A 1995 study in the American Journal of Public Health found that there are fewer fatal crashes during DST. More recently, a 2007 study by the RAND Corporation analyzed decades of crash data and found that DST reduces accidents significantly.
It saves energy, because people don't use their lights as much in the evening. Back when lights were the main use of energy, I think this was a bigger justification. It reduces accidents, because people are less likely to be driving in the dark. Hm.
Daylight Saving Time (DST) Is Bad for Your Health.
Changing sleep patterns, even by one hour, goes against a person's natural circadian rhythms and has negative consequences for health. [1] One study found that the risk of a heart attack increases 10% the Monday and Tuesday following…
There are individual health concerns, too: switching to Daylight Saving Time is associated with cardiovascular morbidity, a higher risk of a heart attack or stroke, and an increase in hospital admissions for irregular heartbeats, for example.
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All states but Hawaii and Arizona (except for the Navajo Nation) observe DST. The territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands also do not observe DST.
Daylight saving time then ends on the first Sunday in November, when clocks are moved back an hour at 2 a.m. local daylight time (so they will then read 1 a.m. local standard time). In 2021, DST begins on March 14 and ends on Nov. 7 in the U.S., when you'll set the clock back an hour and the cycle will begin again.
That means you need to move your clocks ahead one hour at 2 a.m. this Sunday, March 8, 2020 -- many people change their clocks the night before -- and we “lose” an hour of sleep as we spring forward. Daylight saving time will end on the first Sunday of November, which is Nov. 1 this year.
In 1895, George Hudson, an entomologist from New Zealand, came up with the modern concept of daylight saving time. He proposed a two-hour time shift so he'd have more after-work hours of sunshine to go bug hunting in the summer.
In California, for example, voters back in 2018 overwhelmingly passed Proposition 7 in an effort to establish year-round daylight saving time. Since then, however, legislation seeking federal authorization to do so has stalled in the legislature. ... The legislation would put an end to the practice of daylight saving time.
That can be good; for example, one study found slightly lower incidence of heart attacks the Monday after daylight saving ends. ... Unfortunately, gaining an hour now means losing an hour in the spring.
In March 2021, a bipartisan bill called the “Sunshine Protection Act of 2021” was submitted for consideration in the U.S. Senate. The bill aims to end the time change and make DST permanent across the United States.
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