A traditional rite of spring, setting the clocks forward, comes early this year.

Most of the nation switches to daylight saving time early Sunday morning. The change comes a few weeks earlier than it used to, thanks to a change in the law. Daylight time will last until Nov. 4 this year.

It's also a good time to put new batteries in warning devices such as smoke detectors and hazard warning radios.

Some parts of the country don't observe daylight saving time. Those include Arizona, Hawaii, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.