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  2. Daylight saving time ( DST ), also referred to as daylight saving (s), daylight savings time, daylight time (United States and Canada), or summer time ( United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer, so that darkness falls at a later clock time.

  3. History of DST in the United States. 1916–1966: Early, inconsistent use. 1967–1972: Federal standard established. 1973–1975: Year-round experiment. 1975–1986: Extension of daylight saving time. 2005–2009: Second extension. 2015–2024: Proposals for the introduction of year-round DST. Procedure for modifications. Changing an area's time zone.

  4. Apr 19, 2024 · The practice was first suggested in a whimsical essay by Benjamin Franklin in 1784. In 1907 an Englishman, William Willett, campaigned for setting the clock ahead by 80 minutes in four moves of 20 minutes each during April and the reverse in September.

    • Jonathan D. Betts
  5. Nov 4, 2022 · Anna Blazhuk/Getty Images. Millions of Americans want to abandon the time change we endure twice each year, disrupting our circadian rhythms and creating confusion. More than a third of U.S. states...

  6. Mar 6, 2014 · Learn how daylight saving time was invented by an entomologist in New Zealand and adopted by several countries during World Wars. Find out why it is still debated and how it affects energy use and schedules.

    • 1 min
  7. Learn how Daylight Saving Time (DST) was first used in Canada in 1908 and how it spread to other countries and regions. Find out the origins, inventors, and advantages of DST, as well as its challenges and controversies.

  8. Mar 16, 2022 · Learn how the U.S. experimented with year-round daylight saving time in the mid-1970s, when Americans faced the prospect of long, dark winter mornings and safety concerns. Find out why the switch was reversed in 1974 and what are the current debates over DST today.

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