Clocks will spring ahead one hour Sunday as daylight saving time begins across much of the United States.

The change takes effect at 2 a.m. Sunday, when clocks jump from 2 a.m. to 3 a.m., putting Santa Barbara County one hour ahead of standard time.

The shift means later sunrises and sunsets in the weeks ahead. In Santa Barbara, sunrise will be at 7:18 a.m. Sunday and sunset at 7 p.m., with times varying by a few minutes across the county.

Most smartphones and newer digital devices will update automatically the time, but some clocks, including wall clocks, microwaves and some older vehicles, may require a manual adjustment. To avoid any mix-ups, clocks can be set ahead one hour before going to bed Saturday night.

Fire officials recommend using the time change as a reminder to check or replace batteries in smoke alarms and carbon monoxide alarms.

The twice-yearly time change is governed by the federal Uniform Time Act of 1966. While most states observe daylight saving time, Hawaii, most of Arizona and several U.S. territories do not.

Daylight saving time will end on Sunday, Nov. 1 at 2 a.m., when clocks fall back one hour to standard time.