What Is Daylight Saving Time (DST)

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Daylight Saving Time (DST), also called Summer Time, is to move the clock forward by one, 1, hour during the summer time so that afternoons have more daylight. The main reason of using DST is to give longer afternoons benefiting sports, stores, restaurants, other activities after working hours.

Map of DST Countries and Regions

The following map shows which countries and regions are using Daylight Saving Time (DST): ( DST still in use; DST used in the past; DST never used)

Daylight Saving Time (DST) Map
Daylight Saving Time (DST) Map

DST used in United States and Canada

In United States and Canada, the following Daylight Saving Time (DST) rule is used since 2007:

  • DST starts on the second Sunday of March and ends on the first Sunday of November.
  • At 2 a.m. local time on the second Sunday in March, clocks are forward one hour ahead of Standard Time. This is called "Spring Forward".
  • At 2 a.m. local time on the first Sunday in November, clocks are set back one hour to return to Standard Time. This is called "Fall Back".

Here are DST starting and ending dates for different years in United States and Canada:

  • Year 2011: DST starts on March 13, 2011 and ends on November 6, 2011.
  • Year 2012: DST starts on March 11, 2012 and ends on November 4, 2012.
  • Year 2013: DST starts on March 10, 2013 and ends on November 3, 2013.
  • Year 2014: DST starts on March 9, 2014 and ends on November 2, 2014.
  • Year 2015: DST starts on March 6, 2015 and ends on November 1, 2015.
  • Year 2016: DST starts on March 13, 2016 and ends on November 6, 2016.

DST used in European Countries

In European Community, the following Daylight Saving Time (DST) rule is used since 1998:

  • DST starts on the last Sunday of March and ends on the last Sunday in October.
  • At 01:00 UTC time on the last Sunday in March, clocks are forward one hour ahead of Standard Time. This is called "Spring Forward".
  • At 01:00 UTC time on the last Sunday in October, clocks are set back one hour to return to Standard Time. This is called "Fall Back".

Here are DST starting and ending dates for different years in European Community:

  • Year 2011: DST starts on March 27, 2011 and ends on October 30, 2011.
  • Year 2012: DST starts on March 25, 2012 and ends on October 28, 2012.
  • Year 2013: DST starts on March 31, 2013 and ends on October 27, 2013.
  • Year 2014: DST starts on March 30, 2014 and ends on October 26, 2014.
  • Year 2015: DST starts on March 29, 2015 and ends on October 25, 2015.
  • Year 2016: DST starts on March 27, 2016 and ends on October 30, 2016.

 

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