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.
The plural "savings" mistake is so common that more people actually search for the wrong term than the right one.
Willett died just before his ideas about DST became reality.
Russia eliminated it to reduce stress and illness in the country.
After three decades the country decided to go old school.
Germany was trying to conserve coal specifically.
The 1966 act (mostly) ended the confusion of tracking time in the postwar era.
Only a month after Germany did, Britain decided that DST might be an advantage for its wartime efforts, too.
President Harding ordered employees in Washington to go to work at 8 a.m. instead of 9 a.m.
It only took three weeks. People were ready to be done with "war time."
Arizona tried DST for one year in the 1960s but negative backlash nixed it permanently.
St. Paul, Minnesota, switched to DST two weeks ahead of state law. Chaos reigned in offices and homes for those weird weeks.
Hudson was from New Zealand. He liked to collect bugs and needed more daylight to do so.
Mine workers are 6 percent more likely to have accidents. The fact that less sleep equals more accidents is no surprise.
The Hoosier State was very late to the party, joining in 2006.
There were 23 pairs. The confusion would have been exasperating for people in the state.
Saskatchewan is effectively on DST for the entire year.
Reduced sleep and disruptions to the circadian rhythm are often blamed for the problem.
It might reduce vehicle occupant fatalities by 200 and spare the lives of 200 pedestrians.
This uptick in gasoline usage may offset any energy gains from using less residential electricity.
People have more heart attacks. Some people speculate that less sleep negatively impacts our health, if only temporarily.
New York and Dallas continued to practice DST. Other localities opted to make their own choices regarding DST, causing widespread confusion.
It extended DST by four weeks and was signed into law by President George W. Bush.
The 2 a.m. time change can get confusing if you're a night owl and awake during the time change.
There's very little variation in their days no matter the time of year.
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.
People are awake during hotter hours, meaning they need more cooling from their air-conditioning units.
The U.S. is on DST for eight months each year, which makes standard time seem less than standard.
Most countries in Africa don't use DST, but several countries in North Africa do.
Hawaii and the U.S. territories (Guam, Puerto Rico, American Samoa, the Virgin Islands and Northern Mariana Islands) do not use DST.
It's a common myth that farmers are in favor of DST.