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Daylight Saving Time


(Redirected from Daylight_saving_time)

Daylight Saving Time (DST) or Summer Time (ST) is a time to timekeep during summer. During the summer months, the sun stays visible for a longer time, and sunset happens late in the day. For this reason, certain countries advance the time by one hour near the start of summer, and put it back one hour during autumn.

DST helps stores that sell to people after they get off work, but it hurts farmers and others whose hours are set by the sun. It cuts traffic accident rates. Sometimes it can reduce energy costs, but it can also increase them.

Most of the world's countries do not use DST, but it is common in Europe and North America.

The United States, Australia, the United Kingdom, Canada and many other countries have DST. These countries also have regions that do not have DST:

Iceland, Russia, some parts of Ukraine and Belarus are countries in Europe without DST.

Contents

USA dates and UK dates


Since 1996 all clocks in the European Union, of which the UK is a member state, have changed on same dates and at the same time, 01:00 GMT.[1]

Permanent GMT+1


Permanent Summer Time has support in some northerly countries such as the UK. It was tried in the British Standard Time experiment, with Britain remaining on GMT+1 throughout the year. This took place between 27 October 1968 and 31 October 1971.

There are proposals for GST+1 in the winter, and double summer time (GST+2) in the winter. In favour are most city dwellers: children do not have to come home after school in the dark, and late afternoon and early evening activities benefit. In favour also were those concerned with accidents, because both accidents and fuel consumption go down.[2][3]

Against are many farmers in northerly latitudes, because sunrise would occur in winter at about 10:00 in the morning. However, in March 2010 the National Farmers Union said that it was not against Single/Double Summer Time, and is in fact relatively neutral, with many farmers expressing a preference for the change.[4]

Automatic adjustment


Most computers, mobile phones and other devices connected to the Internet will automatically adjust their clocks for DST. Some older computers will not adjust or will adjust the time incorrectly or on the wrong date. Also, computers with more than one operating system may be incorrectly adjusted twice or more when each operating system boots.

References


  1. British Summer Time , wwp.greenwichmeantime.com
  2. RoSPA suggests this would reduce the number of accidents over this period as a result of the lighter evenings. "Press Release October 22, 2008 It's Time for a Change to Save Lives and Reduce Injuries" . RoSPA Press Office."British Summer Time (BST)" . NMM – National Maritime Museum.
  3. Jha, Alok (29 March 2010). "Lighter Later Guardian Article" . The Guardian. London.
  4. "Should we change the clocks?" . National Farmers Union. 18 March 2010. Archived from the original on 30 March 2010. Retrieved 23 September 2015.

Other websites










Categories: Time zones








Information as of: 28.10.2020 08:39:52 CET

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