Reminder: fall back at 2 a.m.

The USC community is reminded to set all clocks back one hour for daylight saving time.

South Los Angeles and the rest of California will “fall back” one hour at 2 a.m. on Sunday when daylight saving time ends and Pacific Standard Time resumes.

Though many electronic devices adjust automatically, most appliances and other time-telling devices do not. In addition, many public officials recommend using this clock-changing time to also put new batteries in smoke alarms and to see if the detectors are in working order.

California is one of 48 states that observe daylight saving time, which was originally proposed to conserve some of the nation’s energy. Areas that do not spring forward and fall back include the states Arizona and Hawaii and the overseas territories Puerto Rico, American Samoa, Guam, the Northern Mariana Islands and the United States Virgin Islands.

Daylight saving time will return the second Sunday in March.

To read more about daylight saving time, check out: NBC’s science post, CNN’s health post and Venture Beat’s tech post. Or, just set the clocks back and get a head start on that extra hour.