Spring Ahead an Hour — And Not a Second More (The Atlantic)

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This is your friendly reminder that daylight saving time (and not “daylight savings”) returns to most of the U.S. at 2 a.m. Sunday, March 9. We hope we save you from both arriving late for something and from the wrath of the grammar snob in your midst. You’re welcome.

And while we’re speaking of how the times are a-changin’, scientists who specialize in atomic clocks have long realized that the Earth’s rotation — and therefore, the length of a day — vary and may actually be slowing down slightly. Interestingly enough, atomic clocks reflect such variability, transitioning from 23:59:59 on some days, and 23:59:60 on others.

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