Daylight saving time begins at 2 a.m. Sunday
Sunday marks the start of daylight saving time, when clocks are turned forward one hour at 2 a.m.
The United States began observing daylight saving time during World War I, seeing it as a way to preserve energy. (More light in the evening means less electricity used.)
An added benefit is that the change allows many Americans to enjoy more sunshine during the warmer months.
Arizona and Hawaii do not observe the time change.
-- Monte Morin