sunday, March 27
END: Sunday, October 30

No DST in 2011
Französisch-Guayana All locations No DST in 2011
Französisch-Polynesien All locations No DST in 2011

G

COUNTRY REGION/STATES DST
START
and END Dates
Gabon All locations No DST in 2011
Gaza Strip All locations START: Saturday, April 2
END: Monday, August 1
Georgia All locations No DST in 2011
Germany All locations START: Saturday, March 27
END: Sunday, October 30
Ghana All locations No DST in 2011
Gibraltar All locations START: Saturday, March 27
END: Sunday, October 30
Greece All locations START: Saturday, March 27
END: Sunday, October 30
Greenland Most locations(Ex. Nuuk)


Ittoqqortoormiit



Qaanaaq





Danmarkshavn
START: Saturday, March 26
END: Saturday, October 29

START: Sunday, March 27
END: Sunday, October 30

START: Sunday, March 13
END: Sunday, November 6





No DST in 2011
Grenada All locations No DST in 2011
Guadeloupe All locations No DST in 2011
Guatemala All locations No DST in 2011
Guinea All locations No DST in 2011
Guinea-Bissau All locations No DST in 2011
Guyana All locations No DST in 2011

H

COUNTRY REGION/STATES DST
START
and END Dates
Haiti All locations No DST in 2011
Holy See (Vatican City) All locations START: Sunday, March 27
END: Sunday, October 30
Honduras All locations No DST in 2011
Hong Kong Special Administrative Region All locations No DST in 2011
Hungary All locations START: Saturday, March 27
END: Sunday, October 30

I

COUNTRY REGION/STATES DST
START
and END Dates
Iceland All locations No DST in 2011
India All locations No DST in 2011
Indonesia All locations No DST in 2011
Iran All locations START: Tuesday, March 22
END: Thursday, September 22
Iraq All locations No DST in 2011
Ireland All locations START: Sunday, March 27
END: Sunday, October 30
Isle of Man All locations START: Sunday, March 27
END: Sunday, October 30
Israel All locations START: Friday, April 1
END: Sunday, October 2
Italy All locations START: Sunday, March 27
END: Sunday, October 30

J, K, L

COUNTRY REGION/STATES DST
START
and END Dates
Jamaica All locations No DST in 2011
Japan All locations No DST in 2011
Jordan All locations START: Friday, April 1
END: Friday, October 28
Kazakhstan All locations No DST in 2011
Kenya All locations No DST in 2011
Kerguelen All locations No DST in 2011
Kiribati All locations No DST in 2011
Kosovo All locations START: Sunday, March 27
END: Sunday, October 30
Kuwait All locations No DST in 2011
Kyrgyzstan All locations No DST in 2011
Laos All locations No DST in 2011
Latvia All locations START: Sunday, March 27
END: Sunday, October 30
Lebanon All locations START: Sunday, March 27
END: Sunday, October 30
Lesotho All locations No DST in 2011
Liberia All locations No DST in 2011
Libya All locations No DST in 2011
Liechtenstein All locations START: Sunday, March 27
END: Sunday, October 30
Lithuania All locations START: Sunday, March 27
END: Sunday, October 30
Luxembourg All locations START: Sunday, March 27
END: Sunday, October 30

M, N, O

COUNTRY REGION/STATES DST
START
and END Dates
Macau Special
Administrative Region
All locations No DST in 2011
Madagascar All locations No DST in 2011
Malawi All locations No DST in 2011
Malaysia All locations No DST in 2011
Maldives All locations No DST in 2011
Mali All locations No DST in 2011
Malta All locations START: Sunday, March 27
END: Sunday, October 30
Marshall Islands All locations No DST in 2011
Martinique All locations No DST in 2011
Mauritania All locations No DST in 2011
Mauritius All locations No DST in 2011
Mexico Most locations (Ex. Mexico City)







Baja California, much of Chihuahua,Tamaulipas,





Sonora (Ex. Hermosillo)


START: Sunday, April 3
END: Sunday, October 30

START: Sunday, March 13
END: Sunday, November 6




No DST in 2011
Micronesia All locations No DST in 2011
Moldova All locations START: Sunday, March 27
END: Sunday, October 30
Monaco All locations START: Sunday, March 27
END: Sunday, October 30
Mongolia All locations No DST in 2011
Montenegro All locations START: Sunday, March 27
END: Sunday, October 30
Montserrat All locations No DST in 2011
Morocco All locations START: Sunday, April 3
END: Sunday, July 31
Mozambique All locations No DST in 2011
Myanmar All locations No DST in 2011
Namibia All locations START: Sunday, September 4
END: Sunday, April 3
Nauru All locations No DST in 2011
Nepal All locations No DST in 2011
Netherlands Most locations (Ex. Amsterdam)




Saint Martin
START: Sunday, March 27
END: Sunday, October 30

No DST in 2011
New Zealand All locations START: Sunday, September 25
END: Sunday, April 3
Nicaragua All locations No DST in 2011
Niger All locations No DST in 2011
Nigeria All locations No DST in 2011
Niue All locations No DST in 2011
Norfokinsel All locations No DST in 2011
North Korea All locations No DST in 2011
Norway All locations START: Sunday, March 27
END: Sunday, October 30
Oman All locations No DST in 2011

P, Q, R

COUNTRY REGION/STATES DST
START
and END Dates
Pakistan All locations No DST in 2011
Palau All locations No DST in 2011
Panama All locations No DST in 2011
Papua New Guinea All locations No DST in 2011
Paraguay All locations START: Sunday, October 2
END: Sunday, April 10
Peru All locations No DST in 2011
Philippines All locations No DST in 2011
Pitcairninseln All locations No DST in 2011
Poland All locations START: Sunday, March 27
END: Sunday, October 30
Portugal All locations START: Sunday, March 27
END: Sunday, October 30
Puerto Rico All locations No DST in 2011
Qatar All locations No DST in 2011
Republic of Macedonia All locations START: Sunday, March 27
END: Sunday, October 30
Republic of South Sudan All locations No DST in 2011
Republic of the Congo All locations No DST in 2011
Reunion All locations No DST in 2011
Romania All locations START: Sunday, March 27
END: Sunday, October 30
Russia Most locations (Ex. Moscow)




Some locations (Ex. Anadyr)
START: Sunday, March 27
END: DOES NOT END this year



No DST in 2011
Rwanda All locations No DST in 2011
Rwanda All locations No DST in 2011

S

COUNTRY REGION/STATES DST
START
and END Dates
Saint Kitts and Nevis All locations No DST in 2011
Saint Lucia All locations No DST in 2011
Saint Vincent and
the Grenadines
All locations No DST in 2011
Samoa All locations START: Saturday, September 24
END: Saturday, April 2
San Marino All locations START: Sunday, March 27
END: Sunday, October 30
Sao Tome and Principe All locations No DST in 2011
Saudi Arabia All locations No DST in 2011
Senegal All locations No DST in 2011
Serbia All locations START: Sunday, March 27END: Sunday, October 30
Seychelles All locations No DST in 2011
Sierra Leone All locations No DST in 2011
Singapore All locations No DST in 2011
Slovakia All locations START: Sunday, March 27END: Sunday, October 30
Slovenia All locations START: Sunday, March 27END: Sunday, October 30
Solomon Islands All locations No DST in 2011
Somalia All locations No DST in 2011
South Africa All locations No DST in 2011
South Georgia and
the South
Sandwich Islands
All locations No DST in 2011
South Korea All locations No DST in 2011
Spain All locations START: Sunday, March 27END: Sunday, October 30
Sri Lanka All locations No DST in 2011
St. Helena All locations No DST in 2011
Sudan All locations No DST in 2011
Suriname All locations No DST in 2011
Swaziland All locations No DST in 2011
Sweden All locations START: Sunday, March 27END: Sunday, October 30
Switzerland All locations START: Sunday, March 27END: Sunday, October 30
Syria All locations START: Friday, April 1END: Friday, October 28

T, U

COUNTRY REGION/STATES DST
START
and END Dates
Taiwan All locations No DST in 2011
Tajikistan All locations No DST in 2011
Tanzania All locations No DST in 2011
Territorial
Collectivity of
Saint Pierre and
Miquelon
All locations START: Sunday, March 13
END: Sunday, November 6
Territory of
American Samoa
All locations No DST in 2011
Territory of Cocos
(Keeling)Islands
All locations No DST in 2011
Territory of Guam All locations No DST in 2011
Thailand All locations No DST in 2011
The Bahamas All locations START: Sunday, March 13
END: Sunday, November 6
The Gambia All locations No DST in 2011
Togo All locations No DST in 2011
Tokelau All locations No DST in 2011
Tonga All locations No DST in 2011
Trinidad and Tobago All locations No DST in 2011
Tunisia All locations No DST in 2011
Turkey All locations START: Monday, March 28
END: Sunday, October 30
Turkmenistan All locations No DST in 2011
Turks and Caicos
Islands
All locations START: Sunday, March 13
END: Sunday, November 6
Tuvalu All locations No DST in 2011
Uganda All locations No DST in 2011
Ukraine All locations No DST in 2011
United Arab Emirates All locations No DST in 2011
United Kingdom All locations START: Sunday, March 27
END: Sunday, October 30
United States Most locations (Ex. Washington, D.C.)



Hawaii, Arizona, Midway Islands, Wake Island (Ex. Honolulu)
START: Sunday, March 13
END: Sunday, November 6



No DST in 2011
United States
Virgin Islands
All locations No DST in 2011
Uruguay All locations START: Sunday, October 2
END: Sunday, March 13
Uzbekistan All locations No DST in 2011

V, W, Y and Z

COUNTRY REGION/STATES DST
START
and END Dates
Vanuatu All locations No DST in 2011
Venezuela All locations No DST in 2011
Vietnam All locations No DST in 2011
Wallis und Futuna All locations No DST in 2011
West Bank All locations START: Friday, April 1*
END: Friday, September 30*
Western Sahara All locations START: Sunday, April 3
END: Sunday, July 31
Yemen All locations No DST in 2011
Zambia All locations No DST in 2011
Zimbabwe All locations No DST in 2011





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).

Observance can also be erratic. For example, Chile delayed its changeover date for the Pope's visit in 1987, as well as for a presidential inauguration in 1990.

Europe

In general, all countries in Europe except Belarus, Iceland, Russia and Ukraine observe DST, and most change on the same date and time, starting on the last Sunday in March and ending on the last Sunday in October.

Before 1996, DST ended on the last Sunday in September in most European countries; however in the United Kingdom and Ireland DST ended on the fourth (which some years is not the last) Sunday in October.

European Countries Without DST
These countries or regions do not use daylight saving time:
  • Belarus, ended its last DST switching after moving the clocks forward in Spring 2011, and is now observing UTC + 03:00 all year round.
  • Iceland, observing UTC all year round despite being at a longitude which would indicate UTC-1, the country may be thought of as being on continuous DST. Iceland's high latitude means that sunset and sunrise times change by many hours over the year, and the effect of changing the clock by one hour would, in comparison, be small.
  • Russia, ended its last DST switching after moving the clocks forward in Spring 2011, and is now observing the time that formerly was DST, all year round. Many areas have its time two hours ahead of the mean solar time. Moscow has UTC + 04:00.
  • Ukraine, ended its last DST switching after moving the clocks forward in Spring 2011, and is now observing UTC + 03:00 all year round.


Canada
In Canada, time is under provincial and territorial jurisdiction, not federal. Since at least the 1970s, all provinces and territories have matched their DST start and end dates to those used in the United States, and when the U.S. Congress changed the rules effective 2007 the provinces and territories (except Saskatchewan) changed their time legislation to match. Since 2007, DST in Canada starts on the second Sunday in March, and returns to standard time on the first Sunday of November, to coincide with the U.S. dates.  Most of Saskatchewan does not technically observe DST but rather observes a skewed 'standard time' that has been advanced one hour forward permanently (that is, observing what is sometimes known as 'year-round DST').


United States
Most areas of the United States currently observe daylight saving time. The exceptions are Arizona, Hawaii, and the territories of Puerto Rico, the Virgin Islands, American Samoa, Guam, and the Northern Mariana Islands. In Arizona, the Navajo Nation observes daylight saving time.
From 1987 to 2006, daylight saving time in the United States began on the first Sunday of April and ended on the last Sunday of October. The time is adjusted at 2:00 a.m. (02:00) local time.
By the Energy Policy Act of 2005, daylight saving time (DST) was extended in the United States beginning in 2007. DST currently starts on the second Sunday of March, which is three or four weeks earlier than in the past, and it ends on the first Sunday of November, one week later than in years past. The time is adjusted at 2:00 a.m. (02:00) local time. This change resulted in a new DST period that is four weeks (five in years when March has five Sundays) longer than in previous years.


Finally...
The practice has been both praised and criticized.  Adding daylight to afternoons benefits retailing, sports, and other activities that exploit sunlight after working hours, but causes problems for farming, evening entertainment and other occupations tied to the sun.  Its effect on health and crime is less clear. Although an early goal of DST was to reduce evening usage of incandescent lighting, formerly a primary use of electricity, modern heating and cooling usage patterns differ greatly, and research about how DST currently affects energy use is limited or contradictory.

DST clock shifts present other challenges. They complicate timekeeping, and can disrupt meetings, travel, billing, recordkeeping, medical devices, heavy equipment, and sleep patterns.  Software can often adjust computer clocks automatically, but this can be limited and error-prone, particularly when DST protocols are changed.


Source(s):  wikipedia, timeanddate.comwebexhibits.orgwikipedia, nationalgeographic.com

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