Daylight saving time in the United States
Daylight saving time in the United States is the practice of setting the clock forward by one hour when there is longer daylight during day. In the U.S. daylight saving time starts on the second Sunday in March and ends on the first Sunday in November, with the time changes taking place at 2: 00 a.m. local time. Benjamin Franklin proposed a form of daylight time in 1784.
About Daylight saving time in the United States in brief
Daylight saving time in the United States is the practice of setting the clock forward by one hour when there is longer daylight during day. In the U.S. daylight saving time starts on the second Sunday in March and ends on the first Sunday in November, with the time changes taking place at 2: 00 a.m. local time. Benjamin Franklin proposed a form of daylight time in 1784. During World War I, in an effort to conserve fuel, Germany began observing DST on May 1, 1916. The plan was not adopted in the US until the Standard Time Act of March 19, 1918, which set summer DST to begin on March 31, 1918. DST was abolished after the war, overriding President Woodrow Wilson’s veto. After 1945 many states and cities east of the Mississippi River adoptedSummer DST. From 1945 to 1966 there was no federal law on daylight Saving time, so localities could choose when it began and ended or drop it entirely. In 1962, the transportation industry found the lack of consistency enough to push for federal regulation. In 1967, the Uniform Time Act mandated standard time within the established time zones and provided an advanced one hour beginning for time: the last Sunday in April. In 1972, Arizona and Michigan became the first states to exempt themselves from DST as long as the entire state did so. The act also required states that used daylight saving to start and end on the established dates to start it on the last weekend in April in 1966 and it to end in October in October of that year.
In 2012, the act was amended to require states to use daylight saving on the final Sunday of the month of November, and it was also required that states use it on every other Sunday in October. In 2013, the Act was amended again to require the states to observe daylight saving as the last week of October in 2012 and it began on November 1, 2013. In 2014, the law was changed again so that states can choose when they observe DST, and they can do so on any day of the year. It was also changed to require that states that use DST in the spring and fall to set their clocks back an hour rather than moving them forward in the fall. In 2015, the laws were changed so that the clocks are moved back one hour in spring and one hour back in fall, and that they are set to set them back again in the winter, and so that they don’t set the clocks back in the summer. This year’s DST is set to start on March 14, 2015. The last Sunday of March is DST’s last Sunday, April 14, 2016. The exceptions are Arizona, Hawaii, and the overseas territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and United States Virgin Islands. The DST lasts for a total of 34 weeks every year, about 65% of the entire year. The following table lists recent past and near future starting and ending dates of daylight saving in North America.
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This page is based on the article Daylight saving time in the United States published in Wikipedia (as of Nov. 13, 2020) and was automatically summarized using artificial intelligence.
