Few American traditions are as quietly disruptive as the twice-yearly ritual of changing the clocks. Every March, we spring forward and lose an hour of sleep. Every November, we fall back and gain a small gift of evening darkness. The history of daylight saving time in the United States is longer, stranger, and more political than most people realize. It begins with a satirical letter from Benjamin Franklin, gets weaponized in two world wars, fails spectacularly in 1974, and still triggers heated debate in 2026 Congress.
I’ve spent the last few weeks digging through the US Naval Observatory’s records, the Bureau of Transportation Statistics archives, and Congressional hearing transcripts to put together this timeline. What I found challenged some of the things I thought I knew, including the popular claim that daylight saving time exists to help farmers. It does not. More on that myth later.
Here is the full story, from 1784 to 2026.
Table of Contents
How daylight saving time began as a joke before becoming law
The story of daylight saving time does not start with a serious lawmaker. It starts with a printer, a candle, and a bit of humor.
In 1784, Benjamin Franklin was serving as a diplomat in Paris. Writing anonymously under the pseudonym “An Economical Project,” he submitted a satirical letter to the Journal of Paris. In it, Franklin complained that Parisians were burning expensive candles by staying up late. He proposed that they be awakened by the sound of cannons and churches ringing their bells at sunrise. Then they would use the morning sun instead of artificial light and save money. The essay was a joke about Parisian habits, but it is often cited as the first public suggestion to align waking hours with daylight.
The real push for daylight saving time came more than a century later from two men on opposite sides of the world.
George Vernon Hudson, a New Zealand entomologist, proposed the modern version of DST in 1895. Hudson wanted more evening daylight to collect insects after his day job at the Wellington Post Office. He presented his idea to the Wellington Philosophical Society, and his proposal was published in 1895, but it went nowhere in New Zealand politics.
William Willett, a British builder and outdoorsman, independently hit on the same idea in 1905. He was annoyed that so many Londoners slept through the early morning sun. In 1907, he published the pamphlet “The Waste of Daylight” and began lobbying Parliament to advance clocks by 80 minutes in four incremental steps during the spring. Willett spent the rest of his life campaigning for the change. He died in 1915, just three years before his idea was finally adopted in the country where he had championed it.
None of these early figures lived in the United States, but the American debate picked up their ideas once the world went to war.
Why the United States adopted daylight saving time in 1918
Daylight saving time arrived in the United States not as a lifestyle choice but as a wartime rationing tool. By 1917, the United States had entered World War I, and the federal government was scrambling to conserve every drop of fuel.
On March 19, 1918, Congress passed the Standard Time Act, and President Woodrow Wilson signed it into law. The act had two parts. First, it established five standard time zones across the continental United States, replacing the confusing patchwork of 300-plus local times that railroads had been navigating. Second, it imposed daylight saving time nationwide, advancing clocks by one hour during the warmer months to reduce the demand for artificial lighting and fuel.
America’s first DST clock change took effect on March 31, 1918. Clocks sprang forward one hour, and they fell back on October 27, 1918, ending the experiment. Congress repealed the daylight saving portion of the Standard Time Act just seven months later, on August 20, 1919, after the war ended and the public complained about the change. The time zones, however, stuck.
How patchwork daylight saving laws created confusion from 1920 to 1941
After the repeal of national daylight saving time in 1919, the United States reverted to a free-for-all. States, counties, and even individual cities made their own rules. Some observed DST. Some did not. Some started it on different dates.
Massachusetts and Rhode Island briefly adopted statewide daylight saving time in 1920, only to repeal it the next year. New York City observed it for stretches when New Jersey did not, creating a 15-minute time difference across the Hudson River. For two decades, travelers could cross state lines and lose or gain an hour without warning.
The Bureau of Transportation Statistics, which now maintains the official time zone map, traces this period as one of the most confusing in American timekeeping. A 1931 study found that cities using daylight saving time used about 1 percent less electricity than cities that did not, but the patchwork made national coordination impossible.
When the US went to year-round daylight saving time for World War II
World War II brought daylight saving time back, and this time the government did not want to risk confusion at home while sending soldiers overseas.
On February 9, 1942, President Franklin D. Roosevelt instituted “War Time” by executive order. The entire country moved to year-round daylight saving time. There would be no fall back, no spring forward, and no patchwork of state rules. The whole nation was on the same clock, and the clock was one hour ahead of standard time for the entire war.
Year-round War Time lasted from February 9, 1942 to September 30, 1945, just days after Japan’s formal surrender aboard the USS Missouri. When the war ended, so did the unified time. Americans went back to standard time on September 30, 1945, and the country returned to its messy, decentralized system.
Why the Uniform Time Act of 1966 finally standardized the clocks
Twenty-one years of confusion came to an end in 1966, when President Lyndon B. Johnson signed the Uniform Time Act into law on April 13.
The Uniform Time Act did not force every state to observe daylight saving time. Instead, it created a single federal rule that would apply to any state that chose to participate. From April 1, 1967 onward, participating states would advance their clocks by one hour on the last Sunday of April and turn them back on the last Sunday of October. States that already had statewide DST laws in effect when the act passed were grandfathered in, which is why some odd variations lingered for years.
The act placed the entire system under the authority of the Department of Transportation, which still oversees time zone boundaries today. The DOT’s job is to make sure interstate commerce, broadcasting, and transportation all run on a predictable schedule. The Uniform Time Act finally gave them the tool to do that.
What happened during the 1974 year-round daylight saving time experiment
The most dramatic chapter in the history of daylight saving time in the United States is also the shortest. It lasted just over a year, and it ended with public opinion turning against it so fast that Congress reversed course before the experiment was even finished.
Facing the 1973 oil crisis and long lines at gas stations, President Richard Nixon signed the Emergency Daylight Saving Time Energy Conservation Act in late 1973. On January 6, 1974, the United States moved to year-round daylight saving time. The idea was simple. If Americans had more evening daylight, they would use less electricity for lighting and air conditioning, and the country would burn less foreign oil.
The results were not what anyone predicted. Within weeks, complaints poured in. Children in the northern states were walking to school in total darkness during winter mornings. The number of pedestrian fatalities involving schoolchildren spiked. Adults commuting to work in the dark reported more traffic accidents. Sleep researchers began publishing the first studies linking the disruption to heart attacks and workplace injuries.
Public anger was loud enough that Congress passed a compromise in October 1974. The compromise split the difference. From October 1974 through April 1975, the country would observe standard time. Then DST would resume as usual. By the time clocks fell back in late 1974, the year-round experiment was effectively dead. Congress had used the same act to undo what it had authorized less than a year earlier, and the twice-yearly schedule returned.
How DST grew longer with the Energy Policy Act of 2005
After 1974, daylight saving time stuck to its April to October schedule for three decades. Then, in 2005, President George W. Bush signed the Energy Policy Act into law, and the timing shifted again.
The Energy Policy Act of 2005 extended DST by about four to five weeks, effective in 2007. Clocks would now spring forward on the second Sunday in March and fall back on the first Sunday in November. The stated reason was once again energy savings, though later studies from the Department of Energy found the savings were smaller than expected, often below 1 percent.
The change made evenings brighter through most of the year, but it also stretched the dark-morning period of late fall and early spring, which is why so many Americans today dread the “spring forward” Sunday in March.
Why farmers opposed daylight saving time rather than supporting it
If you have ever heard someone say daylight saving time was created to help farmers, that is the most common myth in American timekeeping. The historical record shows the opposite is true.
Farmers, especially dairy farmers, lobbied against daylight saving time when it was first proposed in 1918. Their work is governed by sunrise, not by office hours. Cows need to be milked on a schedule tied to the sun. Crops need to be harvested and brought to market in the cool morning hours. A clock that says 6 a.m. but feels like 5 a.m. does not change when the dew dries or when the sun rises.
Dairy industry representatives were some of the loudest voices asking Congress to repeal the Standard Time Act in 1919. They were the same voices that protested during the year-round War Time period of 1942 to 1945. The farm lobby has never been a fan of DST, and there is no serious historical source that credits farmers with pushing for it.
So where did the myth come from? Probably from the opposite observation that anyone who drives through rural America in summer has made. During DST, you see farmers working late into the evening because the sun is still up at 9 p.m. The illusion of extra daylight made it look like DST was helping them. In reality, the farmers were just finishing the same work they would have done anyway, only later on a clock that lied to them.
Which states have tried to ditch the clock change with the Sunshine Protection Act
Since the Uniform Time Act, two states have chosen to opt out of daylight saving time entirely. Arizona did so in 1968, and Hawaii never observed it. Both stay on standard time year-round, which means they are three hours behind Eastern Daylight Time in summer and two hours ahead in winter. For most other states, the rules still come from Washington.
That may be about to change. The Sunshine Protection Act, which would lock the entire country on daylight saving time permanently, has been one of the most popular pieces of unfinished business in Congress for years. In March 2022, the bill passed the US Senate by unanimous consent, a rare show of agreement. It then stalled in the House of Representatives and was not brought to a vote before the session ended.
The Sunshine Protection Act has been reintroduced in every Congress since, and as of 2026, at least 19 states have passed their own laws saying they will switch to permanent DST once federal law allows it. The sticking point is the choice between permanent standard time and permanent daylight saving time. Sleep researchers overwhelmingly favor permanent standard time for health reasons, but most voters tell pollsters they want more evening light, which only permanent DST would deliver.
What daylight saving time looks like in 2026
In 2026, daylight saving time still follows the schedule set by the Energy Policy Act of 2005. Clocks spring forward on the second Sunday in March and fall back on the first Sunday in November. Arizona and Hawaii remain on standard time year-round, and the territories of Puerto Rico, Guam, the US Virgin Islands, and American Samoa do not observe DST either.
Public support for ending the clock change is at historic highs, but the Sunshine Protection Act still needs a House vote, a Senate re-passage, and a presidential signature before any of the 19 ready states can act. Until that happens, the spring forward, fall back ritual continues.
Frequently asked questions about the history of daylight saving time
What is the true origin of daylight savings time?
The true origin of daylight savings time traces back to a satirical 1784 letter by Benjamin Franklin in the Journal of Paris, where he joked that Parisians could save money on candles by waking earlier. The first formal proposal came from New Zealand entomologist George Hudson in 1895, and British builder William Willett spent the last decade of his life lobbying for the idea from 1905 until his death in 1915. The first country to actually adopt it was Germany in 1916, and the United States followed with the Standard Time Act of 1918.
Why do the US want to stop daylight savings time?
Americans want to stop changing the clocks because of mounting evidence that the twice-yearly shift disrupts sleep, increases traffic accidents, and is linked to short-term spikes in heart attacks and workplace injuries. The Sunshine Protection Act, which would lock the country on daylight saving time permanently, has been reintroduced in every Congress since 2018, and 19 states have already passed their own laws waiting for federal action.
What happened to daylight savings time in 1974?
In January 1974, President Richard Nixon signed a law moving the entire country to year-round daylight saving time as an energy conservation response to the 1973 oil crisis. Within months, public outrage grew as children walked to school in total darkness, pedestrian accidents spiked, and the energy savings proved smaller than expected. Congress repealed the year-round experiment in October 1974, less than a year after it began, and the country returned to the standard spring forward, fall back schedule in April 1975.
What did Trump say about daylight savings time?
In December 2024, then President-elect Donald Trump said he would push Congress to end the practice of changing the clocks and that the Republican Party could do it because it would not cost anything. His comments revived the Sunshine Protection Act debate, though the bill has yet to pass both chambers of Congress as of mid 2026.
Why daylight saving time still shapes American life today
The history of daylight saving time in the United States is a story of compromise, crisis, and habit. A satirical letter by Benjamin Franklin in 1784 became a wartime fuel ration in 1918. That ration was repealed, then revived for World War II, then repealed again, then standardized in 1966, then broken in 1974, then extended in 2005. Today, more than a century after the first law, the country still flips its clocks twice a year, and 19 states are waiting on Washington to let them stop.
Next time you spring forward, remember the dairy farmers who begged Congress not to make them do it, the children who walked to school in the dark in 1974, and the Senate that once passed a permanent DST bill by unanimous voice vote. The history is still being written, and the next chapter is up to Congress.