Daylight Saving Time Looms: Americans Set Clocks An Hour Forward

Photo courtesy of CBS News .

Photo courtesy of CBS News .

Most Americans will set their clocks 60 minutes forward before heading to bed Saturday night, but daylight saving time officially starts Sunday at 2 a.m. local time (0700GMT).

An hour of sleep is lost, but daylight saving time arrives with the promise of many months ahead with an extra hour of evening light.

As CBS News’ Michelle Miller reported, there is no spring-forward in tropical Hawaii, nor in arid Arizona where the thought of scorching summer days ending at 9 p.m. got people hot and bothered. They also don’t set clocks ahead in the Hopi Nation, in northeast Arizona, but they do in the Navajo Nation, which completely surrounds it. Call it a “daylight saving donut.”

The time change is also not observed by Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.

It also means the United States is four hours behind Greenwich Mean Time instead of five.

Daylight saving time ends Nov. 2.

Michael Downing, the author of “Spring Forward,” says daylight saving time is a boon for retailers. Downing told CBS News last year: “If you give Americans daylight at the end of the work day, they’re more apt to shop on the way home.”

But they have less time to drink. In 1997, Ohio University students rioted after clocks were shifted ahead and bars were forced to close an hour early.

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