When do we change our clocks? Most of the United States begins Daylight Saving Time at 2:00 a.m. on the second Sunday in March and reverts to standard time on the first Sunday in November. In the U.S. each time zone switches at a different time.
A Safety Reminder! Many fire departments encourage people to change the batteries in their smoke detectors when they change their clocks because Daylight Saving Time provides a convenient reminder.
A working smoke detector more than doubles a person's chances of surviving a home fire. More than 90 percent of homes in the United States have smoke detectors, but one-third are estimated to have dead or missing batteries.