What is Daylight Saving time?

Read Original Version (CLB5+) You are reading the Simple Version (CLB3-4)

Skip to:

Did you know?

  1. DST was practiced for the first time in Thunder Bay, Ontario Canada in July, 1908.
  2. Germany was the first to do it countrywide in 1916. It lessened the use of artificial lighting to save fuel for the war effort in World War I.
  3. Benjamin Franklin was an early advocate of DST.
  4. Ancient civilizations adjusted daily schedules based on the movements of the sun.

What is DST?

  • Daylight Saving Time is a way to save energy.
  • People advance clocks by an hour in springtime.
  • Energy is saved by starting our days earlier and using the available light.
  • DST is used in more than 70 countries worldwide.

When does DST start and end?

  • The start and end dates vary in different countries.
  • DST starts on the second Sunday in March in Canada. It ends on the first Sunday in November.
  • Some municipalities in Canada do not follow this schedule.
  • DST starts 2:00 a.m. Central Standard Time (CST) in Manitoba. Clocks are moved forward one hour.
  • Clocks are set back an hour at 2:00 am on the first Sunday of November.
  • Check DST schedules for Canada to know schedules in other provinces.

Facts related to DST:

  1. No savings?
    • The debate is still on about DST’s impact on energy use.
    • The US Department of Energy says that it only cuts 0.03 per cent of annual electricity use.
    • A study in California says that DST increased electricity consumption between 1 and 4 per cent.
    • The American Council for an Energy-Efficient Economy says that DST would cut carbon emissions by 10.8 million tonnes in the long run.
  2. No to DST
    • Majority of Saskatchewan, Southampton Island, regions in Quebec, and parts of northeastern British Columbia do not observe DST.
    • Manitoba and Ontario adopted DST in the fall of 2005. It was done for economic and social connection with the US. It is a major trading partner.
  3. Crimes down during DST
    • The U.S. Law Enforcement Assistance Administration found that crime goes down by 10-13 per cent during periods of DST.
  4. DST even without daylight
    • DST is observed in Antarctica.
    • There is no daylight in Antartica during winter. But months of 24-hour daylight is experienced in summer.
    • Research stations use DST to synchronize with supply stations in Chile or New Zealand.
  5. Time for change
    • Fire departments ask people to change batteries in their smoke detectors when DST starts.
    • DST has no connection to fires. It is just a good time to remind people.

Sources: Springing forward, falling back: the history of time change by CBC News Canada; The history of Daylight Saving Time, Time and date.com; Daylight Saving Time history and fun facts, Acurite.com,; Explained: 12 facts about Daylight Saving Time, Toronto Sun; 8 odd facts about daylight saving time, from the grapevine.com. Updated September 2021.

Back to top

We'd love to hear from you!

Please login to tell us what you think.

Related Learning Activities

What to do if you have a car accident in Manitoba

graphic of car collision at a stop

Having a car accident can be very distressing. Knowing exactly what to if this happens is of utmost importance. Attend… Read more »

WorkCom_Before you begin

A woman giving a presentation at work

Thinking about your knowledge and skills is an independent learning strategy. When you think about what you can do and what… Read more »

WorkCom_Week 4

A woman giving a presentation at work

This is our last week of Workplace Communications. This time you are in the driver’s seat. We look forward to your presentation… Read more »

WorkCom_Week 3

A woman giving a presentation at work

We have now reached week 3 of Workplace Communications! This week, we are engaging in a number of activities that allow… Read more »

Back to top

CC BY-NC-SAText of this page is licensed under CC BY-NC-SA, unless otherwise marked. Please attribute to English Online Inc. and link back to this page where possible. For images and videos, check the source for licensing information.