Daylight saving time is also called summer time or daylight savings time. When DST is not observed, it is called standard time, normal time or winter time. Daylight Saving Time – often referred to as "Summer Time", "DST" or "Daylight Savings Time" – is a way of making better use of the daylight in the evenings by setting the clocks forward one hour during the longer days of summer, and back again in the fall. Daylight saving time in the United States was first observed in 1918. Most areas of the United States currently observe daylight saving time, with the exceptions being the states of Arizona and Hawaii along with the overseas territories of Puerto Rico, American Samoa, Guam, Northern Mariana Islands, and the United States Virgin Islands.
|Year||DST Begins 2 a.m.
|DST Ends 2 a.m.
|2007||11 March 2007||4 November 2007|
|2008||9 March 2008||2 November 2008|
|2009||8 March 2009||1 November 2009|
|2010||14 March 2010||7 November 2010|
|2011||13 March 2011||6 November 2011|
|2012||11 March 2012||4 November 2012|
|2013||10 March 2013||3 November 2013|
|2014||9 March 2014||2 November 2014|
|2015||8 March 2015||1 November 2015|