Don’t schedule any important meetings for 2:30 a.m. on Sunday, because that time will not exist
A clock outside the Senate chambers. Nearly everyone in the United States will turn their clocks ahead one hour at 2 a.m. Sunday. By Matthew Cappucci March 8 at 12:17 PM Would you trade a one-time hour of sleep loss for an entire season of later sunsets? You won’t have much choice in the matter Saturday night. After four months, we’re set to return to daylight saving time.We lose an hour of sleep but only for one night. It’s just to shift us toward later sunsets until November.
The sun sets in Boston at 5:43 p.m. Saturday and 6:44 p.m. Sunday. Bostonians enjoy their first 7 p.m. sunset on March 24 — lagging two weeks behind the D.C. area and four days after the start of astronomical spring. After a winter of short days and cruel sunsets sometimes falling before 5 p.m., many in the Northeast and Mid-Atlantic yearn for the commencement of daylight saving time. It heralds the first noticeable step to springtime, with the weather eventually following suit and the days becoming longer. In fact, the days grow longer by a greater margin during the next two weeks than any point all year. Daylight is increasing by roughly 2½ minutes each day.
Near the poles, it’s a different story. Earth’s tilt means that regions in the Arctic or Antarctic can be facing away from the sun in the shadow of other parts of the globe for weeks or even months at a time. That’s the premise behind “polar night,” during which the sun plunges below the horizon around the start of winter and doesn’t emerge until spring approaches. Utqiagvik, Alaska — the northernmost town in the United States — is shrouded in inescapable darkness from Nov. 19 to Jan.
How can that be? After all, Miami’s average annual temperature is 27 degrees higher than Chicago’s. It has to do with sun angle. Every place on Earth gets the same number of hours of daylight if you added them up over a year. But not all sunlight is equal. Closer to the equator, it’s more direct. Near the poles, it comes in at a sharper angle, meaning the same beam of light has to warm a greater stretch of land — and the effective warming is less. That’s also why we have seasons.
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