This is the part of Daylight Saving Time most of us like — the night we get an extra hour of sleep.
Instead of "springing forward" we'll be "falling backward," which means that before you go to bed on Saturday night, don't forget to turn your clocks back one hour. Digital devices like phones, tablets, laptops and personal robots should automatically reset their clocks.
The time change officially takes effect at 2 a.m. Sunday morning.
Fire officials also say this is a good time to check the smoke alarms and carbon monoxide detectors in your home. Brian Humphrey with the Los Angeles Fire Department says smoke alarms have a maximum lifespan of 10 years.
"If your smoke alarm was installed prior to 2006, it's not only time to test or change the batteries, it's time for you to replace that alarm," Humphrey tells KPCC.
With the exception of Hawaii and a large swath of Arizona, most areas of the United States observe daylight saving time.