Daylight Saving Time in Canada. In most of Canada Daylight Saving Time begins at 2:00 a.m. local time on the second Sunday in March. On the first Sunday in November areas on Daylight Saving Time return to Standard Time at 2:00 a.m. local time. When Daylight Saving Time begins turn your clocks ahead one hour. At the end of Daylight Saving Time turn your clocks back one hour. Time zone names and abbreviations in Canada change during Daylight Saving Time. Eastern Standard Time (EST) becomes Eastern Daylight Time (EDT), and so forth with each time zone.
http://www.timetemperature.com/canada/daylight_saving_time_canada.shtml
Daylight saving time (DST) or summer time is the practice of advancing clocks during summer months by one hour so that in the evening daylight is experienced an hour longer, while sacrificing normal sunrise times.
https://en.wikipedia.org/wiki/Daylight_saving_time
As of 2007, daylight time begins in the United States on the second Sunday in March and ends on the first Sunday in November. On the second Sunday in March, clocks are set ahead one hour at 2:00 a.m. local standard time (which becomes 3:00 a.m. local daylight time). On the first Sunday in November, clocks are set back one hour at 2:00 a.m. local daylight time (which becomes 1:00 a.m. local standard time). These dates were established by Congress in the Energy Policy Act of 2005, Pub. L. no. 109-58, 119 Stat 594 (2005) .
http://aa.usno.navy.mil/faq/docs/daylight_time.php
New Zealander George Hudson proposed the modern idea of daylight saving in 1895. Germany and Austria-Hungary organized the first implementation, starting on 30 April 1916. Many countries have used it at various times since then, particularly since the energy crisis of the 1970s.
https://en.wikipedia.org/wiki/Daylight_saving_time
Daylight Saving Time (DST) is the practice of setting the clocks forward one hour from Standard Time during the summer months, and back again in the fall, in order to make better use of natural daylight. The sculpture Six Public Clocks by Konstantin Grcic.
http://www.timeanddate.com/time/dst/
Not all places in the U.S. observe daylight time. In particular, Hawaii and most of Arizona do not use it. The most recent change to local daylight time policy was in 2006, when Indiana adopted the use of daylight time state-wide.
http://aa.usno.navy.mil/faq/docs/daylight_time.php
As explained by Richard Meade in the English Journal of the (American) National Council of Teachers of English, the form daylight savings time (with an s) was already in 1978 much more common than the older form daylight saving time in American English (the change has been virtually accomplished).
https://en.wikipedia.org/wiki/Daylight_saving_time
Facts: Sunday, November 1, 2015 - Daylight Saving Time ends at 2am. Set clocks back one hour. Sunday, March 13, 2016 - Daylight Saving Time begins at 2am. Set clocks ahead one hour. It is Daylight Saving Time (singular), not Daylight Savings Time (plural). Beginning in 2007, Daylight Saving Time starts in the United States on the second Sunday in March and ends on the first Sunday in November. Read More. Timeline: 1784 - The idea of daylight saving is first conceived by Benjamin Franklin. 1914-1918 - Britain goes on DLS during World War I.
http://www.cnn.com/2013/08/22/world/daylight-saving-time-fast-facts/index.html
In Britain, Willett's 1907 proposal used the term daylight saving, but by 1911 the term summer time replaced daylight saving time in draft legislation.
https://en.wikipedia.org/wiki/Daylight_saving_time
While the times of sunrise and sunset change at roughly equal rates as the seasons change, proponents of Daylight Saving Time argue that most people prefer a greater increase in daylight hours after the typical  nine-to-five  workday.
https://en.wikipedia.org/wiki/Daylight_saving_time
when is the daylight savings time change
The daylight savings time change at 2:00 a.m.