
Daylight saving time - Wikipedia
The standard implementation of DST is to set clocks forward by one hour in spring or late winter, and to set clocks back by one hour to standard time in the autumn (or fall in North American …
Why does the US have daylight saving time? | USAFacts
Feb 26, 2025 · Daylight saving time was originally implemented over 100 years ago, in 1918 during World War I to help conserve fuel and power and extend the workday. Working during …
Daylight Saving Time | When, Definition, History, & Facts
Nov 8, 2025 · In the spring months, clocks are moved up one hour for Daylight Saving Time (DST). In the fall, clocks are moved back one hour. This gave rise to the phrase “spring …
What Is Daylight Savings Time (DST)? - timeanddate.com
Sep 11, 2025 · Daylight Saving Time (DST) is the practice of setting the clocks forward during part of the year to make better use of natural daylight. DST is usually one hour ahead of …
What Is Daylight Saving Time & When We Change the Clocks …
Oct 29, 2025 · Daylight saving time, also known as DST, is a practice where we advance the clocks by one hour on the second Sunday of March and set them back by one hour on the first …
Daylight Saving Time Rules | NIST
Mar 2, 2010 · Daylight saving time, or DST, is the period of the year when clocks are moved one hour ahead. In the United States, this has the effect of creating more sunlit hours in the …
Understanding Daylight Saving Time Changes | TimeZoneLocator
Daylight Saving Time is a practice where clocks are set forward by one hour during warmer months (typically spring and summer) to extend evening daylight, then set back in the fall to …
How does daylight saving time work, and who created it? See
Daylight saving time (DST) claims a variety of other names: daylight savings time, daylight time, summer time (not to be confused with summertime). It refers to the practice of setting clocks...
Daylight Saving Time (DST) in USA and Canada
Nov 2, 2025 · Check date and time for current year's clock changes in North America (United States, Canada and parts of Mexico). Daylight Saving Time (DST) rules. Past and future DST …
Daylight Savings Time in 2025. When it ends, returns
Oct 17, 2025 · Daylight Saving Time will soon come to a close for 2025. Prepare to turn your clocks back an hour Nov. 2.