The time shift started as a way to maximize limited daylight hours, but its benefits are debatable
Spring marks many changes: warmer weather, longer days, flowers peeping through the dirt. But for many people in the U.S., the approach of spring also means the start of daylight saving time.
This period, often incorrectly called daylight savings time, begins at 2:00 a.m. local time on the second Sunday in March, when clocks spring forward an hour—typically causing observers to lose an hour of sleep. Daylight saving time ends at 2:00 a.m. local time on the first Sunday in November, when clocks fall back by an hour and observers gain an hour of sleep.is to maximize sunlight in the Northern Hemisphere, as days start to lengthen in the spring and then wane in the fall.
Summertime marks the Northern Hemisphere's time to shine. It leans toward the sun, causing longer and warmer days. Meanwhile, the Southern Hemisphere is plunged into the short days of winter as it tilts away from the sun. Six months later, the situation reverses, and winter grips the North while light bathes the South.
When coal still ruled, daylight saving time was implemented as a way to maximize limited daylight hours. Because of this, a given region's participation depends, in part, on . Countries that are farther away have a more pronounced difference in day length between summer and winter and are more likely to participate in the time shift.
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