Daylight Saving Time Begins 2 a.m. on Sunday

Daylight saving time is scheduled for 2 a.m. on Sunday. We "spring ahead" the second Sunday in March, which is Mar. 13 this year. Daylight saving time ends the first Sunday in November. This year that's Nov. 6.

Did you know that not all states observe the time change? Hawaii, American Samoa, Arizona, Guam, the Northern Marianas, Puerto Rico and the Virgin Islands say no thank you.

We can thank Benjamin Franklin (Mr. Early to Bed and Early to Rise) as having credit for being the first person to suggest the concept of daylight savings, according to author David Prerau, who wrote the book "Seize the Daylight: the Curious and Contentious Story of Daylight Saving Time."

The National Institute of General Medical Sciences, a branch of the National Institutes of Health, says it's circadian rhythms determining sleep patterns that contribute to jet lag and are "responsible for that groggy feeling you may experience after 'springing ahead' for daylight saving time" Sunday  morning.

These roughly 24 hour cycles govern physical, mental and behavioral changes found in most organisms from fruit flies to humans.

However, the U.S. Department of Energy in a 2008 report to Congress said that springing forward does indeed save energy. Extended daylight saving time saved 1.3 terawatt hours of electricity, according to the DOE.

While some people argue that energy efficiency is not worth that groggy feeling, here in Alexandria it's time to change the clocks if you want to get to school, work or elsewhere on time.