The Daylight Saving Time Quiz

Estimated Completion Time
3 min
The Daylight Saving Time Quiz
Image: © Jens Büttner/dpa/Corbis

About This Quiz

Daylight saving time (DST) isn't just here to mess with your sleep patterns — it serves an actual purpose. How much do you know about DST? Find out by taking this quiz.
What is the correct terminology for DST?
daylight savings time
daylight saving time
The plural "savings" mistake is so common that more people actually search for the wrong term than the right one.
neither

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Who wrote a brochure called "The Waste of Daylight" in support of DST?
William Willett
Willett died just before his ideas about DST became reality.
Benjamin Franklin
Thomas Jefferson

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Which country did away with DST in 2011?
Spain
Russia
Russia eliminated it to reduce stress and illness in the country.
France

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How long did Russia follow DST until opting out in 2011?
8 years
22 years
30 years
After three decades the country decided to go old school.

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During World War I, which country was the first to use DST as a measure to conserve resources?
Germany
Germany was trying to conserve coal specifically.
England
United States

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What year was the Uniform Time Act passed in the United States?
1973
1966
The 1966 act (mostly) ended the confusion of tracking time in the postwar era.
1956

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During World War I, which country was the first to follow Germany's lead in adopting DST?
United States
France
Britain
Only a month after Germany did, Britain decided that DST might be an advantage for its wartime efforts, too.

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Which American president decried DST as a "deception," explaining that people should simply get up and go to work earlier during summer months?
Woodrow Wilson
Calvin Coolidge
Warren Harding
President Harding ordered employees in Washington to go to work at 8 a.m. instead of 9 a.m.

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After World War II, how long did it take for the U.S. to repeal DST?
three days
three weeks
It only took three weeks. People were ready to be done with "war time."
three months

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Which U.S. state does not observe DST?
Nevada
Utah
Arizona
Arizona tried DST for one year in the 1960s but negative backlash nixed it permanently.

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In 1965 St. Paul, Minnesota, was on Central Daylight Time while adjacent city Minneapolis, Minnesota, was still on Central Standard Time. How long did this time difference last?
two months
two days
two weeks
St. Paul, Minnesota, switched to DST two weeks ahead of state law. Chaos reigned in offices and homes for those weird weeks.

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George Hudson, who first conceived DST, was from which country?
New Zealand
Hudson was from New Zealand. He liked to collect bugs and needed more daylight to do so.
England
United States

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A 2009 study found that mine workers are how much more likely to experience accidents after the spring time change?
6 percent
Mine workers are 6 percent more likely to have accidents. The fact that less sleep equals more accidents is no surprise.
12 percent
20 percent

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What year did Indiana adopt DST?
1953
1977
2006
The Hoosier State was very late to the party, joining in 2006.

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Before the standardization of DST, states and localities could start and stop the practice whenever they wanted. At the low point of confusion, Iowa had how many different pairs of start/stop dates?
23
There were 23 pairs. The confusion would have been exasperating for people in the state.
13
six

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Which Canadian province does NOT adhere to DST?
Ontario
Saskatchewan
Saskatchewan is effectively on DST for the entire year.
Alberta

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Debilitating cluster headaches become more common in some people following which time change?
when DST begins
Reduced sleep and disruptions to the circadian rhythm are often blamed for the problem.
when DST ends
neither

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Driving is safer during daylight hours. Observing DST the entire year might reduce vehicle occupant fatalities by how much in the U.S.?
100
200
It might reduce vehicle occupant fatalities by 200 and spare the lives of 200 pedestrians.
500

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Some people say the increased level of recreational activity during DST also spikes a usage of what?
gasoline
This uptick in gasoline usage may offset any energy gains from using less residential electricity.
firewood
beach balls

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On the Monday following spring's DST change, people have more what?
broken limbs
aneurysms
heart attacks
People have more heart attacks. Some people speculate that less sleep negatively impacts our health, if only temporarily.

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Which of these pairs of cities opted to keep DST even after Congress repealed it in 1919?
Phoenix and Denver
New York and Chicago
New York and Dallas continued to practice DST. Other localities opted to make their own choices regarding DST, causing widespread confusion.
Los Angeles and Dallas

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The Energy Policy Act of 2005 extended DST by how many weeks?
two weeks
four weeks
It extended DST by four weeks and was signed into law by President George W. Bush.
six weeks

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Which hour does DST take effect in the U.S.?
2 a.m.
The 2 a.m. time change can get confusing if you're a night owl and awake during the time change.
3 a.m.
midnight

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Why don't countries near the equator follow DST?
Warmer weather means it doesn't matter when the sun rises and sets.
Their days are always the same length.
There's very little variation in their days no matter the time of year.
Politics in tropical regions are at odds with the theories behind DST.

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In North America what percentage of electricity goes to residential lighting?
4 percent
Four percent of electricity goes to residential lighting. Implementing DST helps countries scale back on the power needed for homes, if only by a tiny bit.
7 percent
12 percent

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The cost savings of reducing residential lighting is probably offset by increased usage of what?
refrigeration
heating
air conditioning
People are awake during hotter hours, meaning they need more cooling from their air-conditioning units.

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How many months each year does the United States operate under DST?
six
seven
eight
The U.S. is on DST for eight months each year, which makes standard time seem less than standard.

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On which continent do most countries NOT use DST?
Asia
Africa
Most countries in Africa don't use DST, but several countries in North Africa do.
South America

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In addition to Arizona, which other U.S. state does NOT follow DST?
Texas
Rhode Island
Hawaii
Hawaii and the U.S. territories (Guam, Puerto Rico, American Samoa, the Virgin Islands and Northern Mariana Islands) do not use DST.

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Which group lobbied against DST in 1918?
retail shops
farmers
It's a common myth that farmers are in favor of DST.
golf course owners

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You Got:
/30
© Jens Büttner/dpa/Corbis
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