Set Your Clocks Forward For Daylight-Saving Time

LOS ANGELES (CBSLA.com) — For some, daylight-saving time is a minor annoyance. For others, it's a major inconvenience. Either way, this weekend marks the time to spring forward again.

Daylight-saving time kicks in Sunday when clocks should be pushed forward one hour at 2 a.m. The change allows for more daylight in the afternoon but means many will lose an hour of sleep.

Hawaii and Arizona, with the exception of the Navajo Nation, don't observe the time change.

The practice was first adopted in 1918 to help conserve the use of resources in the evenings. Present day, some experts say daylight-saving time gives retailers a boom in business.

"If you give Americans daylight at the end of the work day, they're more apt to shop on the way home," Michael Downing, author of "Spring Forward," told CBS News correspondent Michelle Miller.

Los Angeles County fire officials, however, say the practice marks a good time for residents to change the batteries in their smoke alarms and carbon monoxide detectors.

"Having a working smoke detector in your home clearly increases your chances of survival during a fire," Fire Captain Tom Richards said in a statement released Friday. "The device may alert members of your family while you are asleep, giving you the extra critical seconds for survival."

California now requires that carbon monoxide detectors be installed outside every sleeping area of traditional dwelling areas. Click here for more information.