Just in case you may have forgotten, tonight is the night most Americans will “spring forward”! ┬áDaylight Savings Time 2011 officially begins Sunday, March 13, at 2 a.m. local time.

You may want to turn in early as we’ll all be losing an hour of sleep tonight. Not everyone in the U.S. will be making the change, however, a folks in Arizona, Puerto Rico, the Virgin Islands, American Samoa, Guamm and the Northern Marianas do not observe Daylight Savings Time.

The rules for Daylight Savings Time changed back in 2007 for the first time in over 20 years. The new rules were brought about by the Energy Policy Act of 2005, which extended the length of Daylight Savings Time in the interest of reducing energy consumption.

The new rules increased the duration of Daylight Savings Time by about one month. DST will now be in effect for 238 days, or about 65 percent of the year, although Congress retained the right to revert to the prior law should the change prove unpopular or if energy savings are not significant. At present, Daylight Saving Time in the United States

  • begins at 2:00 a.m. on the second Sunday of March and
  • ends at 2:00 a.m. on the first Sunday of November

In 2011, DST is from 2:00 a.m. (local time) on March 13th until 2:00 a.m. (local time) on November 6th.

Your evenings will now be a little brighter, thanks to the big switch.