Most of us will set our clocks 60 minutes ahead before heading to bed tonight, but daylight saving time officially starts Sunday at 2 a.m.
You lose an hour of sleep, but daylight saving time arrives with the promise of many months ahead with an extra hour of evening light.
It's also a good time to put new batteries in warning devices such as smoke detectors and hazard warning radios.
The time change is not observed by Hawaii, most of Arizona, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.
Daylight saving time ends Nov. 2.
National Institute of Standards and Technology: http://tinyurl.com/6968kha