LOS ANGELES (CBS) — This weekend marks the end of daylight saving time which will mean an extra hour of sleep for most.

Pick-A-Side: Spring Forward Or Fall Back?

Like 47 other states, California will “fall back” one hour at 2 a.m. Sunday when daylight saving time ends and the state reverts to Pacific Standard Time.

Public safety officials are using the semi-annual clock changing exercise as an opportunity to remind people to change their batteries in smoke and carbon monoxide detectors, as well as flashlights.

Daylight saving time was adopted by the United States in 1918, partly as a way to cut down on energy use in the evenings. Hawaii and most of Arizona do not observe daylight saving time.

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