Clocks spring forward March 10
Daylight Savings Time - and the gradual return of longer days - begins again 2 a.m. Sunday, March 10, when most U.S. residents turn the clocks forward by an hour.
Many sources agree that the reasons for observing DST are rooted in efficiency and trying to make the most out of the warm seasons' long periods of daylight -- for farming, chores, work and saving money on electricity and fuel.
Arizona and Hawaii do not observe DST.
The Wisconsin Department of Agricultural, Trade and Consumer Protection suggests that people change the batteries in their smoke and/or carbon-monoxide detectors at the same time they change their clocks.
DST ends 2 a.m. Sunday, Nov. 3, 2013.