Daylight-saving time ends at 2 a.m. on Sunday, November 3.

Brian Snyder/Reuters

Daylight-saving time in the US starts on Sunday, March 8, 2020 at 2 a.m.

That morning, most phones and computers will automatically tick forward one hour, and we’ll lose an hour of sleep.

The interruption can kill people: Incidents of heart attacks, strokes, and fatal car accidents all spike around the start of daylight-saving time each year.

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Daylight-saving time is a killer.

The annual ritual in which we “gain” an hour of evening light by pushing the clocks forward may seem like a harmless shift. But every year on the Monday after the springtime switch, hospitals report a 24% spike in heart-attack visits around the US.

Just a coincidence? Probably not. Doctors see an opposite trend

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