Get ready to set your clocks back this weekend. Daylight Saving Time ends at 2 a.m. Sunday..
Remember, you'll "fall back" and set your clocks back one hour, meaning an extra hour of sleep for some. Many electronic devices, like cell phones and computers, automatically adjust when Daylight Saving Time begins or ends.
When you change your clocks in the fall and spring, it's also a good time to change smoke detector batteries.
Arizona, Puerto Rico, Hawaii, U.S. Virgin Islands and American Samoa do not observe Daylight Saving Time.
It begins again on March 10, 2013, when it's time to "spring forward."
