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  2. Daylight saving time in the United States - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_in...

    The Ohio Clock in the U.S. Capitol being turned forward for the country's first daylight saving time on March 31, 1918 by the Senate sergeant at arms Charles Higgins.. Most of the United States observes daylight saving time (DST), the practice of setting the clock forward by one hour when there is longer daylight during the day, so that evenings have more daylight and mornings have less.

  3. Daylight saving time - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time

    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.

  4. Daylight saving time in the Americas - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_in...

    Barbados in the western Atlantic no longer observes Daylight Saving Time, like many Caribbean nations. The last observance of a daylight saving-related time clock adjustment was between Sunday, 20 April 1980 at 02:00 and Thursday, 25 September 1980 at 02:00. On 25 September the clock was shifted from -3:00 to -4:00, where it has remained since.

  5. Daylight saving time by country - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_by...

    For example, in Canada and the United States, when DST starts, the local time changes from 02:00 to 03:00, and when DST ends, the local time changes from 02:00 to 01:00. As the time change depends on the time zone, it does not occur simultaneously in all parts of these countries.

  6. Permanent time observation in the United States - Wikipedia

    en.wikipedia.org/wiki/Permanent_time_observation...

    In 2019, the Washington State Legislature passed Substitute House Bill 1196, [59] which would establish year-round observation of daylight saving time contingent on the United States Congress amending federal law to authorize states to observe daylight saving time year-round. [60] Tennessee and Oregon also passed bills in 2019 for year-round ...

  7. Time in the United States - Wikipedia

    en.wikipedia.org/wiki/Time_in_the_United_States

    The portions of Indiana that were on Central Time observed daylight saving time. Some Indiana counties near Cincinnati and Louisville were on Eastern Time but did (unofficially) observe DST. The Energy Policy Act of 2005 extended daylight saving time (DST) for an additional month beginning in 2007.

  8. Uniform Time Act - Wikipedia

    en.wikipedia.org/wiki/Uniform_Time_Act

    The law, as originally written, required states that observe DST to begin it at 2 a.m. local time on the last Sunday in April, and to end it at 2 a.m. local time on the last Sunday in October and explicitly preempted all state laws related to daylight saving time per the weights and measures power given to Congress in Article 1, Section 8 of ...

  9. Daylight Saving Act of 1917 - Wikipedia

    en.wikipedia.org/wiki/Daylight_Saving_Act_of_1917

    The Daylight Saving Act of 1917 was enacted by the Dominion of Newfoundland to adopt daylight saving time (DST), thus making it one of the first jurisdictions in North America to do so, only a year after the United Kingdom on May 21, 1916. DST was not instituted in the United States until March 31, 1918.