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Do DOT's reasons for daylight saving time hold up?


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Washington Examiner

As the clocks fall back an hour this weekend, the biannual debate over the efficacy of changing clocks to prioritize evening light for half the year bursts back into life.

According to the Department of Transportation, which oversees national timekeeping, daylight saving time is observed between the second Sunday in March and the first Sunday in November for three reasons : to commute and run evening errands in the daylight, to save energy in the evening, and to prevent crime.


However, many experts disagree with and, in some cases, have debunked these explanations. Those who study the human circadian rhythm and how it relates to the movement of the sun especially argue for staying on standard time, which is observed during the winter months, all year.

“Most of the scientific data indicate that permanent Standard Time would result in improvements to health, safety and economics,” Erik Herzog, a chronobiologist at Washington University in St. Louis, told the Washington Examiner. He runs a laboratory that studies the underlying mechanisms that govern the circadian rhythm. He’s in good company advocating the end of DST, as there are dozens of scientific papers pointing out the harms of shifting the clock for half the year.:snip:

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