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#dst#hours#change#sun#sunrise#don#hour#clock#having#permanent

Discussion (75 Comments)Read Original on HackerNews

reedf119 minutes ago
It's pretty astounding to me the number of pro-DST advocates in this forum. If you had hundreds of daily jobs on your platform and you happen to have some regular requirement to change them in unison, if a junior engineer said "let's just change the system clock to adjust for when we want the jobs to run", you would say no, because while it might be easy compared to changing the config for each of the jobs, the risk of ongoing errors, side effects, introduction of jobs that need to fixed in absolute time that you have to make the inverse change... It's a system nightmare.
f33d51732 minutes ago
It's a fairly trivial change. We already have timezones, which exist to deal with the fact that the sun comes up at different times in different parts of the world. We already have to design everything around the assumption that timezones can change, since people sometimes move to different parts of the world. All we do is cause, for an entire timezone, that it becomes a different timezone at one point in the year, and switches back later. This ensures that the sun continues to come up at a consistent time. The main issue it causes is to make the lives of programmers slightly more difficult, which I am sure they can cope with...
artisinal16 minutes ago
That is why you run your jobs on GMT/UTC and not display time.
edoceo12 minutes ago
The jobs need to run at midnight, local time. Which shifts from UTC. How to handle?
YossarianFrPrezabout 1 hour ago
Between this and the "Sunset time and the economic effects of social jetlag: evidence from US time zone borders" paper [0], it seems like the issue is the size of the discontinuous jump in time, not necessarily that we change the clocks. So why not "smear" the DST<=> ST transitions by having four half hour transitions, once each quarter?

[0]https://pubmed.ncbi.nlm.nih.gov/31030116/

JoshTriplett41 minutes ago
> So why not "smear" the DST<=> ST transitions by having four half hour transitions, once each quarter?

Very easy answer: Because it's already painful twice a year, and that would be making it even worse.

That answer is similar to the one for questions like "why do we have wide time zones that are somewhat inaccurate, rather than setting every clock based on the exact position of that clock?".

nerdsniper37 minutes ago
I’d be okay with every day having a different # of seconds. That way we slowly adjust with no discontinuity, but the nominal start time of school/work stays the same.

While this feels would be a disaster for other reasons like: “How many seconds are in an hour?” -> “Depends, no one knows.” … that’s already the case with our existing leap seconds.

zokier33 minutes ago
> that’s already the case with our existing leap seconds.

Which we are also in the process of getting rid of.

raz32dust42 minutes ago
If you present this as the alternative, I think there's a chance people might actually just get rid of it :)
ssl-330 minutes ago
I like where this is heading.

To that end, I'd like to propose 12 transitions. These should happen on the 16th day of every month, at precisely 05:14:33.

Let's take our seasonality more seriously.

sharts36 minutes ago
Every few years these studies are published. Nothing changes. Unfortunately policy isn’t dictated by science, facts, or optimal outcomes for all.
tristanjabout 1 hour ago
Do the anti-DST people understand what they're advocating for?

Have a look at the sunset/sunrise graph for northern parts of the US https://www.timeanddate.com/sun/usa/seattle

In Seattle, without DST, sunrise happens at 4:11am. Because of DST, it's pushed back an hour later to a more reasonable 5:11am.

I am not awake at 4am, I have no use for sunlight at 4am, and I don't want the sun appearing that early. That hour of early sunlight is wasted for me. Plus with DST, the sun sets an hour later, at 9:11pm, a time I am actually awake, and I can actually go outside and use the extra sun.

With permanent DST, then in winter sunrise is at 9am in Seattle, which is far too late. I do not want to go to work in the dark, before sunrise. So I want standard time in winter, pushing sunrise earlier a more reasonable 8am.

In both situations (summer and winter), modifying the time via DST benefits me and gives me better use of sunlight.

AngryDataabout 1 hour ago
Why should the clock be set to those arbitrary points? If you want sun in the morning, wake up later, it you want sun in the evening, wake up earlier.

If your issue is when work is scheduled, well businesses set their own hours, not the government.

artisinal12 minutes ago
> businesses set their own hours, not the government

In plenty of countries the government decides the opening hours of shops, restaurants and sometimes even offices. Labour laws and nighttime pay are coupled to the hours on the clock. Hours you can make noise is decided by government. Germany has the mid-day resting hour (Mittagsruhe).

seanmcdirmid42 minutes ago
Then we should have timezones based not just on longitude, but also latitude. So northerly locales can get some sleep in the spring/summer/fall.

> If your issue is when work is scheduled, well businesses set their own hours, not the government.

Ah, someone who doesn't have kids in school/camp/some random activity yet.

We know how this goes in China (one time zone, no daylight savings time). Coming home from the bar in Beijing with the sun showing up at 4 AM was quaint back then, but I'm definitely glad we have DST in the states.

captainmuon26 minutes ago
Beijing is a bad example, because all of China actually has Beijing time. It gets confusing in Xinjang, which is 2 hours in the "wrong" timezone. But that doesn't mean that people start work at 8:00 in complete darkness, they just start at 10:00 wall time.

I think the talk of daylight savings time is a distraction, in the end it is arbitrary what the clock says. As a society we need to negotiate when (in celestial time) we want to do certain activities. For example, there are a lot of studies that school starts to early (relative to sunrise and the average bed time of teenagers). But the school starting time has to be decided politically. And reduced working hours or later start times have to be negotiated by trade unions, politics etc.. That's a lot more messy than just shifting wall time.

ssl-327 minutes ago
How many school kids are coming back from the bars at 4 AM in Beijing?
user4392843 minutes ago
Working hours will not change.

I will fight tooth and nail against attempts to take one hour of daylight from me in the evenings for half of the year.

reedf127 minutes ago
"Working hours will not change". Except they have in most countries where they have got rid of DST...
jonplackettabout 1 hour ago
Businesses don’t care how much sun you get
AngryData42 minutes ago
The government doesn't set the opening hours of businesses though either.
ekidd24 minutes ago
Yeah, as someone who lives in Vermont, you could talk me into permanent DST. That would move the winter sunset from, say, 4:21pm to 5:21pm, which would mean I'd get enough twilight for a short walk after work. And Maine is even further east and north in the same time zone, so they have an even earlier sunset. On the other hand, Vermont's standard time sunrise around 7:20 is reasonable enough.

Parts of Vermont have traditionally coped with this by having an 8-4 workday instead of 9-5.

But the reality is that Vermont gets only about an hour of daylight outside working hours, depending on local customs. People have extremely strong preferences about how that hour gets split up.

reedf1about 1 hour ago
Hol up, don't fix time, there's a few guys in Seattle without curtains. Sorry everyone.
snowe2010about 1 hour ago
Yeah, it’s insane. Along with that, any permanent gains in the morning will be lost as soon as it becomes normal. Businesses will just open that much earlier. And this study assumed bedtimes of 10pm, which is not the average anywhere on the planet from what I remember the last time I looked into this. The average is like past midnight.
wpmabout 1 hour ago
More tyranny inflicted upon the rest of us by morning people
kortillaabout 1 hour ago
This just seems like a backwards justification. There is nothing wrong with a 9am sunrise or a 4:11am sunrise. People in Anchorage deal with both just fine.

> I am not awake at 4am, I have no use for sunlight at 4am

Most people aren’t awake at 5am either. Your use for the sun when there is an excess of it that goes well past your bedtime if you get up at 5am is irrelevant.

tristanjabout 1 hour ago
My work starts at 9am, therefore I wake up around 7am. My work start time does not adjust based on the seasons. Any sun before 7am is wasted for me.

Under DST, at summer solstice, the sun rises around 5am, giving me 2 hours of wasted sunlight.

Without DST, at summer solstice, the sun rises around 4am, giving me 3 hours of wasted sunlight.

I enjoy having additional hours of sunlight when I am awake, so for me I actually prefer having DST vs without it.

Similarly, in the wintertime, under permanent DST, sunrise is around 9am, and I don't want to drive to work in the dark.

zokier34 minutes ago
You can still wake up earlier and enjoy your sunrise even if your working hours are fixed.
hnfong32 minutes ago
I still don't understand why you don't just wake up earlier.

It's not like without DST you have to work so late that you don't have enough hours for sleep, right?

toxik34 minutes ago
I can see the DST argument for people where the shift kinda sorta works out, but many places (like Anchorage!) it's completely unnecessary. I live in Sweden and it's just the twice annually "ah shit the clock moved overnight."
suddenlybananasabout 1 hour ago
4am sunrise seems ludicrously early to me, but then again, even a 5am sunrise is awfully early.
reedf144 minutes ago
Ever lived at high latitude? It's normal.
tchalla32 minutes ago
You can have your own household clock.
zokier37 minutes ago
You realize that you can change your own sleep patterns seasonally if you want to? Heck, you could do that even gradually instead of those abrupt 1 hour changes. That is your choice, we don't need to fiddle with clocks for the whole society for that.
kubbabout 2 hours ago
This isn’t going to get fixed in my lifetime, and that’s sad. Countries have lost the ability to act.
JauntyHatAngleabout 2 hours ago
Plenty of countries have moved away from DST. Over half who previously used it IIRC.
lnsruabout 1 hour ago
Please name some of these countries. Europe is stuck with this nonsense and there is no hope in sight despite yearly polls showing majority people being against it.
rrr_oh_man33 minutes ago
> Please name some of these countries

According to https://en.wikipedia.org/wiki/Daylight_saving_time_by_countr... since 2000:

   Paraguay       2024
   Iran           2022
   Jordan         2022
   Syria          2022
   Fiji           2021
   Samoa          2021
   Brazil         2019
   Morocco        2018
   Western Sahara 2018
   Namibia        2017
   Tonga          2017
   Mongolia       2016
   Turkey         2016
   Azerbaijan     2015
   Uruguay        2015
   Russia         2014
   Libya          2013
   Armenia        2011
   Belarus        2010
   Falklands      2010
   Argentina      2009
   Bangladesh     2009
   Mauritius      2009
   Pakistan       2009
   Tunisia        2008
   Iraq           2007
   Guatemala      2006
   Honduras       2006
   Nicaragua      2006
   Sri Lanka      2006
   Georgia        2005
   Kyrgyzstan     2005
   Kazakhstan     2004
worthless-trashabout 1 hour ago
Queensland Australia, a single state moved away from it. It is glorious.
kubobleabout 2 hours ago
I really wonder about the methodology. The article didn't mention it.

Did they get several cities to participate?

userbinatorabout 1 hour ago
It was tried 52 years ago, and no one actually liked it, so we went back to DST again:

https://en.wikipedia.org/wiki/Permanent_time_observation_in_...

Possibly another example of the old Chesterton's Fence.

tumultabout 1 hour ago
No, that’s describing permanent DST, which was tried and failed, not lack of DST. Most people in the world live without DST and it’s fine. (The article also mentions this.)
tristanjabout 1 hour ago
The majority of the planet do not live at higher latitudes, where implementing adjusted summer/winter hours actually makes sense.
reedf139 minutes ago
Except it's not like Chesterton's fence, it was created at the edge of living memory for known reasons. If anything it's an example of the opposite effect, something like Chesterton's field, do we really need to build a wall here, it's been a field for a damn long time...
keiferskiabout 2 hours ago
Of all the things that cause obesity and sleep loss, is an hour change twice a year really a major issue?
pimlottcabout 1 hour ago
I don’t know, maybe someone should do a study on it.
MisterBastahrdabout 1 hour ago
It's an extra hour of potential outdoors activity before nightfall. Yes.
keiferski13 minutes ago
Do you think the average person is already spending the maximum amount of time outdoors to begin with?
kortillaabout 1 hour ago
“This stupid thing we do that is worse for society than the perceived upsides is only twice a year. Why not keep doing it anyway?”
anal_reactor28 minutes ago
My controversial idea: midnight should be where current 4AM is because 04:00 is the lowest point of human circadian rhythm. Currently we have nonsense like "1AM is technically a part of the next day but for all practical purposes it's still the previous day". Also, 24h clock should be the standard so that we can avoid discussions "is 12AM noon or midnight".
_ZeD_about 2 hours ago
And the rest of the world people? would it be healthier? the doubt is striking me
pluggerabout 1 hour ago
I live in Western Australia. for 3 years we trialed DST from 2006 to 2009. It was a nightmare personally, I was a sysadmin at the time and enterprise management tools were expensive and crap so we had to roll out DST file changes across our fleet manually. And because the change to allow DST for our region was a rushed job we then had to roll back after the 3 year unsuccessful trial.

Honestly, it was super stressful at the time. And DST that doesn't exist doesn't bother you in the slightest. Every day ends and flows into the next like the last. But the stress of a clock change twice a year doesn't have to happen, it's a choice.

ssl-316 minutes ago
The US extended DST by 4 weeks in 2007. We managed that well-enough. We can manage a similarly-sweeping change again.

(Sorry about your nightmare. It was easy on the systems I took care of at that time.)

mikestorrentabout 2 hours ago
Are you Yanks seriously not going to get this sorted out before winter? BC has moved - can at least the rest of Cascadia get their asses in gear? Come on, California, I do not want to be dealing with a north-south time zone difference with my coworkers
ssl-3about 1 hour ago
Yes, we won't. It turns out that we're way too terrible at being rational way too much of the time.

For DST in particular: Even discussions where the participants manage to form something resembling a quorum to stop changing the clocks twice every year somehow manage to unilaterally get sucked into a seemingly-inescapable quagmire of differing opinions, wherein: The decision of whether to use standard time and stick with it or to stick with DST instead becomes an intractable impasse.

Accordingly, nothing ever gets done.

I have every expectation that I will be dead and buried before this issue is resolved.

evilfredabout 1 hour ago
I think US states aren't allowed to switch unless the feds decide to allow it
mixologicabout 1 hour ago
US States aren't allowed to have permanent DST, but they can have permanent standard time.
kortillaabout 1 hour ago
Arizona doesn’t have it
nerdsniper32 minutes ago
We don’t really get much of anything sorted these days.
wpmabout 1 hour ago
Tough shit. I live on the eastern edge of Central Time, I don't want to be dealing with 3PM sunsets in December.
frollogastonabout 1 hour ago
Then get BC to change it back
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sixothreeabout 2 hours ago
I really don't want the sunrise time to be 5:00 in the morning and still not have any daylight to do errands after work. I don't care what the reasons are, but if seasons change the sunset time, what's so wrong with changing it a bit more?
andrepdabout 1 hour ago
> the researchers estimate that permanent standard time would result in some 300,000 fewer people having suffered from a stroke and result in 2.6 million fewer people having obesity

That 2.6 million people are obese because of a 1h shorter change night in one Sunday a year is an extraordinary claim. I would love to understand how they got to this result.

b112about 1 hour ago
"Study by people who hate daylight savings time and have great bias against it, suggests that..."
kgwxdabout 2 hours ago
Assuming they don't get hit by a car walking to school.