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Daylight Saving Time
Daylight Saving Time is the practice of advancing clocks one hour near the end of spring and setting clocks back to standard time in autumn. While it is widely adopted, it has also been criticized as it affects various activities.
1,430 Questions
One hour prior to the second dose, on the new clock. If it's daily, then 6am. In regards to medication it is always best to consult your doctor or pharmacist if you are in doubt. It Depends on what type of medication you are taking. Some drugs are more time sensitive than others.
When was the time change in previous years?
The time change typically occurs twice a year in the majority of regions: one in spring when clocks are moved forward by one hour, and then in fall when clocks are moved back by one hour. The exact dates for the time change vary by location and can be confirmed by checking local sources or official announcements for each specific year.
When does day light saving time go back?
Daylight saving time typically ends on the first Sunday in November each year. This is when we "fall back" and set our clocks back by one hour to return to standard time.
What are 3 states that do not follow day light saving time?
Arizona, Hawaii, and Puerto Rico do not follow daylight saving time.
What president signed into law the daylight saving time energy act on January 4 1947?
President Franklin D. Roosevelt signed the Daylight Saving Time Energy Act on January 20, 1942. The act was implemented during World War II to conserve energy resources.
When does Daylights Saving Time begin in the US?
- from the last Sunday of March
- until the last Sunday of October
The following DST schedule for 2010 applies to most countries in Europe:
- DST annually starts at 1am (01:00) UTC on the last Sunday of March, for 2010 thoi is March 28.
- DST ends at 1am (01:00) UTC on the last Sunday of October each year, for 2010 this is October 31.
(Iceland does not observe DST)
How many countries change their clocks in spring and autumn?
Approximately 70 countries around the world participate in daylight saving time by changing their clocks forward in spring and backward in autumn. This practice is aimed at making better use of daylight and reducing energy consumption. However, not all countries observe daylight saving time.
When did you start daylight savings?
Daylight saving time was first introduced during World War I in Germany and Austria in 1916 as a way to conserve energy. The practice has since been adopted by many countries around the world to make better use of daylight hours during the longer days of summer.
When does day light saving time start?
For those countries that use it, not all do, it varies slightly. It usually starts at the end of March and ends at the end of October.
The time normally changes at 02:00 on a Sunday near the end of these months.
- Afghanistan - never did DST; last time change was in 1945
- Åland Islands - last Sunday of March @ 1 AM UTC (3 AM EET)
- Albania - last Sunday of March @ 1 AM UTC (2 AM CET)
- Algeria - has been on "permanent" DST since 1981
- American Samoa - never did DST; last time change was in 1950
- Andorra - last Sunday of March @ 1 AM UTC (2 AM CET)
- Angola - never did DST; last time change was in 1911
- Anguilla - never did DST; last time change was in 1912
- Antarctica - One station follows New Zealand time, which starts DST on the last Sunday of September @ 2 AM NZST (Sat. @ 2 PM UTC), and one station follows Chile time, which starts DST on the day after the 1st Saturday of September @ 4 AM UTC (midnight CLT).
- Antigua & Barbuda - never did DST; last time change was in 1951
- Argentina - quit DST in 2009
- Armenia - quit DST in 2011
- Aruba - never did DST; last time change was in 1965
- Australia - 1st Sun. of Oct. @ 2 AM LHST, 2 AM AEST & 2 AM ACST (Sat. @ 3:30 PM, 4 PM & 4:30 PM UTC) - Some parts do not do DST.
- Austria - last Sunday of March @ 1 AM UTC (2 AM CET)
- Azerbaijan - last Sunday of March @ 4 AM AZT (midnight UTC)
- Bahamas - 2nd Sunday of March @ 2 AM EST (7 AM UTC)
- Bahrain - never did DST; last time change was in 1972
- Bangladesh - quit DST in 2009
- Barbados - quit DST in 1980
- Belarus - has been on "permanent" DST since 2011
- Belgium - last Sunday of March @ 1 AM UTC (2 AM CET)
- Belize - quit DST in 1983
- Benin - never did DST; last time change was in 1934
- Bermuda - 2nd Sunday of March @ 2 AM AST (6 AM UTC)
- Bhutan - never did DST; last time change was in 1987
- Bolivia - quit DST in 1932
- Bonaire, Sint Eustatius & Saba - never did DST; last time change was in 1965
- Bosnia & Herzegovina - last Sunday of March @ 1 AM UTC (2 AM CET)
- Botswana - quit DST in 1944
- Brazil - 3rd Sunday of October @ midnight BRT & midnight ANT (3 AM & 4 AM UTC) - Some parts do not do DST.
- British Indian Ocean Territories - never did DST; last time change was in 1996
- British Virgin Islands - never did DST; no time changes since adopting standard time in 1911
- Brunei Darussalam - never did DST; last time change was in 1933
- Bulgaria - last Sunday of March @ 1 AM UTC (3 AM EET)
- Burkina Faso - never did DST; last time change was in 1912
- Burundi - never did DST; last time change was in 1890
- Cambodia - never did DST; last time change was in 1931
- Cameroon - never did DST; last time change was in 1912
- Canada - 2nd Sun. of March @ 2 AM NST, 2 AM AST, 2 AM EST, 2 AM CST, 2 AM MST & 2 AM PST (5:30 AM, 6 AM, 7 AM, 8 AM, 9 AM & 10 AM UTC) - Some parts do not do DST.
- Cape Verde - has been on "permanent" DST since 1975
- Cayman Is. - never did DST; last time change was in 1912
- Central African Rep. - never did DST; last time change was in 1912
- Chad - quit DST in 1980
- Chile - the day after the 1st Saturday of September @ 4 AM UTC (midnight CLT; Sat. @ 10 PM EAST)
- China - quit DST in 1991
- Christmas Is. - never did DST; last time change was in 1895
- Cocos (Keeling) Is. - never did DST; last time change was in 1900
- Colombia - quit DST in 1993
- Comoros - never did DST; last time change was in 1911
- Congo - never did DST; last time change was in 1912
- D. R. Congo - never did DST; last time change was in 1897
- Cook Is. - quit DST in 1991
- Costa Rica - quit DST in 1992
- Côte d'Ivoire - never did DST; last time change was in 1912
- Croatia - last Sunday of March @ 1 AM UTC (2 AM CET)
- Cuba - 2nd Sunday of March @ 5 AM UTC (midnight CUST)
- Curaçao - never did DST; last time change was in 1965
- Cyprus - last Sunday of March @ 1 AM UTC (3 AM EET)
- Czech Rep. - last Sunday of March @ 1 AM UTC (2 AM CET)
- Denmark - last Sunday of March @ 1 AM UTC (2 AM CET)
- Djibouti - never did DST; last time change was in 1911
- Dominica - never did DST; last time change was in 1912
- Dominican Rep. - has been on "permanent" DST since 2000
- Ecuador - never did DST; last time change was in 1986
- Egypt - quit DST in 2010
- El Salvador - quit DST in 1988
- Equatorial Guinea - never did DST; last time change was in 1963
- Eritrea - never did DST; last time change was in 1936
- Estonia - last Sunday of March @ 1 AM UTC (3 AM EET)
- Ethiopia - never did DST; last time change was in 1936
- Falkland Is. - has been on "permanent" DST since 2010
- Faroe Is. - last Sunday of March @ 1 AM UTC (1 AM WET)
- Fiji - the day before the 4th Mon. of Oct. @ 2 AM FJT (Sat. @ 2 PM UTC)
- Finland - last Sunday of March @ 1 AM UTC (3 AM EET)
- France - last Sunday of March @ 1 AM UTC (2 AM CET)
- French Guiana - never did DST; last time change was in 1967
- French Polynesia - never did DST; last time change was in 1912
- French Southern Territories - never did DST - Time started there when first inhabitants arrived in 1950.
- Gabon - never did DST; last time change was in 1912
- The Gambia - has been on "permanent" DST since 1964
- Georgia - has been on "permanent" DST since 2005
- Germany - last Sunday of March @ 1 AM UTC (2 AM CET)
- Ghana - quit DST in 1942
- Gibraltar - last Sunday of March @ 1 AM UTC (2 AM CET)
- Greece - last Sunday of March @ 1 AM UTC (3 AM EET)
- Greenland - 2nd Sun. of March @ 2 AM AST (6 AM UTC) & the last Sun. of March @ 1 AM UTC (midnight EGT & Sat. @ 10 PM WGT)
- Grenada - never did DST; last time change was in 1912
- Guadeloupe - never did DST; last time change was in 1912
- Guam - never did DST; last time change was in 1901
- Guatemala - quit DST in 2006
- Guernsey - last Sunday of March @ 1 AM UTC (1 AM GMT)
- Guinea - has been on "permanent" DST since 1960
- Guinea-Bissau - has been on "permanent" DST since 1975
- Guyana - never did DST; last time change was in 1991
- Haiti - 2nd Sunday of March @ 2 AM EST (7 AM UTC)
- Honduras - quit DST in 2006
- Hong Kong - quit DST in 1979
- Hungary - last Sunday of March @ 1 AM UTC (2 AM CET)
- Iceland - has been on "permanent" DST since 1968
- India - quit DST in 1945
- Indonesia - never did DST; last time change was in 1988
- Iran - the 22nd or 21st of March @ midnight IRST (21st or 20th @ 8:30 PM UTC)
- Iraq - quit DST in 2007
- Ireland - last Sunday of March @ 1 AM UTC (1 AM GMT)
- Isle of Mann - last Sunday of March @ 1 AM UTC (1 AM GMT)
- Israel - the Friday before the last Sunday of March @ 2 AM ILST (midnight UTC)
- Italy - last Sunday of March @ 1 AM UTC (2 AM CET)
- Jamaica - quit DST in 1983
- Japan - quit DST in 1951
- Jersey - last Sunday of March @ 1 AM UTC (1 AM GMT)
- Jordan - last Thursday of March @ 10 PM UTC (midnight EET)
- Kazakhstan - quit DST in 2004
- Kenya - never did DST; last time change was in 1960
- Kiribati - never did DST; last time change was in 1995 (actually the time stayed the same and the date changed)
- Kuwait - never did DST; last time change was in 1950
- Kyrgyzstan - has been on "permanent" DST since 2005
- Laos - never did DST; last time change was in 1931
- Latvia - last Sunday of March @ 1 AM UTC (3 AM EET)
- Lebanon - the day before the last Sunday of March @ 10 PM EET (midnight UTC)
- Lesotho - quit DST in 1944
- Liberia - never did DST; last time change was in 1972, when it became the last country to switch from a standard time that was not a multiple of 15 or 20 minutes from GMT
- Libya - has been on "permanent" DST since 2013
- Liechtenstein - last Sunday of March @ 1 AM UTC (2 AM CET)
- Lithuania - last Sunday of March @ 1 AM UTC (3 AM EET)
- Luxembourg - last Sunday of March @ 1 AM UTC (2 AM CET)
- Macao - quit DST in 1991
- Macedonia - last Sunday of March @ 1 AM UTC (2 AM CET)
- Madagascar - quit DST in 1954
- Malawi - never did DST; last time change was in 1903
- Malaysia - has been on "permanent" DST since 1936
- Maldives - never did DST; last time change was in 1960
- Mali - never did DST; last time change was in 1960
- Malta - last Sunday of March @ 1 AM UTC (2 AM CET)
- Marshall Is. - never did DST; last time change was in 1993
- Martinique - quit DST in 1980
- Mauritania - has been on "permanent" DST since 1960
- Mauritius - quit DST in 2009
- Mayotte - no time changes since adopting standard time in 1911
- Mexico - 2nd Sun. of March @ 2 AM CST, 2 AM MST & 2 AM PST (8 AM, 9 AM & 10 AM UTC) & 1st Sun. of April @ 2 AM CST, 2 AM MST & 2 AM PST (8 AM, 9 AM & 10 AM UTC) - The state of Sonora does not do DST.
- Fed. St. of Micronesia - never did DST; last time change was in 1999
- Moldova - last Sunday of March @ 1 AM UTC (3 AM EET)
- Monaco - last Sunday of March @ 1 AM UTC (2 AM CET)
- Mongolia - quit DST in 2006
- Montenegro - last Sunday of March @ 1 AM UTC (2 AM CET)
- Montserrat - no time changes since adopting standard time in 1912
- Morocco - last Sunday of March @ 2 AM WET (2 AM UTC) & the 1st day after Ramadan @ 2 AM WET (2 AM UTC)
- Mozambique - no time changes since adopting standard time in 1903
- Myanmar - never did DST; last time change was in 1945, when they switched back from Japan Time after being liberated from Japan
- Namibia - 1st Sunday of September @ 2 AM WAT (1 AM UTC)
- Nauru - has been on "permanent" DST since 1979
- Nepal - never did DST; last time change was in 1986
- Netherlands - last Sunday of March @ 1 AM UTC (2 AM CET)
- New Caledonia - quit DST in 1997
- New Zealand - last Sunday of Sept. @ 2 AM NZST & 2:45 AM CHAST (2 PM UTC)
- Nicaragua - quit DST in 2006
- Niger - has been on "permanent" DST since 1960
- Nigeria - no time changes since adopting standard time in 1919
- Niue - never did DST; last time change was in 1978
- Norfolk Is. - never did DST; last time change was in 1951
- North Korea - never did DST; last time change was in 1961
- Northern Mariana Is. - never did DST; last time change was in 1969
- Norway - last Sunday of March @ 1 AM UTC (2 AM CET)
- Oman - never did DST; no time changes since adopting standard time in 1920
- Pakistan - quit DST in 2009
- Palau - never did DST; no time changes since adopting standard time in 1901
- Palestine - last Thursday of March @ 10 PM UTC (midnight EET)
- Panama - never did DST; last time change was in 1908
- Papua New Guinea - never did DST; last time change was in 1895
- Paraguay - 1st Sunday of October @ 4 AM UTC (midnight PYT)
- Peru - quit DST in 1994
- Philippines - quit DST in 1978
- Pitcairn Is. - never did DST; last time change was in 1998
- Poland - last Sunday of March @ 1 AM UTC (2 AM CET)
- Portugal - last Sunday of March @ 1 AM UTC (1 AM WET)
- Puerto Rico - quit DST in 1945
- Qatar - never did DST; last time change was in 1972
- Réunion - no time changes since adopting standard time in 1911
- Romania - last Sunday of March @ 1 AM UTC (3 AM EET)
- Russia - has been on "permanent" DST since 2011
- Rwanda - no time changes since adopting standard time in 1935
- St. Barthélemy - no time changes since adopting standard time in 1912
- St. Helena, Ascension & Tristan da Cunha - never did DST; last time change was in 1951
- St. Kitts & Nevis - no time changes since adopting standard time in 1912
- St. Lucia - no time changes since adopting standard time in 1912
- St.-Martin - no time changes since adopting standard time in 1912
- St.-Pierre & Miquelon - 2nd Sunday of March @ 2 AM PMST (5 AM UTC)
- St. Vincent & the Grenadines - never did DST; last time change was in 1912
- Samoa - last Sunday of September @ 3 AM WSST (Sat. @ 2 PM UTC)
- San Marino - last Sunday of March @ 1 AM UTC (2 AM CET)
- São Tomé and Príncipe - never did DST; last time change was in 1912
- Saudi Arabia - no time changes since adopting standard time in 1950
- Senegal - has been on "permanent" DST since 1941
- Serbia - last Sunday of March @ 1 AM UTC (2 AM CET)
- Seychelles - no time changes since adopting standard time in 1906
- Sierra Leone - quit DST in 1962
- Singapore - has been on "permanent" DST since 1936
- Sint Maarten - never did DST; last time change was in 1965
- Slovakia - last Sunday of March @ 1 AM UTC (2 AM CET)
- Slovenia - last Sunday of March @ 1 AM UTC (2 AM CET)
- Solomon Is. - no time changes since adopting standard time in 1912
- Somalia - never did DST; last time change was in 1957
- South Africa - quit DST in 1944
- South Korea - quit DST in 1988
- South Sudan - has been on "permanent" DST since 2000
- Spain - last Sunday of March @ 1 AM UTC (2 AM CET)
- Sri Lanka - quit DST in 2006
- Sudan - has been on "permanent" DST since 2000
- Suriname - never did DST; last time change was in 1984
- Svalbard & Jan Mayen - last Sunday of March @ 1 AM UTC (1 AM WET)
- Swaziland - no time changes since adopting standard time in 1903
- Sweden - last Sunday of March @ 1 AM UTC (2 AM CET)
- Switzerland - last Sunday of March @ 1 AM UTC (2 AM CET)
- Syria - last Friday of March @ 3 AM EET (1 AM UTC)
- Taiwan - quit DST in 1979
- Tajikistan - quit DST in 1991
- Tanzania - never did DST; last time change was in 1961
- Thailand - never did DST; last time change was in 1920
- Timor-Leste - never did DST; last time change was in 1920
- Togo - never did DST; no time changes since adopting standard time in 1893
- Tokelau - never did DST; last time change was in 2011 (actually the time stayed the same and the date changed)
- Tonga - quit DST in 2002
- Trinidad & Tobago - never did DST; no time changes since adopting standard time in 1912
- Tunisia - quit DST in 2008
- Turkey - in 2014, on Mon. 31 March @ 1 AM UTC (3 AM EET); normally, the last Sunday of March @ 1 AM UTC (3 AM EET)
- Turkmenistan - has been on "permanent" DST since 1992
- Turks & Caicos Is. - 2nd Sunday of March @ 2 AM EST (7 AM UTC)
- Tuvalu - never did DST; no time changes since adopting standard time in 1901
- Uganda - never did DST; last time change was in 1957
- Ukraine - last Sunday of March @ 1 AM UTC (3 AM EET)
- United Arab Emirates - no time changes since adopting standard time in 1920
- United Kingdom - last Sunday of March @ 1 AM UTC (1 AM GMT)
- United States - 2nd Sunday of March @ 2 AM EST, 2 AM CST, 2 AM MST, 2 AM PST, 2 AM AKST & 2 AM HAST (7 AM, 8 AM, 9 AM, 10 AM, 11 AM & noon UTC) - Some parts do not do DST.
- U. S. Virgin Islands - no time changes since adopting standard time in 1911
- Uruguay - 1st Sunday of October @ 2 AM UYT (5 AM UTC)
- Uzbekistan - quit DST in 1991
- Vanuatu - quit DST in 1993
- Vatican City - last Sunday of March @ 1 AM UTC (2 AM CET)
- Venezuela - never did DST; last time change was in 2007
- Viet Nam - never did DST; last time change was in1931
- Wallis & Futuna - no time changes since adopting standard time in 1901
- Western Sahara - last Sunday of March @ 2 AM WET (2 AM UTC) & the 1st day after Ramadan @ 2 AM WET (2 AM UTC)
- Yemen - no time changes since adopting standard time in 1950
- Zambia - no time changes since adopting standard time in 1903
- Zimbabwe - no time changes since adopting standard time in 1903
Why do people put their clocks back?
It is because in Scotland, the day ends before ours in England and Scotland does not want children to to school in the mornings when it is pitch black because you are less safe in the dark.
Daylight saving time doesnt save time it saves?
it saves sleep, we all need our rest, mhm,
No it doesn't if it is used as intended. The intention being to enjoy an extended afternoon and evening period and still get up earlier. This use means you get an hours less sleep which accumulates until you reach the following week-end when prudence insists you sleep the slumber of the sleep deprived.
What did the Daylight Saving Time law change in 2005?
In 2005, the Energy Policy Act extended Daylight Saving Time by four weeks, starting it on the second Sunday in March and ending it on the first Sunday in November. This change aimed to save energy by reducing the need for artificial lighting in the evenings.
Clocks in the US go back when?
For the 2010 Year:
This means that, on March 14, 2010, at 2:00 a.m. - you set the clocks ahead one hour. (Spring forward)
And on Sunday, November 7, 2010, at 2:00 a.m. - you set the clocks back an hour. (Fall back)
FYI...
In (2009), it was November 1st at 2am (so early Sunday morning).
When Daylight savings fall back happens would you be late or early the next day?
When Daylight Saving Time ends and the clocks are set back by one hour, you would technically gain an extra hour. This means you would be early if you followed the original time schedule, as you would have an extra hour before the agreed-upon time.
When do you change your clock?
Gennerally at 4am in the morning but most people dont tend to be awake at that time so either the night before or the night after. However take into considiration that if you have work the next day that you may want to change it the night before on a standard alarm clock just incase.Or people may change there clock when there is a mis haps and they dont have the time
Why do you change the hour back for daylight savings?
Changing the clock back for Daylight Saving Time allows for one full extra hr of light during the day when it would normally be dark.
There are many reasons to change the clock back:
More light =safety
When it's light outside you have less car accidents, burglaries, etc...
In addition , people are more productive with more light, darkness is depressing and has been proven to cause a decrease in productivity.
This was done to save candles before electricity.
When is daylight savings in Belgium?
Daylight saving time in Belgium begins on the last Sunday in March and ends on the last Sunday in October. During this period, clocks are set forward by one hour in the spring and set back by one hour in the fall.
October 31 now we have set your clocks back have you lost an hour?
It's because of daylight savings time. Each time, because it usually gets darker in the afternoon, people would have to set their clocks back, so that the working environment to the country can continue and be more precised.
Which states dont observe daylight savings time?
Australia: Queensland and Western Australia
Brazil: Acre, Alagoas, Amapa, Amazonas, Ceara, Maranhao, Para, Paraiba, Pernambuco, Piaui, Rio Grande do Norte, Rondonia, Roraima, Sergipe and Tocantins
Federated States of Micronesia: all
India: all
Malaysia: all
Mexico: Sonora
Myanmar: all
Nigeria: all
Sudan: all
United States of America: Hawaii and most of Arizona
Venezuela: all
Why do you have to wait until 2 o'clock to change the clock back or forward?
Of course you don't have to wait! You can do it when it is convenient to you. Most people do it before going to bed, that way the clocks are correct in the morning. The specific time is given for legal purposes and 24 hour groups, such as broadcasters and hospitals.
What is the difference between Daylight Saving Time in the UK and Daylight Saving Time in Singapore?
In the U.K. the time is set one hour ahead on the last Sunday of March and it is turned back an hour on the last Sunday of October. The last time change in Singapore was in 1982. They keep their clocks more than an hour ahead of Singapore Mean Time all the time.
When did the clocks first start going back?
Although many credit Englishman William Willet with inventing daylight savings time, it was first proposed by the New Zealand entomologist George Vernon Hudson.
Germany, its World War I allies, and their occupied zones were the first European nations to use Daylight Savings Time, starting April 30, 1916, as a way to conserve coal during wartime.
When do you turn your clocks back an hour in 2009?
This will depend on where you are in the world. Many areas moved their clocks backward somewhere between March and April, and have already moved them forward again. However, those regions that have not moved back for 2009 will have done so in October. Either way, you should have moved it back already.
When does daylight savings end in Canada in 2009?
NEW! In 2007 Daylight Saving Time begins on the second Sunday in March and ends on the first Sunday in November. This pattern will be followed by all provinces which observe daylight saving time and each province has amended their legislation to reflect this change. Previously, Canada had observed Daylight Saving Time from the first Sunday in April until the last Sunday in October.
This change in Daylight Saving Time will keep Canada's Daylight Saving Time pattern consistent with the United States which enacted into law a broad energy bill that will extend Daylight Saving Time in the same manner. Canada uses six primary time zones. From east to west they are Newfoundland Time Zone, Atlantic Time Zone, Eastern Time, Central Time Zone, Mountain Time Zone, and the Pacific Time Zone.
Year DST Begins at 2 a.m. DST Ends at 2 a.m. 2005 April 3 October 30 2006 April 2 October 29 2007 March 11 November 4 2008 March 9 November 2 2009 March 8 November 1 2010 March 14 November 7
Note: Newfoundland and Labrador Daylight Saving Time begins and ends one minute after midnight (12:01 a.m.) local time.
