So people go to bed later in the western edge of the timezone than the eastern edge. It’s also 6pm in western Kansas, almost 1000 miles away, but the sun will not go down for another hour. It’s 6pm, and the sun has gone down in the middle of Kentucky. If they both go to bed 4 hours after the sun goes down, their clocks will say that the person in Eastern Time went to bed one hour later than the person in Central Time.Ģ. Imagine two people in Kentucky, very close to each other but on opposites sides of the time zone border. The average difference in bedtime across the time zone border is 16 min…, and some places it’s as high as 30 minutes. Here’s how Jawbone described it on its blog: The circadian rhythm phenomenon on display here seems simple enough and shows how our biological clocks respond to natural daylight over the more arbitrary arms of a clock. Unsurprisingly, there are some drastic bedtime differences along the time zone borders, most dramatically seen in Kentucky. to show the average times Americans hit the sack. That effect is repeated across the United States as zigzagging time zones slice the country into pieces.ĭata scientists at health-tech company Jawbone have taken data from its users and mapped it county-by-county across the U.S. That’s an extra hour of sunlight between the eastern and western edges of the Eastern Standard Time zone. In Louisville, the sun sets tonight at 5:40p.m. Where I live in Brooklyn, the sun will set today at the depressingly early time of 4:45p.m.
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