In compliance with the Federal Energy Policy Act of 2005, most of the United States will end daylight saving time by reverting to standard time on Sunday, Nov. 1, at 2 a.m.
The revised regulation stipulates that U.S. states or territories that observe daylight saving time must switch back to standard time on the first Sunday of November. Hawaii, most of Arizona, Puerto Rico, American Samoa and the U.S. Virgin Islands do not observe daylight saving time.
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Idaho residents are reminded to set their clocks back one hour before they go to bed Saturday night.
Though daylight saving time was formally adopted in 1918, observing it did not begin in earnest until 1966. Most other countries also use daylight saving time. Japan, India and China, however, do not.