Home > Time Zones > Daylight Saving Time > History of Daylight Saving Time - DST

History of Daylight Saving Time - DST

The concept of setting the clocks in order to make better use of natural daylight was first introduced by US inventor and politician Benjamin Franklin in 1784.

Business watch and one hundred dollar bill
Benjamin Franklin first introduced DST.
US founding father Benjamin Franklin first introduced the concept of DST.
©iStockphoto.com/Oleg Shipov

Daylight Saving Time (DST) is a change in the standard time with the purpose of making better use of daylight and concerving energy.

Clocks are generally set ahead one hour during DST aka Daylight Savings Time , meaning that the Sun rises one hour later in the morning and sets one hour later than it otherwise would have done. Although DST has only been used for about 100 years, the idea was conceived many years before.

Benjamin Franklin

Ancient civilizations are known to have engaged in a practice similar to modern DST where they would adjust their daily schedules to the Sun's schedule. For example, the Roman water clocks used different scales for different months of the Year.

American inventor and politician Benjamin Franklin is often credited with being the inventor of DST. In his 1784 essay “An Economical Project for Diminishing the Cost of Light” he proposed to economize the use of candles by getting people out of bed earlier in the morning to make use of the morning sunlight.

George Vernon Hudson

Another major contributor to the invention of DST was New Zealand entomologist George Vernon Hudson. In 1895, Hudson presented a paper to the Wellington Philosophical Society, proposing a two-hour shift forward in October and a two-hour shift back in March.

Seasons are opposite in the two hempsipheres

Hudson followed up his proposal with an article in 1898, and although there was interest in the idea, it was never followed through.

William Willett

Indepentently from Hudson, British builder William Willett proposed the introduction of DST in 1905. He suggested moving the clocks forward by 20 minutes on each of the four Sundays in April, and switching them back by the same amount on each of four Sundays in September, a total of eight DST switches per year.

Willett’s Daylight Saving plan caught the attention of Robert Pearce who introduced a bill to the House of Commons in February 1908. The first Daylight Saving Bill was drafted in 1909, presented to Parliament several times and examined by a select committee. However, the idea was opposed by many, especially farmers, and thus the bill was never made into a law. Willett died in 1915 without getting the chance to see his idea come to life.

DST first used in Europe

Germany was the first country to implement DST. Clocks there were first turned forward at 11:00 p.m. (23:00) on April 30, 1916.

DST history in Europe

The rationale was to minimize the use of artificial lighting in order to save fuel for the war effort during World War I. The idea was quickly followed by Britain and many other countries, including the United States. Many countries reverted back to standard time post-World War I. It wasn’t until the next World War that DST made its return in many countries in order to save vital energy resources for the war.

Franklin D. Roosevelt

US President Franklin D. Roosevelt instituted year-round DST in the United States, called “War Time” during World War II from February 9, 1942 to September 30, 1945. The change was implemented 40 days after the bombing of Pearl Harbor and during this time, the U.S. time zones were called “Eastern War Time”, “Central War Time”, and “Pacific War Time”. After the surrender of Japan in mid-August 1945, the time zones were relabeled “Peace Time”.

Britain applied “Double Summer Time” during World War II by moving the clocks two hours ahead of GMT during the summer and one hour ahead of GMT during the winter.

Modern DST in the US

In the United States, DST caused widespread confusion from 1945 to 1966 for trains, buses and the broadcasting industry because states and localities were free to choose when and if they would observe DST. Congress decided to end the confusion and establish the Uniform Time Act of 1966 that stated DST would begin on the last Sunday of April and end on the last Sunday of October. However, states still had the ability to be exempt from DST by passing a local ordinance.

The U.S. Congress extended DST to a period of ten months in 1974 and eight months in 1975, in hopes to save energy following the 1973 oil embargo. The trial period showed that DST saved the energy equivalent of 10,000 barrels of oil each day, but DST still proved to be controversial. Many complained that the dark winter mornings endangered the lives of children going to school. After the energy crisis was over in 1976, the U.S. changed their DST schedule again to begin on the last Sunday in April. DST was amended again to begin on the first Sunday in April in 1987. Further changes were made after the introduction of the Energy Policy Act of 2005.

Daylight Saving today

DST aka Daylight savings time is now in use in over 70 countries worldwide and affects over a billion people every year. The beginning and end dates vary from one country to another. The European Union adopted the “Summer Time” period that was used in the United Kingdom for many years, where DST begins on the last Sunday in March and ends on the last Sunday in October.

The DST schedule in the U.S. was revised several times throughout the years. From 1987 to 2006, the country observed DST for about seven months each year. The current schedule was introduced in 2007 and follows the Energy Policy Act of 2005, which extended the period by about one month. Today, DST starts on the second Sunday in March and ends on the first Sunday in November. Currently, most of the United States observes DST except for Hawaii and most of Arizona, as well as the U.S. insular areas of Puerto Rico, the US Virgin Islands, American Samoa, and Guam.

Topics: Time, Daylight Saving Time, History

In this Article

Advertising

DST Library

  1. History of DST
  2. History of DST in Europe
  3. Your health and DST
  4. Controversy of DST
  5. 1 hour back or forward?
  6. Summer or Winter Time?
  7. Savings or Saving?
  8. DST in the US changed in 2005

Daylight Saving Time


Daylight Saving Time worldwide

You might also like

UK on BST in the Summer

Contrary to ideas that the United Kingdom is on Greenwich Mean Time (GMT) all year, it actually observes British Summer Time (BST), which is one hour ahead of GMT, during the summer months. more

Most of Arizona Exempt from Daylight Saving Time

Arizona is an exception to the rule when it comes to daylight saving time in the United States. Most parts of the state, except the Navajo Nation community, observe Mountain Standard Time (MST) all year long. more