"Spring Forward, Fall Back." Daylight savings time starts Sunday March 10 in the United States at 2 a.m. Clocks should be moved forward one hour. (See U.K. Daylight Savings Time Below)

While the clocks' changes will bring an hour less of sleep, some celebrities looked at the bright side of the new daylight time.

"The bright side of daylight savings time is my baby will be getting up at 5:30 am instead of 4:30 am," wrote Sports Illustrated swimsuit model Marisa Miller on Twitter today.

Other celebrities however, seem to not get adjusted to it.

"Does anyone else find daylight savings to be a disorienting and tragic reminder of the arbitrary nature of human existence? No, just me?" "Girls" actress Lena Dunham wrote on Twitter.

Daylight saving time officially ends on the first Sunday of November, which this year, falls on Nov. 3.

Daylight Saving Time is not observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, and by most of Arizona (with the exception of the Navajo Indian Reservation in Arizona), according to the Department of Energy's policy.

The start and stop dates were set in the Energy Policy Act of 2005.

In the United Kingdom, Daylight Savings time starts Sunday March 31st, 2013 at 2 a.m., according to Timeanddate.com.

Watch the Video Below that Explains how Daylight Saving Time works:

Daylight Saving Time Saves Energy?

Daylight Saving Time is being associated with energy savings, the later it gets dark the less electricity we use. It "makes" the sun "set" one hour later and therefore reduces the period between sunset and bedtime by one hour meaning that less electricity would be used for lighting and appliances late in the day, according to California's Energy Department.

People may use a bit more electricity in the morning because it is darker but energy savings in the evening are believed to make up for that usage.

However, for this season of the year (November, December, January and February) considered as the darkest months of the year, Daylight Saving Time does not save that much energy because the sun comes out later and it sets sooner so there is need for more electricity in both.