Slashdot Mirror


Proof Daylight Saving Time Is Dumb, Dangerous, and Costly (bloomberg.com)

From a report on Bloomberg: The case for daylight saving time has been shaky for a while. The biannual time change was originally implemented to save energy. Yet dozens of studies around the world have found that changing the clocks has either minuscule or non-existent effects on energy use. [...] The latest research suggests the time change can be harmful to our health and cost us money. The suffering of the spring time change begins with the loss of an hour of sleep. That might not seem like a big deal, but researchers have found it can be dangerous to mess with sleep schedules. Car accidents, strokes, and heart attacks spike in the days after the March time change. It turns out that judges, sleep deprived by daylight saving, impose harsher sentences. [...] Some of the last defenders of daylight saving time have been a cluster of business groups who assume the change helps stimulate consumer spending. That's not true either, according to recent analysis of 380 million bank and credit-card transactions by the JPMorgan Chase Institute.

49 of 352 comments (clear)

  1. We've known this for years by Virtucon · · Score: 4, Insightful

    We've known for a long time, at least in my recollection since the '70s, that daylight savings time didn't do much other than cause problems. Since our Nation really isn't based on agricultural production anymore maybe it's time we just give it up. I'm sure the farmers, chickens and local schools can get it sorted out okay.

    --
    Harrison's Postulate - "For every action there is an equal and opposite criticism"
    1. Re:We've known this for years by Ol+Olsoc · · Score: 4, Funny

      We've known for a long time, at least in my recollection since the '70s, that daylight savings time didn't do much other than cause problems. Since our Nation really isn't based on agricultural production anymore maybe it's time we just give it up. I'm sure the farmers, chickens and local schools can get it sorted out okay.

      It's another case of Government over-reach. No one tells me what to do. We have the right to make it whatever time we want it to be.

      I use the metric minute, hours and days, but in every other letter of the greek alphabet.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    2. Re:We've known this for years by squiggleslash · · Score: 5, Informative

      When I grew up, my teachers blamed the farmers for DST too. So imagine my surprise when I found out they're actually among the loudest opponents of DST - they generally oppose it because their work is synchronized to daylight hours, and DST means the entire world moves one hour out and expects deliveries, staffing, etc, an hour earlier for half the year.

      --
      You are not alone. This is not normal. None of this is normal.
    3. Re:We've known this for years by rmdingler · · Score: 5, Funny

      A group of scientists placed five monkeys in a cage, and in the middle, a ladder with bananas on top. Every time a monkey went up the ladder, the scientists soaked the rest of the monkeys with cold water. After a while, every time a monkey would start up the ladder, the others would pull it down and beat it up. After a time, no monkey would dare try climbing the ladder, no matter how great the temptation. The scientists then decided to replace one of the monkeys. The first thing this new monkey did was start to climb the ladder. Immediately, the others pulled him down and beat him up. After several beatings, the new monkey learned never to go up the ladder, even though there was no evident reason not to, aside from the beatinThe second monkey was substituted and the same occurred. The first monkey participated in the beating of the second monkey. A third monkey was changed and the same was repeated. The fourth monkey was changed, resulting in the same, before the fifth was finally replaced as well. What was left was a group of five monkeys that – without ever having received a cold shower – continued to beat up any monkey who attempted to climb the ladder. If it was possible to ask the monkeys why they beat up on all those who attempted to climb the ladder, their most likely answer would be “I don’t know. It’s just how things are done around here.” Does that sound at all familiar?

      --
      Happiness in intelligent people is the rarest thing I know.

      Ernest Hemingway

    4. Re:We've known this for years by gordguide · · Score: 2

      The areas that do not implement DST do so precisely because farmers don't want it.

      It's business interests that drives it ... if New York, Chicago, Los Angeles and in Canada Toronto didn't implement it, the other areas that need to be in contact with and in sync with the plethora of Head Offices based in those cities wouldn't lobby to implement or keep it.

    5. Re:We've known this for years by jeremyp · · Score: 3, Informative

      No human would fall for that...

      https://www.youtube.com/watch?...

      Oh.

      --
      All I want is a secure system where it's easy to do anything I want. Is that too much to ask ~~ Randall Munroe
    6. Re: We've known this for years by corychristison · · Score: 4, Insightful

      I commented the below comment in the last /. post about DST:

      As someone even more North than you (Canadian Prairies), it doesn't make any sense... sun is still down when most people go to work, and sun goes back down again before most people are done work.

      Shifting it an hour really has no benefit when you only get 7 hours of daylight in the winter.

      In the Summer it's opposite. Sun comes up between 5-6 am, sets around 10pm.

      With that said, where I live, we don't have DST and I'm damn glad we don't.

      It's largely a regional thing, based on where you are geographically. This is why generalized discussions about DST don't make sense. Everyone lives in different area's both on the horizontal and vertical axis.

      In other words, your experience is not my experience. How about we quit arguing about it and get on with our lives?

    7. Re:We've known this for years by religionofpeas · · Score: 5, Funny

      DST is useful if you give a fuck about the sun. Guess what. I don't.

      In a recent review of the Sun, it only got one star.

    8. Re:We've known this for years by 0100010001010011 · · Score: 2

      Why not do a permanent time shift such that the sun sets at 8:15 pm! Now you can have even more cookouts.

    9. Re:We've known this for years by khallow · · Score: 2

      Inertia and some ancient virtue signalling in the wake of an oil embargo. Someone determined that less electricity would be used, therefore it became something we must do.

    10. Re:We've known this for years by Hognoxious · · Score: 2

      I can tell you with 100% certainty that sleep-deprived pigs are exceptionally grumpy.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    11. Re:We've known this for years by Frobnicator · · Score: 2

      If it serves exactly nobody, why the hell do we keep it?

      TODAY it serves very few people. Electricity is cheap and plentiful in the modern world, and modern lighting means we can do tasks requiring bright light at any hour of the day.

      WHEN IT WAS INTRODUCED, much of the world relied on lamps and candles for light. Standardized time zones were still fairly new (introduced 1883) which caused people on the western end of time zones to have later lighting. In the 1880s and 1890s a few large cities used arc lights to replace gas lights, but these were high power (often 10K volts per loop) and were therefore expensive. Outside of cities with municipal lighting systems, electric lights were fairly rare. It wasn't until the 1930s that the US got electricity to most places, and light bulbs followed as electricity spread. So back then, shifting the clocks meant families spent less money on oil and candles in the morning.

      For two specific examples, with DST Boston (on the eastern side of the time zone) daylight starts at 6:00 AM in April, peaks about 5:00 in June, and is back to 6:00 AM in September. Without DST it wouldn't be daylight hours until 7:00 or 6:00 at those times. However, in Indianapolis (on the western side of the time zone) daylight starts at 7:00 in April the earliest at 6:15 on those same months under DST, instead of 8:00 in the spring and fall or 7:15 in the summer.

      Back in the era of expensive oil and candles, collectively across society DST saved quite a lot. It made sense financially for people who worked in the mornings. These days it makes less sense thanks to modern lighting costs.

      --
      //TODO: Think of witty sig statement
    12. Re:We've known this for years by msauve · · Score: 2
      "Since our Nation really isn't based on agricultural production anymore maybe it's time we just give it up."

      It's got nothing to do with farmers, a similar article points this out:

      For some reason, many Americans grew up believing that the practice was adopted for farmers, Downing said.

      "That's the complete inverse of what's true," he said. "The farmers were the only organized lobby against daylight saving in the history of the country," he said, explaining that the practice left them with an hour less sunlight to get crops to market.

      The rationale was mostly around saving energy by having more natural light, later in the day. Dairy farmers are apparently quite stupid:

      Many farmers still don't like DST, including some dairy farmers, who find that cows' natural milking schedules don't adapt easily to a sudden shift.

      Acting as if they have to milk cows at a certain clock time, instead of simply keeping to a consistent solar schedule.

      --
      "National Security is the chief cause of national insecurity." - Celine's First Law
    13. Re: We've known this for years by chipschap · · Score: 5, Funny

      You remind me of what was once said in the North Dakota state legislature, by one of the brilliant state representatives, when they were considering (but ultimately rejected) the idea of opting out of DST: "I don't know. My garden needs that extra hour of daylight."

    14. Re:We've known this for years by squiggleslash · · Score: 3, Interesting

      Yeah, change normal office working hours from 7-8am to 4pm-4.30pm. Everyone goes to bed at 6pm-7pm (kids), 9pm-10pm everyone else. The TV watershed is reduced to 10p... no, 7pm, because it shouldn't be that late in the first place.

      Quite why we can't do that, and have to change the clock instead, is a mystery to me! We could even continue to do it during sunnier parts of the year if there really does turn out, despite TFA, to be some reason for "daylight savings".

      --
      You are not alone. This is not normal. None of this is normal.
    15. Re:We've known this for years by ausekilis · · Score: 2

      It's another case of Government over-reach. No one tells me what to do. We have the right to make it whatever time we want it to be.

      So it's beer o'clock? I like this new work schedule.

  2. National DST Day by PopeRatzo · · Score: 4, Interesting

    Why not just make the Monday after DST time change a national holiday? Problem solved.

    Me, I like Daylight Savings Time, because it will allow me to sit out on the porch in May listening to the Blackhawks game and still have enough light to read. And in the Winter it would suck having to go to work in the morning in the pitch dark.

    --
    You are welcome on my lawn.
    1. Re:National DST Day by mrclevesque · · Score: 2

      What about setting time to halfway in between and then sticking to that.

    2. Re:National DST Day by Anonymous Coward · · Score: 3, Insightful

      Hey I have a radical idea! How about we adjust the work etc schedules differently for summer vs winter? Hmm, we'll ok it is not so radical, many businesses already do it... SO f*ing do that AND STOP WITH THE TIMEZONE BULLSHIT.

      Hey, our meeting is set up a bit late, it will be dark, how about setting it earlier. NO LETS ALL CHANGE OUR CLOCKS INSTEAD!!! Madness...

    3. Re:National DST Day by drinkypoo · · Score: 2

      Speaking of circadian rhythm, nobody considers the fact that DST helps keep it more aligned all year long.

      I have two words for you: winter hours

      If you want different words, try summer hours

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  3. Re:Proof?!?! First-world problems.... by Anonymous Coward · · Score: 4, Insightful

    I'm not going to dispute that this is a really shitty submission, and that Slashdot could do better.

    What I will dispute, however, is that the problems that people experience in civilized nations are somehow less important than the problems people experience in less civilized nations.

    People in civilized nations have to deal with all of the same problems that less civilized nations have to deal with. We still have to eat food and drink water. We still have to provide ourselves with shelter. We still need clothing. We still need to avoid injury and death.

    In fact, it's often much harder for people living in the most developed countries to do such things. Most of the most civilized nations are in areas with very inhospitable conditions, such as long and harsh winters, or short crop growing seasons. It's not like, say, Africa or the Caribbean, where the climate is such that shelter, clothing, and even agriculture almost become non-issues.

    Belittling "first-world problems" is silly, because they not only encompass the problem at hand, but they also encompass all of the problems that less civilized nations need to deal with, too.

    By their very nature, "first-world problems" are inherently more severe than "non-first-world problems".

    If something is deemed to be a "first-world problem", then it's a very significant problem. Just because civilized nations have come up with ways of dealing with the foundational problems doesn't mean that the higher-level problems are less problematic. It's actually quite the opposite.

  4. Excellent by RobinH · · Score: 2

    So can we just get rid of it then? I maintain a few data logging systems, and it creates all kinds of problems, as I'm sure you're aware most people want to view data in local time, but not only is there a 1 hour gap in the data in the spring, but there's actually going to be two points in time that are equally valid 1:30 am November 5th, 2017. That's just stupid.

    --
    "I have never let my schooling interfere with my education." - Mark Twain
    1. Re:Excellent by religionofpeas · · Score: 3, Insightful

      There is no need to have gaps or duplicate time points in your data. Hint: timezones and DST are only an illusion.

      You must have missed the part where OP says "most people want to view data in local time"

    2. Re:Excellent by religionofpeas · · Score: 4, Insightful

      Someone who wants to accurately analyze time-based data and insists on local time is an idiot

      So, when my travel app says I need to take the 1:30 am train, I'm an idiot for not using GMT or Unix timestamps ?

  5. Prototypical example by onyxruby · · Score: 3, Insightful

    Daylight savings is the perfect example of government's regulatory overreach interference in people's lives for theoretical gain. What is there is an increase in stress, time, money and heart attacks.

    It's a concept that kills people, something studies have shown for years. Meanwhile anyone who wants an extra hour of daylight can make a personal choice and adjust their sleep schedule.

    http://www.livescience.com/567...
    https://permies.com/t/509/Debu...
    http://www.nytimes.com/roomfor...
    https://www.theatlantic.com/na...

  6. But... by puddingebola · · Score: 2

    What about the immense benefits of falling back when strokes and heart attacks dip, the birth rate increases, economic production increases, and consumer spending increases. Yes, it is unfortunate that so many must die from springing forward one hour, but I think you'll all agree, falling back is too great a benefit to discard. Thank you.

    1. Re:But... by Imrik · · Score: 2

      Falling back gives a far smaller benefit than the problems from moving forward, in some cases it even is a negative on its own.

    2. Re:But... by Solandri · · Score: 2

      Read TFA. It compared Los Angeles (uses Daylight Saving Time) vs Phoenix (doesn't use DST) There's a large increase in health services consumed associated with the start of DST, and a minuscule almost non-existent decrease associated with its end. Across all aspects measured (grocery sales, retail sales, restaurant business, other services, health services), the net effect of the start and end of DST was zero or negative.

  7. Re:Correlation =! caustion by religionofpeas · · Score: 3, Insightful

    If one hour change caused this much havoc then driving/flying between time zones should have the same effect yet oddly, it doesn't.

    It doesn't ? Where's your data ?

  8. Proof was not given... by QuietLagoon · · Score: 5, Insightful

    Proof Daylight Saving Time Is Dumb, Dangerous, and Costly

    A correlation was cited, but causation was not proven. There are more pedestrian accidents between noon and 1pm. But that does not mean that lunch hour needs to be eliminated.

    .
    Nice try. Wanna play again?

    1. Re:Proof was not given... by religionofpeas · · Score: 4, Interesting

      A correlation was cited, but causation was not proven.

      DST happens on different dates every year, so if there's a clear correlation, it's as good as a proof for causation, because there's nothing else that happens on those days.

    2. Re:Proof was not given... by religionofpeas · · Score: 4, Informative

      Different days of the month, but not different weekdays. Nice try. Wanna play again?

      Sure, I'll play again.

      Switching over to daylight saving time, and losing one hour of sleep, raised the risk of having a heart attack the following Monday by 25 percent, compared to other Mondays during the year, according to a new U.S. study released on Saturday.

  9. I just stopped changing my clocks by HalAtWork · · Score: 2

    Personally I stopped changing my clocks. Past few years I have just stayed on the current time and it's been great. I get more sunlight in the winter when I'm actually awake to enjoy it, and I avoided all the moaning and groaning of having to get up/go to bed earlier.

  10. Re: Proof?!?! First-world problems.... by Anonymous Coward · · Score: 3, Insightful

    Except that "first world problem" is normally used specifically to imply something is insignificant. In this case the thing is, apparently, actually significant, so I agree it's the wrong use of the phrase. But In general it can be a meaningful phrase.

  11. Yes get rid of it by Rick+Schumann · · Score: 3, Insightful

    Get rid of the time change and make it light an hour longer in the evening. Who really gives a damn if dawn is an hour later every day? Most people work. So you're going to work in the dark, so what? Wouldn't most people prefer having it be light outside for a while after they leave work, even in mid-December?

  12. Re:Proof?!?! First-world problems.... by Opportunist · · Score: 2

    So heart attacks and traffic accidents are first world problems? Guess you should be happy in your third world hellhole then and we can turn off the development aid?

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  13. Re:Proof?!?! First-world problems.... by dougdonovan · · Score: 2

    i'm glad i live in az. it cuts down on the global drama.

  14. Re:Correlation =! caustion by Solandri · · Score: 2

    The entire premise behind Daylight Saving is that it will result in improved quality of life. If it's correlated with decreased quality of life, then that's enough to invalidate its reason for being. We don't need to show causality. We're not trying to prove smoking is bad for you. We're just trying to show that the purported health benefits of smoking don't exist.

    That said, I suspect Daylight Saving was more useful when we were an agrarian society and the extra hour of daylight was useful for field hands to see what they were doing out in the crop fields. But today only 1% of the population works on farms.

  15. Re:I always figured it was about productivity by ledow · · Score: 2

    But you don't magically get an extra hour of daylight. They still work X hours which overlaps with Y hours of daylight. You've just offset one against the other slightly.

    And, in fact, in most places at any decent latitude, the hours of daylight are vastly longer than the average working day and even when they are not, what you lose in the morning, you gain in the evening and vice-versa:

    http://jan.moesen.nu/daylight-...

    As a mathematician, I honestly could never fathom what it was trying to achieve.

    Even if you told your employees "be in within an hour of sunrise, you can go home an hour after sunset" (or whatever), it would actually make more sense and there would be no need to change clocks whatsoever, and it would maximise "daylight working" (which is just a stupid concept in the modern world anyway).

    Changing the clocks to follow a window of sunlight that is CENTERED ON NOON BY DEFINITION, and then making up a fake time to adjust that just makes no sense whatsoever - any way you shift it you lose the same amount of sunlight as you gain.

    It's a nonsense that has followed us for centuries which nobody has ever had any proof that it made any difference, and everyone has always known that the associated costs were greater than the gains anyway.

  16. This farmer in favor of DST by caseih · · Score: 2, Interesting

    I farm and I'm actually in favor of DST, sort of. The reason is, without DST, during the very long summer days, I would have to wake up at 4 am to do herbicide applications (it's calmest around dawn). With DST I can sleep in until 5am. So I'd much rather have it than not have it. It makes a huge difference. Without DST I would just have to go to bed a lot earlier, but to make that effective I'd have to simply go to bed early all the time to condition my body to wake up earlier. That just doesn't work all that well when everyone else is going to bed later.

    But I would be in favor of simply having DST year round. The reasoning is that without DST, in the winter, folks usually wake up in the dark and drive to work in the dark, and then by the time they head home from work, it's dark again. With DST, you'd still drive to work in the very dark hours, but at least when you got home from work you'd enjoy a short period of daylight. At least for the northern latitudes.

  17. It is not the hour, it is the change by markdavis · · Score: 3, Informative

    There is really nothing wrong with Daylight Saving Time. For modern people, it is better to have daylight later in the day than earlier. The problem is the change to and from Saving Time to Standard Time; that messes everything up.

    Change to DST (summer time) and just STAY THERE and stop changing time and all our problems go away.

  18. Missed Mass by meta-monkey · · Score: 3, Funny

    Also I missed church this morning, and evening Mass never feels the same. Ditch DST.

    --
    We don't have a state-run media we have a media-run state.
  19. Proof was given that DST is ineffective by Solandri · · Score: 2

    You have it backwards. If DST were useful as its proponents claimed, you'd expect to see a positive correlation with its use. Instead a negative correlation was found. That's enough to invalidate the claims of DST's proponents. No need to prove causation. (In fact if anyone needs to prove causation, it's the people advocating DST.)

    We're not trying to prove smoking is bad for you. We're merely trying to disprove the claims by the tobacco companies (DST proponents) that smoking is good for you.

    And if you actually read TFA, you'll see that their comparison was nothing as stupid as comparing the lunch hour to the hour before or after lunch. They compared Los Angeles (which uses DST) with Phoenix (which doesn't use DST). That neatly accounts for all time-based variables like lunch hours.

  20. I get tired of the complaints by Hussman32 · · Score: 2

    Why do people complain? You have more light for evening activities while still having enough light in the morning to get you to work.

    I can ride my bike home after work and not be in the dark. I can take my kids to the park. I can spend one more hour in the yard.

    It changes back because it's too dark in the morning for too long.

    And sure, as Hawai'i and Arizona can tell you, you're just fine if you don't change them. But I like it.

    --
    "Who are you?" "No one of consequence." "I must know." "Get used to disappointment."
    1. Re:I get tired of the complaints by religionofpeas · · Score: 2

      You have more light for evening activities

      It's still too cold right now for evening activities, and if I just wait another month, sunset will be an hour later anyway.

  21. DST year round by fdhealy4 · · Score: 2

    DST is not the issue, it's the switching that's the problem from my viewpoint. I would welcome DST year round as it gives you an extra hour of sunlight in the evening. This would be most appreciated in the winter.

  22. Re:Reporters shouldn't complain by jwhyche · · Score: 2

    I have to reset the blinky clock on the stove. it blinks and blinks and blnks.....

    --
    I read at +2. If your post doesn't reach that level I will not see or respond to it.
  23. Re:Correlation =! caustion by drinkypoo · · Score: 2

    I suspect Daylight Saving was more useful when we were an agrarian society and the extra hour of daylight was useful for field hands to see what they were doing out in the crop fields.

    Your suspicion is incorrect. It doesn't matter if you're a farmer or a carpenter or if you work in any other occupation where you need sunlight to see what you're doing; when you work has nothing to do with what time it is, and everything to do with when the sun is shining. You'll make an agreement to meet at an hour o'the clock because that's how our society works, but it could as easily be based on time after sunrise. You can get sunrise time information trivially.

    --
    "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  24. Re: Reporters shouldn't complain by jwhyche · · Score: 2

    The last thing that blinked and blinked 12:00 at me I tossed in the trash. The stove is much more heavy than a VCR so tape it is.

    --
    I read at +2. If your post doesn't reach that level I will not see or respond to it.