Daylight Saving Time 2012 begins Sunday morning

(Photo: Flickr/Simon Shek)

(AP/ABC7) - Most Americans got an hour less sleep Saturday night, but will gain an hour more of daylight Sunday.

Daylight Saving Time began Sunday at 2 a.m. That's when clocks should be set ahead one hour.

The time change applies to everyone in the U.S., except those in Hawaii, Arizona outside Navajo territory, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas. All of those places stay on standard time, which returns for the rest of us Nov. 4, two days before election time.

The modern version of Daylight Saving Time was proposed by George Vernon Hudson, a New Zealand entomologist. The practice was then adopted by numerous countries worldwide during World War I.