Daylight Savings Time: Clocks Spring Forward an Hour Sunday, March 13

Adjust your clocks -- and your bodies -- accordingly.

Most of the U.S. switches over to Daylight Savings Time this weekend, moving clocks ahead one hour in order to get an extra hour of sunlight in the evening.

Though the official change is at 2 a.m. local time on Sunday, March 13, nobody will notice if you wind your clocks ahead a little earlier in the evening.

Oddly enough, not everyone in the U.S. makes the change from Standard Time. The areas that don't are Hawaii, most of Arizona, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.

If you're wondering when you'll get that hour back -- when clocks return from 2 a.m. to 1 a.m. -- it won't be until Nov. 6. That's the official fall-back-to-Standard-Time date. Too far away to think about.