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Daylight Savings Time: 7 Surprising Things You May Not Know
National Geographic ^ | March 6, 2015 | Brian Handwerk

Posted on 03/07/2015 4:29:31 PM PST by SamAdams76

Many Americans will spring forward an hour to mark the beginning of daylight savings time (DST)—also known as daylight saving time—at 2 a.m. on Sunday, March 8. Time will fall back to standard time again on Sunday, November 1, when DST ends.

The annual adventure in altered timekeeping has produced some entertaining and exasperating situations over the past century. (Related: "Time to Move On? The Case Against Daylight Saving Time.")

Here are some strange-but-true facts you might not know about daylight savings time.

Cities Once Kept Their Own Time

Each U.S. state and territory is free to ignore daylight savings time, so residents of Arizona (except those on the Navajo Nation), Hawaii, Puerto Rico, the Virgin Islands, and other territories won't move their clocks this weekend.

If these exceptions seem confusing, the situation was far worse 50 years ago, according to Tufts University professor Michael Downing, author of Spring Forward: The Annual Madness of Daylight Saving Time. Before the U.S. Uniform Time Act of 1966, DST was often observed very locally—and chaos was the result.

"In 1965 there were 130 cities in the country with populations of 100,000 or more," Downing explained. "Fifty-nine did not observe daylight saving.

"Of the 71 that did, there were at least 20 different adoption dates. In Minnesota, St. Paul was on one time, Minneapolis was on a different time, and Duluth was on Wisconsin time. In fact, somebody even found a Minneapolis office building in which the different floors of the building were observing different time zones because they were the offices of different counties."

Things were so confused that in 1965 the director of the U.S. Naval Observatory, the country's center for strategic timekeeping, announced that the dissent over DST had made the world's greatest economic and military superpower the world's worst timekeeper, Downing noted.

Daylight Savings Was Based on Assumptions

Why did this tempest of timekeeping confusion begin in the first place?

Daylight savings time was first realized on a grand scale during World War I. It started in Germany, then caught on in a number of nations that wanted to reduce lighting demand and save coal for the war effort. During WWII, the U.S. observed year-round DST for the same reasons.

But it turns out that these sweeping time changes—mostly intended to save energy—weren't based on any evidence. (Related: "Extended Daylight Saving Time Not an Energy Saver?")

"We've all obeyed this dictum for a hundred years, and ... no one can really explain why," Downing said, adding that the first real attempt to quantify the supposed energy savings of DST occurred in 1966.

Governments Don't Get it Either

Governments have had just as much trouble keeping track of time changes as everyone else.

When Yugoslavia's president, Marshal Tito, visited the U.S. in 1963, his welcome was botched because of daylight savings time, Downing reported. "Tito's plane landed in a Virginia town that hadn't advanced its clocks with the rest of the state, so nobody was there to greet him."

"That same year, Pentagon officials were two hours late for an important military conference in Alaska because no one knew what time it was out there on the Russian border," Downing added. (See "Permanent Daylight Saving Time? Might Boost Tourism, Efficiency.")

Russia has had its own issues with managing DST, as have most other nations.

The Soviet Union first observed daylight savings time in the spring of 1930 after an edict by Josef Stalin. For some reason, however, the Soviet Union never turned the clocks back in the fall of that year.

"So for the duration of World War II, and the much longer Cold War, nobody really had an accurate sense of what time it was in Russia," Downing said.

Dirty Secret: We Like DST

Last year an opinion poll on DST taken by the Utah Governor's Office of Economic Development produced almost 14,000 written comments—a total volume nearly equal to the length of War and Peace.

"The strong, repetitive drumbeat in those comments was convenience," explained the development office's Michael O'Malley. "Many people don't want to move their clocks, whether it's backwards, forwards, or sideways. They just want to pick a time and stick with it."

Despite an apparent dislike of daylight savings, actions speak louder than words.

Downing noted that although countries like the U.S. and Great Britain instituted year-round DST at times, as during WWII, they still haven't succeeded in eliminating the changing of the clocks. (Also see "'Leap Second' to Be Added to the Weekend.")

"In the spring, people's fingers get itchy, and without fail they have moved the clocks to adopt a double daylight saving time by moving it an extra hour ahead, or just gone back to the regular old plan.

"I think people have come to believe and been converted to the idea that we are owed an extra hour of evening light in the spring," he added.

As proof, he notes that while many cities and states have petitioned for time zone changes over the years, 95 percent of such petitions have been for a movement to the eastern time zone—essentially the adoption of daylight savings time.

TV Networks Lose, Golf Courses Win

Daylight savings time has some unexpected winners and losers when it comes to how Americans spend their time and money.

Research shows that given an extra hour of evening daylight, many Americans use the time to go out and do things rather than watch the television shows they'd normally view at that time.

Nielsen ratings during the hours impacted by the change show large declines during the first week of DST—as much as 10 to 15 percent, even for popular shows.

"If the sun sets at 7:00, then more people are inside at 7:00. If it sets at 8:00, more people are inside at 8:00," said David Prerau, author of the book Seize the Daylight: The Curious and Contentious Story of Daylight Saving Time.

"They are still going to watch some TV, they are just going to watch it later."

Theaters also take a hit, Prerau added. "When it's dark early, people may feel it's a good night to take in a play or a movie. But when it's going to be light until 8:00, they may decide to take a walk or do something outside."

That means recreational facilities from golf courses to garden supply centers see a spike when DST begins.

"That hour of evening light might make the difference whether somebody feels they have the time to go out and play tennis or start a garden, or whether they don't," Prerau said.

Criminals Hate Daylight Savings Time

Thieves tend to do their dirty work under the cover of darkness. So creating an extra hour of evening light helps people get home during daylight hours, which appears to drop crime rates dramatically.

A 2012 study examined crime rates during the three weeks preceding and following the spring move onto DST.

During the extra hour of evening daylight, robberies decreased by 40 percent, according to data from the National Incident-Based Reporting System. Murder and rape rates also went down, though it's hard to say how much because the exact time such crimes are committed is often unknown.

The extra hour of light during the morning hours produced no increase in crime. "These types of crimes are just rare in the mornings, so the earlier hour of daylight has no impact in terms of rising crime rates," Prerau added.

Evening crime rates rose again, research showed, when daylight savings time ended.

Farmers Aren't Fans

Farmers have long been labeled as big backers of daylight savings time, or even credited with getting the practice going. Whether this idea came from farmers' early rising habits or some other reason, it's a myth.

"From the very beginning, when DST was proposed in Britain's Parliament in 1908, until today, farmers have been the number one group against daylight saving time," said Prerau.

Traditionally, farmers have set their schedule by the sun, and that's mostly still the case. But when the rest of society shifts an hour of light out of the morning hours, farmers have less daylight to handle morning tasks like getting their wares to market. Those charged with handling livestock like dairy cows say it's difficult for the clock-averse animals to adjust.

U.S. farmers don't put up the same kind of organized opposition to DST that they once did, but across the world, farmers are still the first group that would like to see the practice end, Prerau said.

"In fact, right now there is an ongoing fight in Queensland, Australia, where there was actually a daylight saving political party," he noted.

"People on the coast, which is primarily a resort economy, want the extra daylight in the evening, but the people living in the outback are mostly farmers and they don't want to observe daylight saving."


TOPICS: Astronomy
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To: Star Traveler

Most people have internal clocks; many people’s systems do NOT adjust well to DST.


61 posted on 03/07/2015 6:48:10 PM PST by nopardons
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To: SamAdams76

Not all sundials have removable/changeable parts. Mine doesn’t.


62 posted on 03/07/2015 6:50:06 PM PST by nopardons
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To: discostu

I’m not changing it ... and that would be my point ... don’t change it and leave it the way it is now. It would seem that you’re the one who wants to change it. I want to leave it the way it is ... :-) ...


63 posted on 03/07/2015 6:52:58 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Star Traveler

I want DST to burn, it’s a stupid idea. It’s always been a stupid idea, it’s always going to be a stupid idea, anybody that thinks they see benefit from it can get those ideas by adjusting their personal schedules instead of making the entire country change.


64 posted on 03/07/2015 6:54:39 PM PST by discostu (The albatross begins with its vengeance A terrible curse a thirst has begun)
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To: discostu; Mom MD

Actually no one’s schedule changes. All your appointments and work times and anything you’ve set up with the clock REMAINS EXACTLY THE SAME.


65 posted on 03/07/2015 6:57:48 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Star Traveler

You’re wrong !
Tomorrow, you will have “lost” an hour.
You may not feel it, but your internal clock will still be on ST !


66 posted on 03/07/2015 6:59:13 PM PST by nopardons
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To: discostu

I can pretty much GUARANTEE YOU that DST is not going to disappear. You may want it to, but it’s not. You’ll find that there are far more people who find benefits to DST than don’t. If it weren’t that way, it would have been dispensed with a long time ago ... :-) ...


67 posted on 03/07/2015 7:01:31 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Star Traveler

no actually EVERYONE’S (well except AZ) schedule changes. Tomorrow your schedule will have moved up an hour, what you were going to do at 7AM will now be doing at 6AM. Sure your clock will SAY 7AM but your clock will be lying. And your internal clock will know that. Especially with how we now start DST sooner, if your sunrise this morning was at 6 tomorrow it will be at 7, if your alarm clock is at 6 you used to get up with the sun, but tomorrow you will get up in the dark. Your schedule changes.

And the human knows it’s being lied to, and doesn’t like it:
http://abcnews.go.com/Health/Healthday/story?id=4509150
http://www.richmond.com/news/article_45eb07e8-c52e-11e4-af2d-1f1753f39d07.html
http://www.sciencedirect.com/science/article/pii/S0960982207020866


68 posted on 03/07/2015 7:04:43 PM PST by discostu (The albatross begins with its vengeance A terrible curse a thirst has begun)
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To: Star Traveler

HOGWASH !
It’s a government imposed bit of stupidity and THAT is why it won’t be stopped!
I bet you believe in GLOBAL WARMING/CLIMATE CHANGE too.


69 posted on 03/07/2015 7:05:41 PM PST by nopardons
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To: Star Traveler

Just because it’s not going to disappear doesn’t mean it shouldn’t. Graduated income tax probably isn’t going away either, it also is stupid. Nobody benefits from DST. Some people are just better at believing lies.


70 posted on 03/07/2015 7:05:52 PM PST by discostu (The albatross begins with its vengeance A terrible curse a thirst has begun)
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To: nopardons

My schedules work on “clock-time” ... and so does everyone else’s. You could have written down EVERY EVENT happening with you in June ... and could have done it in January, and even though DST would be off for June, you will have the EXACT SAME SCHEDULE as when you wrote it, when you were still on DST in January ... :-) ...

I actually know of no one who schedules things, like work or school or doctor’s appointments according to where the sun is at in the sky ... LOL ...


71 posted on 03/07/2015 7:06:46 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: discostu

It’s kinda like spitting into the wind ... :-) ... it must be a “slow posting night” ... LOL ...


72 posted on 03/07/2015 7:08:09 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Star Traveler

You may have been on FR for almost as long as I have, but you haven’t managed to learn anything in that time; it appears. You’re a BIG GOVERNMENT believing stooge.

No, “every event” won’t be “the same”! Oh the clocks may say that they hour is thus and so; however, my body claims otherwise and I shan’t be back to “normal”, until we all go back to REAL time again!


73 posted on 03/07/2015 7:13:08 PM PST by nopardons
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To: Star Traveler

Yes, YOU are “spitting in the wind” AND blowing smoke; you government brainwashed fool.


74 posted on 03/07/2015 7:14:54 PM PST by nopardons
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To: nopardons

If it’s stupidity, it’s one that I can assure you that you’re not going to get voters to change it. Good luck trying. But better yet, save your efforts for something that more voters will support.

As for your reference to the Climate ... YES ... I’m firm believer in global warming, global cooling and climate change ... as they are absolutely verifiable and proven beyond all doubt! They have been in operation since God created the heavens and the earth.

But, if someone is talking about “Anthropogenic Global Warming” ... no ... I would say that is politicized science.


75 posted on 03/07/2015 7:17:33 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Zionist Conspirator

You ever see the letter to the editor in Arkansas decrying DST adding to global warming?

It adds significantly to my “We’re doomed” feeling when I see this...


76 posted on 03/07/2015 7:19:10 PM PST by Axenolith (Government blows, and that which governs least, blows least...)
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To: nopardons

I’m not the one who wants to change anything ... you are ... so it appears you’re doin’ the spittin’ ... :-) ...


77 posted on 03/07/2015 7:19:32 PM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: discostu

dont you mean people should arrange their schedule to accommodate what you prefer? Because that is what you are saying. Everyone should adjust their work schedule to accommodate early daylight in the summer because thats the way you like it. At least be honest


78 posted on 03/07/2015 7:20:52 PM PST by Mom MD
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To: nopardons

Where I live it is getting dark in the winter by 4:30 or 5. And as they get older after school activities and sports often go til 5. Really.


79 posted on 03/07/2015 7:22:40 PM PST by Mom MD
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To: loungitude

Of course, if the forest fire started after sunrise but was expected to be contained by sundown...ha!

I do get one benefit in my evening commute as people don’t slow as much when it is still light (my morning commute is before the rush, but my evening commute is not)

Well, I best go start changing the umpteen million clocks in and around house now. I actually made a list out once and it helps a lot...it’s like every other thing seems to have a clock in it...even things like the clock inside answering machine and thermostats, things easy to miss. Some things change automatically.
At least I do get my clocks set accurate at same time.


80 posted on 03/07/2015 7:22:53 PM PST by Ronniesque
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