or day·light-sav·ings time
the civil time observed when daylight saving is adopted in a country or community.
‘Daylight Savings Time’ And More Commonly Mixed-Up Words
Every March and November, most Americans change their clocks to keep up with the switch into or out of daylight-saving time. This practice of advancing the clocks ahead an hour is called daylight-saving time. But, because daylight savings time is used so frequently, the term is also considered acceptable. Daylight saving time means that since the clock is moved ahead one hour, you get one …
Read more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of daylight-saving time
First recorded in 1905–10
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Time during which clocks are set one hour or more ahead of standard time to provide more daylight at the end of the working day during late spring, summer, and early fall. First proposed by Benjamin Franklin, daylight saving time was instituted in various countries during both world wars in the 20th century and was made permanent in most of the United States beginning in 1973. Arizona, Hawaii, most of eastern Indiana, and certain US territories and possessions do not observe daylight saving time.
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