[HN Gopher] ISO-8601 date format reference not publicly available
       ___________________________________________________________________
        
       ISO-8601 date format reference not publicly available
        
       Author : tosh
       Score  : 288 points
       Date   : 2021-03-09 16:01 UTC (7 hours ago)
        
 (HTM) web link (twitter.com)
 (TXT) w3m dump (twitter.com)
        
       | remram wrote:
       | From yesterday: "ISO obstructs adoption of standards by
       | paywalling them" (same Twitter thread)
       | https://news.ycombinator.com/item?id=26390040
        
         | tosh wrote:
         | thanks for the pointer, I missed the discussion!
        
       | HDMI_Cable wrote:
       | I know that the ISO has to make money for their operations, but
       | fully locking standards behind paywalls seems so inefficient.
       | There are plenty of other business models to choose from besides
       | a full lock and key.
        
       | [deleted]
        
       | eyelidlessness wrote:
       | The first reply that showed up for me just said "that's dumb",
       | and well, yup that about sums it up.
        
         | TeMPOraL wrote:
         | Yeah, and that reply is from CEO of Epic Games. I don't know if
         | this holds any weight with ISO, but it at least explains why
         | this particular Twitter thread complaining about access to
         | ISO-8601 standard is hitting HN frontpage.
         | 
         | And he raises a good point downthread, too:
         | 
         | "So, what's the calculus with something like the ISO C++
         | standard? You sell 1000 copies at $200 = $200,000 lifetime
         | income. Meanwhile, a lack of understanding of C++ details is
         | kneecapping a hundred billion dollar segment of the technology
         | industry. It's absolute madness."
        
           | kps wrote:
           | For C++ there's no practical problem, since the C++ committee
           | chooses to make the I-can't-believe-it's-not-ISO 'final
           | draft' public.
        
             | scaladev wrote:
             | From what I've heard most compiler developers base their
             | work off those final drafts, so you'd be better off using
             | them anyway. Might be an old wives' tale though.
        
               | aidenn0 wrote:
               | I work at a compilers company and my manager has told us
               | to _not_ work off the drafts and to expense the standard
               | if we lack a copy.
               | 
               | I suspect volunteers working on floss compilers use the
               | draft, but anyone who can expense it has no reason not
               | to.
               | 
               | As an aside, when I need to explain how something works
               | for C, I quote the standard. When I need to explain how
               | something works for C++, I quote Stroustrup's book. The
               | C++ standard is very precise, but also very math-y.
               | Stroustrup is much more approachable.
        
               | cratermoon wrote:
               | > I suspect volunteers working on floss compilers use the
               | draft, but anyone who can expense it has no reason not to
               | 
               | This is the best summary of why having to pay for
               | standards is a problem. Let's unpack it carefully.
               | 
               | > volunteers working on floss
               | 
               | An enormous, perhaps the most vital, part of the people
               | working on everyday software stuff.
               | 
               | > anyone who can expense it
               | 
               | Companies and organizations that have money and may or
               | may not have a de facto controlling market share of
               | software that implements a spec
               | 
               | What happens when that company with a controlling market
               | share implements a part of the adopted standard that
               | differs in some apparently insignificant way from from
               | the freely available draft? If that difference turns out
               | to be more significant than it appears, now that company
               | has the only truly spec-compliant implementation, and the
               | rest of the market can't interop because of that
               | difference.
               | 
               | Hello vendor lock-in, my old friend.
        
             | em500 wrote:
             | Similar for ISO 8601:
             | https://news.ycombinator.com/item?id=26401497
        
             | felixr wrote:
             | Exactly, having https://github.com/cplusplus/draft is
             | enough in most cases
        
           | RcouF1uZ4gsC wrote:
           | > Meanwhile, a lack of understanding of C++ details is
           | kneecapping a hundred billion dollar segment of the
           | technology industry. It's absolute madness.
           | 
           | I agree with the sentiment that a lack of knowledge is
           | kneecapping C++ development.
           | 
           | However, that lack of knowledge isn't so much about the
           | details, but the big picture. Forget reading the ISO C++
           | standard, I think most C++ developers would be better served
           | by reading Scott Meyers "Effective C++" series. Forget about
           | knowing the grimy details of of the standard. I would be
           | happy for them know RAII, and avoid naked 'delete' calls.
           | 
           | I have some decent C++ experience, but even I try to avoid
           | areas of the language where you have to be a language lawyer
           | trying to parse if what you are doing is undefined behavior.
           | 
           | Yes, ISO c++ standard is the foundation, but there are a lot
           | more idioms and other knowledge to learn about C++ that is
           | far more important for making good C++ developers.
           | 
           | The target of the ISO standard is not your average developer,
           | but rather the people who write the compilers, standard
           | libraries, and books that bring C++ tools and knowledge to
           | the general developer. For them $200 is nothing compared to
           | the time and effort of those endeavors.
        
           | lgeorget wrote:
           | I don't think you can really understand C++ by reading the
           | standard to be honest. If you're such an expert you can read
           | the standard in its original form, you're probably already a
           | seasoned developer anyway.
        
             | munchbunny wrote:
             | Usually when you're reading a standard like that it's
             | because you're looking for details from an implementer's
             | perspective, not the user's. The specifications have to
             | make everything including the obvious details explicit,
             | which leads to a lot of verbal abstraction that's
             | counterproductive to just learning how to use the thing.
             | 
             | Once you're actually trying to implement the system though,
             | suddenly all of that language becomes really helpful.
        
             | sblom wrote:
             | I doubt that "learn how to speak C++" is why anyone _does_
             | read the standard. The standard is used for things like
             | ensuring broad compatibility among compiler
             | implementations.
             | 
             | CLARIFICATION: I suppose that might have been your point--
             | that not much hindering of understanding is going on among
             | the broad C++ community due to standards (un-)availability.
        
       | numpad0 wrote:
       | It's the same situation as research journal contracts.
       | Universities, major engineering firms, some federal agencies are
       | expected to give input to standards body, and then buy the
       | complete print book set for use. That's how almost every
       | industrial industries worked, up to the point when software
       | engineering started to exist.
        
       | chrismeller wrote:
       | Well I knew this, but it shouldn't surprise most of the people
       | here either. How many factories, data centers, companies, and
       | products have you seen that are ISO-something certified?
       | 
       | It's an entire industry, of course part of that process is paying
       | to get the specification that you're already paying for someone
       | to verify you're abiding by.
       | 
       | The last time I went through an audit the consulting firm that
       | was auditing us only very begrudgingly gave us the requirements
       | for a couple of sections because we kept insisting that we were
       | providing proof that we met them and they kept disagreeing. I
       | still think it was just to shut us up...
       | 
       | As they mention in the tweet, you can possibly get them from the
       | standards body in your country. For my current country (Estonia)
       | they don't seem to give it out freely, but you can buy the
       | version they approved as the country's standard for like EUR20,
       | compared with the EUR200 for the official ISO version. So there
       | are options...
        
         | rjsw wrote:
         | Only a subset of standards have a certification industry around
         | them.
         | 
         | In your dispute with the consulting firm you were expected to
         | buy your own copy of the standard, they don't have the rights
         | to give you one.
        
           | chrismeller wrote:
           | Agreed on both points.
           | 
           | I'm not saying every industry has a cert industry, just like
           | not every industry has a regulating body; just that these are
           | predominant enough in IT and related fields that it shouldn't
           | be surprising to a lot of people here to realize there are a
           | lot of them.
           | 
           | And of course I get that we were supposed to buy our own
           | copy. We actually had our own copy (when paying $20k for an
           | audit the couple $100 for the spec is insignificant), it was
           | just an anecdote I found funny.
           | 
           | They refused to provide anything about the spec so hard, even
           | though we kept insisting we did meet it... they wouldn't even
           | tell us which part specifically we didn't meet because they
           | didn't want to provide any of the spec to us. I think it took
           | the CTO and I sending heavily highlighted copies of the
           | requirements from the spec to them for them to realize that
           | we had it, it was ok to show us specifically what they didn't
           | think we met.
        
         | thewakalix wrote:
         | Why should the cost of certifications fall on people who just
         | want to see the standards?
        
         | JdeBP wrote:
         | The price list and the fact that (apparently) it will ship
         | internationally does make EVS quite interesting.
         | 
         | * https://evs.ee/en/faq-2
         | 
         | * https://evs.ee/en/discounts-when-buying-an-estonian-standard
         | 
         | *
         | https://evs.ee/en/search?query=8601&languages=41&organisatio...
        
           | n3uromancer wrote:
           | And there's also a 24 hour full pay-per-view option available
           | for 2.4 EUR.
        
       | fireeyed wrote:
       | The people running ISO and other "commercial standards" are in it
       | for the grift. If they make the standards free their gravy train
       | runs out.
        
       | coding123 wrote:
       | The iso standard is pretty much spec'd out enough on Wikipedia.
        
         | numpad0 wrote:
         | No, the point of a standard is it's supposed to be somehow
         | comprehensive about something so a thing conformant to it can
         | be expected to and guaranteed to work.
         | 
         | The fact that partial documentation is enough to make something
         | work isn't enough to tell your customer to suck up the loss
         | because it was beyond anyone's responsibilities.
        
           | ak217 wrote:
           | Yes, and the point of a standard is also that it should have
           | an authoritative, immutable copy for a given version of the
           | standard. The Wikipedia article is neither.
        
         | diggernet wrote:
         | No, there are many bits of 8601:2019 that are not even
         | mentioned on Wikipedia.
        
         | kevinpet wrote:
         | Is it? Are you sure? Are we following the ISO standard, or the
         | Wikipedia standard?
        
           | chrismeller wrote:
           | Not to mention the fact that the Wikipedia article
           | technically seems to violate the ISO copyright and could
           | disappear at some point...
        
             | ThrustVectoring wrote:
             | Facts cannot be copyrighted. Phrasing the description of
             | YYYY-MM-DD strings and the like in a different way is
             | likely sufficient to be freely available.
             | 
             | Now, whether that's _actually_ enough to convince the
             | administrators to keep it up and risk the time and expense
             | of a lawsuit is another matter entirely - in practice,
             | anything that rightsholders threaten to sue over is
             | probably banned, regardless of the actual legal status.
        
               | MaxBarraclough wrote:
               | > Facts cannot be copyrighted. Phrasing the description
               | of YYYY-MM-DD strings and the like in a different way is
               | likely sufficient to be freely available.
               | 
               | To my knowledge, wholesale 'rephrasings' of standards
               | documents have never been undertaken, even where royalty-
               | free access to a document is in relatively high demand,
               | such as with the C standard. StackOverflow ends up being
               | the substitute for the standards document.
               | 
               | As well as being a lot of work, it would open the door to
               | small inaccuracies. A lot of work goes into 'laywering'
               | the exact phrasing of such documents.
        
               | jfim wrote:
               | > To my knowledge, wholesale 'rephrasings' of standards
               | documents have never been undertaken, even where royalty-
               | free access to a document is in relatively high demand,
               | such as with the C standard.
               | 
               | No, they have. As a specific example, ETSI TS 102 221
               | contains enough of ISO/IEC 7816-2, 7816-3, and 7816-4
               | that one can implement a compatible device.
        
               | MaxBarraclough wrote:
               | Interesting, thanks. Do ETSI do this in the name of
               | making the ISO standard freely accessible, or is it done
               | for some other reason?
        
               | jfim wrote:
               | No, from what I understand it's done to standardize a lot
               | of telecom stuff across Europe. I think they're somehow
               | related to the GSM, but I haven't been in the telecom
               | industry in well over a decade so my memory is fuzzy
               | there.
        
           | alerighi wrote:
           | Probably we are following the Wikipedia standard, since most
           | if not all the libraries that everyone uses to parse and
           | produce ISO dates were written by people that read Wikipedia
           | and not by people that bought the standard.
           | 
           | The problem with "closed" standard is that most people if
           | they have to pay for something they find other way, and
           | assume the standard by reading other sources, Wikipedia, the
           | implementation of some library that is supposed to implement
           | the standard, or the drafts of the standard (like it's done
           | with the C standard, do you assume that every developer of
           | gcc have bought the standard?).
           | 
           | A standard isn't a standard because someone wrote a paper and
           | sold it, a standard is a standard if it's used by people. And
           | it happens that since standards are not freely available
           | people makes things that are close but not really conform to
           | the standard, and these things because the de-facto standard.
           | And you developer you have to support these cases.
           | 
           | Let's say ISO8601, there are a ton of applications that
           | produces dates that are similar to ISO8601 format but not
           | quite like it. And that you must support because they are so
           | common... and then you find piece of codes that tries to
           | interpret a date in various ways trying to compensate for
           | minor standard errors. It's a mess that could have been
           | avoided if the standard document were really open.
        
       | s_dev wrote:
       | Is this like having an encryption standard that you have to buy
       | to inspect? Is this analogy appropriate?
        
         | hwbehrens wrote:
         | It's not an analogy -- ISO/IEC 18033-3 [0] is _literally_ an
         | encryption standard that you have to buy to inspect.
         | 
         | [0]: https://www.iso.org/standard/37972.html
        
           | rdpintqogeogsaa wrote:
           | There's more. ISO/IEC 29192-1 through 29192-7 are standards
           | on lightweight cryptography that you have to buy to inspect.
           | Total cost for all of them including the one amendment is CHF
           | 812.
        
         | Shank wrote:
         | You have to buy the ISO 27001 standard, which is a security
         | standard: "ISO/IEC 27001:2013 specifies the requirements for
         | establishing, implementing, maintaining and continually
         | improving an information security management system within the
         | context of the organization. It also includes requirements for
         | the assessment and treatment of information security risks
         | tailored to the needs of the organization."
        
           | s_dev wrote:
           | So is this standard considered 'free' and 'open'?
        
             | chrismeller wrote:
             | Absolutely not. None of the ISO standards would meet either
             | of those criteria.
        
               | arthur2e5 wrote:
               | Nah, the term "open standard" is so vague that is
               | probably does.
               | 
               | In its laxest definition -- endorsed by ISO itself --
               | it's just a standard managed by a nonprofit standard
               | organization. In the more common definition it only
               | requires royalty-free use plus the org. Requiring free
               | access is unfortunately an extreme in the spectrum of
               | definitions.
        
       | michaeltimo wrote:
       | Maybe it's the time to think about an open alternative to ISO
       | like OpenISO or something.
        
       | flowerlad wrote:
       | I ran into this when I need to write an HTML parser. The W3 spec
       | references SGML and the spec for that is not freely [1]
       | available: https://www.iso.org/standard/16387.html
       | 
       | [1] free as in beer
        
         | beojan wrote:
         | I think you mean SGML. XML is a W3C standard
         | (https://www.w3.org/TR/xml/) so it _is_ freely available.
        
           | flowerlad wrote:
           | Thanks... corrected.
        
       | vendiddy wrote:
       | If someone were to release an open source reference
       | implementation with s thorough test suite, would that be able to
       | work around the lack of a spec?
       | 
       | And beyond that, are there any loopholes to workaround the need
       | to pay for a spec?
        
         | brlcad wrote:
         | NIST does this on the regular with ISO standards that they're
         | involved with. That said, having a reference implementation
         | with a test suite doesn't work around anything. Someone needs
         | to have access to the standard to create the reference
         | implementation. Not really a "loophole" but those on the
         | committee that develops a given standard typically have free
         | access to draft versions, often even the final version ratified
         | by ISO.
        
           | rjsw wrote:
           | People on a commitee have free access to the final versions
           | of anything that might be helpful to develop future
           | standards.
           | 
           | I'm guessing from your username which standards you are
           | interested in.
        
       | taylodl wrote:
       | So? I'd be happy if people would consistently use RFC 3339
       | (https://tools.ietf.org/html/rfc3339). This will solve 99.999%
       | you're going to run across. If you're part of that 0.001% who
       | actually needs the standard - then it will be worth a few bucks
       | to obtain it.
        
         | jedimastert wrote:
         | Would https://tools.ietf.org/html/rfc3339#appendix-A be
         | copyright infringement?
        
         | pistolpeteDK wrote:
         | In my experience (as a European) I found that RFC3339 was
         | lacking a few things when it comes to software development;
         | especially the usage of 24:00 to mark midnight at the end of a
         | day; which is a valid value according to ISO8601(can't remember
         | the section).
        
           | taylodl wrote:
           | I work for a utility who often needs to work with interval
           | data. The last interval of the day is 23:00-24:00 whereas the
           | first interval of the day is 00:00-01:00. Some libraries can
           | handle that as you'd expect, others can't. A lot of people
           | are surprised to see 24:00. The key is 24:00 is the same date
           | as 23:00, whereas 00:00 is the next day. It sounds like you
           | have a similar need?
        
             | bloak wrote:
             | In railway timetables things like 24:37 are sometimes used,
             | for example for a train that leaves at 23:45 and arrives at
             | 24:37 on weekdays. It would not just be confusing but
             | totally incorrect to claim that the train arrives at 00:37
             | on weekdays. On the other hand, I don't think I've ever
             | seen a 25:xx, and if you were writing a timetable for a
             | slow train on the Trans-Siberian Railway then I really
             | don't think people would appreciate it if you used a three-
             | digit hour.
        
               | vdqtp3 wrote:
               | How would that be "totally incorrect"? There are only 24
               | hours in a day. It's incorrect to claim that there's 25,
               | 26 or 27 hours in the day - even if it's useful and
               | proper, it's not technically correct.
        
               | tobylane wrote:
               | Think of it as a 24 hour day that starts at (to use UK
               | public transport's setup) 4:30. You want the timetable
               | and the users to agree on what 8am means, and that 8am
               | and the following 2am are the same work day of 24 hours.
        
               | _will_ wrote:
               | I'm making a guess here, but I think he means
               | specifically the (A) "arrives every weekday at 00:37"
               | part. That has a different implied meaning than (B) "the
               | train arrives every weekday at 24:37." (A) implies that
               | it will arrive every Monday through Friday mornings at
               | 00:37 but will not arrive on Saturday or Sunday mornings
               | at 00:37. (B) implies that it will arrive Tuesday through
               | Saturday mornings at 00:37, but not Sunday or Monday
               | mornings.
               | 
               | In the context of the train departure time, it's easy to
               | work out what is meant by a weekday 00:37 arrival, but if
               | they were divorced from each other for some reason,
               | weekdays at 24:37 would be easier to interpret.
        
               | soneil wrote:
               | right - 24:37 friday makes is read as "37 past midnight
               | on friday night" - which is friday night as humans
               | consume time, but saturday morning by the calendar.
               | 
               | Being awake past midnight brings up a few challenges with
               | calendars. My watch wil count a late (late) night walk
               | against tomorrow, not against today. As a human, I
               | consider "tomorrow" as "after I've gone to sleep", not
               | "after midnight". 00:37 is still very much tonight.
        
               | _trampeltier wrote:
               | I have seen 26:xx and 27:xx on work. If we work (very)
               | late, our work time system does write it like that.
        
               | the_imp wrote:
               | I've seen 25:00 and even 26:00 being used as times, in
               | Japan.
        
               | earthboundkid wrote:
               | I have also seen 24+ in Japan.
        
               | cbhl wrote:
               | For what it's worth, some US train and bus timetables
               | will totally write the arrival time as 00:37 or 12:37A.
               | It's a localization thing.
               | 
               | For example, this Pacific Surfliner timetable [PDF] from
               | Amtrack, where one train goes 11:36P -> 12:10A for one
               | leg
               | 
               | https://www.amtrak.com/content/dam/projects/dotcom/englis
               | h/p...
               | 
               | Here's a bus timetable [PDF] from Canada that goes 23:45
               | -> 00:00 -> 00:07: https://www.gotransit.com/static_files
               | /gotransit/assets/pdf/...
        
               | cynix wrote:
               | 25:xx (and even 26:xx) are commonly used in Japan for TV
               | programming to indicate that a segment is part of the
               | previous day's programme.
        
             | pistolpeteDK wrote:
             | Yep - we needed the distinction for a scheduling/rota app.
             | Some users had shifts that started at 24:00 and then ended
             | sometime during the night. Other users had shifts that
             | ended at 24:00. I know that it's common to use 23:59 in the
             | latter case, but IMO that's just a poor workaround; and I'd
             | argue that 16:00 -> 00:00 is a lot less obvious than 16:00
             | -> 24:00.
             | 
             | As for a shift that starts friday 24:00, you could argue
             | that the shift is actually a 'Saturday 00:00 shift', but
             | the users didn't see it that way; they are scheduling
             | Friday nights shifts and want an extra person late Friday
             | evening.
        
               | jcrawfordor wrote:
               | When I used to work in a 24/7 environment I would quip
               | that "it's not tomorrow until the morning crew takes
               | over." In a lot of practical situations I think it's
               | easier for people to think about the early morning hours
               | as being late the previous day. It tends to match shifts
               | and reporting cycles better.
        
         | Someone1234 wrote:
         | In my experience when people refer to ISO-8601, they generally
         | mean RFC 3339 instead anyway.
         | 
         | The original ISO has some very niche stuff in it people have no
         | interest in supporting. Whereas 3339 is pretty much just the
         | bread and butter of the format.
        
         | Macha wrote:
         | Yeah, there's enough software that only understands ISO-8601 to
         | be YYYY-MM-DDThh:mm:ss (with optional Z or +/-xx:xx for a
         | offset datetime), that I wouldn't rely on anything more niche
         | from the spec.
         | 
         | That does include the period definition format, which I know
         | will disappoint some people.
        
           | taylodl wrote:
           | > period definition format
           | 
           | You mean the milliseconds? You're correct that YMMV with
           | regards to libraries, but a lot of them handle milliseconds
           | as well.
        
             | Macha wrote:
             | No, I mean stuff like
             | 
             | 2007-03-01T13:00:00Z/P1M
             | 
             | For something that occurs on the first of each month.
        
               | taylodl wrote:
               | Oh - combining a date/timestamp and a duration, such as
               | xsd:duration
               | (http://www.datypic.com/sc/xsd/t-xsd_duration.html). I've
               | never seen them combined into a single string, though
               | there have been times when that would have been really
               | useful!
        
               | em500 wrote:
               | It looks like xsd:duration uses duration notation from
               | ISO8601. The rules for combining them or designating
               | recurring intervals are in ISO8601 section 4.4-4.5 [1].
               | Unfortunately, awareness and library support for ISO8601
               | interval notation are very sparse and most people/orgs
               | just roll their own.
               | 
               | [1] https://www.loc.gov/standards/datetime/iso-
               | tc154-wg5_n0038_i...
        
       | JdeBP wrote:
       | It's not _freely_ available, i.e. at zero cost. This is not the
       | same as not _publicly_ available, which it definitely is.
       | 
       | See https://news.ycombinator.com/item?id=26279292 .
       | 
       | This has been misrepresented both in the headline here, and by
       | some commenters both here and on Twitter. The original Twitter
       | post clearly talked about economic value and downloading copies
       | for free, _not_ about hiding things from the public. Notions of
       | economic value and charging the highest price that the market can
       | bear are a very different discussion to _not publicly available_.
        
         | anticristi wrote:
         | Honestly, I don't get why people are complaining. An ISO
         | standard costs fraction of what the developer's time reading
         | said standard costs. It's almost like complaining that
         | electricity and laptops are not free.
         | 
         | I would much rather like to hear if the _value_ that ISO
         | produces is proportional to what they charge. Also, are the
         | _incentives_ properly aligned by charging a fee?
        
           | andyana wrote:
           | > An ISO standard costs fraction of what the developer's time
           | reading said standard costs.
           | 
           | Well, what if I'm tinkering in my spare time? I think if you
           | want people to use a standard like this, you shouldn't charge
           | for access to said standard.
           | 
           | Or you can, but stuff like this comes up. Seems petty to me.
           | There are lots of people out there that don't have money for
           | this, and I can't think of any positives around that.
        
             | josefx wrote:
             | > Well, what if I'm tinkering in my spare time?
             | 
             | Most hobbies cost money? Most sports clubs charge money and
             | its not because they want motivated people to stay away .
             | 
             | > There are lots of people out there that don't have money
             | for this
             | 
             | There are people out there who don't have the money for a
             | PC, this group is far larger than any group that can't pay
             | a hundred for the exact text of the standard. Clearly your
             | anger should be directed at Microsoft, IBM, Apple, Google
             | and GNU for not delivering the Freedom (TM) development
             | environment everyone is owed.
        
               | andyana wrote:
               | Sorry, I didn't meant to come across as angry, I'm not.
               | I'm just disillusioned with the constant nickle and
               | dime'ing in this world. I get it, they need money, but in
               | a better world, we wouldn't be charging hobbyist's for
               | bits of standard data.
               | 
               | We can point fingers at other companies, or, if enough
               | people agree with me, we can pressure them to be less
               | greedy or we could start a new standard body that works
               | for us.
               | 
               | There's lots of things we can do if it bothers us. Doing
               | nothing, however, isn't interesting to me.
        
               | josefx wrote:
               | I might have overdone it in my response myself. At least
               | some ISO standards have draft versions lying around that
               | are freely accessible and close enough for most things. I
               | think the Wikipedia article on it also cites draft
               | versions. Most of the time you can find ways around
               | having the finalized standard itself unless you want to
               | go the extra mile.
        
               | HenryBemis wrote:
               | From experience, every time I have needed an ISO Standard
               | (even rare stuff like "ISO 15489-1:2016 Information and
               | documentation -- Records management -- Part 1: Concepts
               | and principles") I could always go to my client, ask them
               | to pay for the bloody thing, so I can show then what
               | needs to be done to be 'compliant'. I could alwasys spend
               | the $150 (and charge them) but I always wanted THEM to
               | retain the 'thing' when I walk away, because if I buy it,
               | then I keep it (and no pirated copy for them!)
               | 
               | Any company can afford to pay for the ISOs. It's not for
               | hobby (99% of the time).
        
               | matheusmoreira wrote:
               | > Most hobbies cost money?
               | 
               | Yes, real costs such as parts for a home server or model
               | aircraft. Not artificially scarce data that isn't even
               | supposed to be copyrighted anyway.
        
             | anaganisk wrote:
             | So show track location, cookies and show ads instead?
        
               | anticristi wrote:
               | ... only to find out later it was a click-bait that had
               | zero information.
        
           | MaxBarraclough wrote:
           | Yes, a software development company could easily afford the
           | fee. This misses the point. When we talk about the cost of
           | paywalling standards documents, that's not what we mean.
           | 
           | What about the paperwork and hassle of getting your employer
           | to pay up? Even if the company could easily afford it, this
           | is still a real barrier.
           | 
           | What about students, hobbyists, and FOSS volunteers? Why
           | should they be barred from access to the documents?
           | 
           | > It's almost like complaining that electricity and laptops
           | are not free.
           | 
           | That's completely disanalogous.
           | 
           | The ISO organization occasionally makes standards documents
           | available free of charge, e.g. obsolete versions of the Ada
           | programming language standard. Is that comparable to them
           | handing out free laptops?
           | 
           | > I would much rather like to hear if the value that ISO
           | produces is proportional to what they charge.
           | 
           | It's about the chilling effect, it's not about value for
           | money.
           | 
           | > are the incentives properly aligned by charging a fee?
           | 
           | Of course not. As Tim Sweeney said, _The value of standards
           | is in their adoption_. [0] When standards bodies are
           | deliberately introducing obstacles to accessing their
           | standards documents, the incentives are clearly not aligned.
           | 
           | A standards body should be incentivized to make the standards
           | as widely adopted as possible. An obvious precondition of
           | this is to make them as widely available as possible, yet
           | ISO's MO is to block access to standards documents until
           | payment is made.
           | 
           | Another problem is when laws reference such standards. It
           | should not be permitted for laws to reference any document
           | which is not in the public domain, but apparently that's not
           | how things work; standard bodies are empowered to paywall
           | part of a nation's laws. [1]
           | 
           | [0] https://news.ycombinator.com/item?id=26390040
           | 
           | [1] https://news.ycombinator.com/item?id=26390279
        
           | matheusmoreira wrote:
           | You're assuming every developer is part of the software
           | industry. Not everybody gets paid to work on software.
           | 
           | I've contributed some code to ZBar. During my research I
           | needed to read the QR code specification but the latest
           | version was not publicly available. I certainly wasn't going
           | to pay hundreds of dollars for some document just so I could
           | contribute code to an open source project on my free time.
           | 
           | I think I managed to find an older version and studied that
           | instead. I remember the standard didn't even contain the
           | information I wanted to know, only vaguely-worded hints and
           | footnotes. Can you imagine paying for this document only to
           | find out the authors didn't even consider your use case? I
           | found other resources on the internet and managed to cobble
           | together enough understanding to solve my problem.
        
             | anticristi wrote:
             | A document not containing all details necessary for an
             | implementation is IMHO not a standard and should not be
             | charged for. I'm looking forward to someone asking a refund
             | from ISO for an incomplete standard. :)
             | 
             | But let's assume ISO would publish only high-quality
             | standards. Wouldn't those be worth their salt?
             | 
             | While I do understand that paying for any document is an
             | issue for hobbyist, let's be honest. Every hobby has costs.
             | A good hobby gardener probably spends $100 on books alone.
             | So, if the standard is good, and really teaches you
             | something, I would buy it even for a hobby.
             | 
             | P.S. Funny that you contributed to ZBar. Our paths cross
             | again. :)
        
               | matheusmoreira wrote:
               | The problem with charging for standards is the fact that
               | people _must_ implement them. Since we 're all supposed
               | to follow standards, they should be public documents like
               | IETF RFCs. Charging money for these things effectively
               | erects a massive barrier to entry.
               | 
               | P.S. Yes, I wrote some code to allow ZBar to decode
               | binary data. The ISO standard contributed to my
               | understanding of QR code encoding modes and text encoding
               | metadata. Are you also a contributor?
               | 
               | In case anyone wants to know more about this stuff, I
               | wrote about my research in a Stack Overflow answer:
               | 
               | https://stackoverflow.com/a/60518608/512904
        
               | PinguTS wrote:
               | But then: who pays for the infrstructure? For the people
               | who does the administration of those standards?
               | 
               | It's not that the realtor takes no money for the
               | apartment because you do the administration for
               | standards.
               | 
               | Just take a closer look at the business model of the
               | IETF. The IETF receives about $6 Million this year doing
               | the administration from the ISOC. The ISOC members define
               | what "standards" are becoming standards, or should I say
               | "dictates".
        
               | dwheeler wrote:
               | > But let's assume ISO would publish only high-quality
               | standards. Wouldn't those be worth their salt?
               | 
               | Paying ISO has nothing to do with creating or
               | distributing the standards. The developers of the
               | standards are, in all cases I know of, not paid by ISO.
               | 
               | I agree that there needs to be some money for
               | infrastructure. It shouldn't cost very much for a PDF
               | hosting service for publicly-available PDF.
        
               | groby_b wrote:
               | No, they wouldn't be worth paying for.
               | 
               | The value of a standard is that it is universally used.
               | ISO standards are only used by people who can afford to
               | pay for them. The very act of charging for them reduces
               | their value.
               | 
               | The requirement of standards adherence for government
               | contracts can raise interesting questions around paid-for
               | standards, too.
               | 
               | Also, the point of standards isn't "learning". The point
               | is to agree on common definitions. It enables interop,
               | that's it.
        
         | ChuckMcM wrote:
         | I wonder if fair use would allow me to show one page of the
         | standard on my web site. I also wonder if I could find 800 like
         | minded people to show one page on their web site :-)
        
           | floatingatoll wrote:
           | You would be better off creating a musical number where
           | different actors are different fragment commands, like R and
           | T and so on, and then using that format to present the entire
           | spec verbatim. Certainly you'd be able to claim
           | transformative!
        
           | xmprt wrote:
           | Fair use doesn't have anything to do with the percentage of
           | copyrighted content displayed. Otherwise 100 people could
           | just individually display 1 minute of a Disney movie and
           | that's obviously not going to happen.
           | 
           | For fair use to apply, you need to critique, parody, or
           | otherwise transform the original material in a way that adds
           | something. If you found 800 like minded people then you'd be
           | facing 800 different lawsuits that you'd probably all lose.
        
             | ChuckMcM wrote:
             | You make a fair point, it is merely a hack to evade a silly
             | rule. Since facts are not copyrightable the "right fix" is
             | to right an identical standard and make that free, then
             | have people adhere to it rather than the ISO one.
             | 
             | That said, I'm pretty sure I could find 800 people who
             | would critique the typography :-). Each usage would be a
             | page that says, "Look at this random page from a standard
             | (page <xxx> by the way), do those serifs really help
             | anything? How is it even readable with the way they break
             | the text in their paragraphs."
        
               | rsj_hn wrote:
               | > You make a fair point, it is merely a hack to evade a
               | silly rule. Since facts are not copyrightable the "right
               | fix" is to right an identical standard and make that
               | free, then have people adhere to it rather than the ISO
               | one.
               | 
               | This is correct. Instead of cutting and pasting the ISO
               | text, you can explain what the conclusions and rules are.
               | In doing so, you will have the opportunity to both add
               | value by explaining things better and subtract value by
               | explaining things in a worse way. I think it will turn
               | out to not be so easy to publish an "identical" standard
               | in your own words, but it's worth the effort to
               | disseminate free standards.
        
         | dwheeler wrote:
         | ISO calls standards that are freely available to the public as
         | "publicly available". It's even in the URL for their list:
         | https://standards.iso.org/ittf/PubliclyAvailableStandards/
         | 
         | So using ISO's own terminology, standards available to the
         | public are "publicly available".
         | 
         | IN ADDITION: I think that's the right terminology. If a
         | standard is not freely available to the public, it is _NOT_
         | publicly available. When there were only a few standards, and
         | you had to pay for expensive typesetting to get a paper
         | document, the costs made sense.
         | 
         | But in the modern world we need to use a massive number of
         | standards, there is no need for the typesetting (or the paper),
         | and the people who developed the standards are not being paid
         | by ISO's royalties. The standards world is nothing like
         | publishing fiction (where the author is normally paid). All
         | standards should be publicly available.
        
           | kube-system wrote:
           | > The standards world is nothing like publishing fiction
           | (where the author is normally paid).
           | 
           | ... then think about it like publishing non-fiction, where
           | the author is normally paid.
           | 
           | :)
           | 
           | Yes, ISO is old-school. But why does it really matter to
           | anyone else whether they charge? The standards that most
           | software folks are concerned about are either replicated
           | elsewhere (like rfc3339), or don't really matter.
        
       | m-p-3 wrote:
       | I guess we'll eventually see IsoHub as a branch of SciHub?
        
         | arthur2e5 wrote:
         | Library genesis has a standards section, although for some
         | reason it's spelled "standards". And it's not that standard-
         | rich.
         | 
         | For now Google seems to do the standard-pirating job better,
         | partly because it indexes Baidu's Wenku ;)
        
           | colejohnson66 wrote:
           | A quick look shows libgen saying "standards" (the correct
           | spelling) in multiple places. The URL, OTOH, says "standarts"
           | (note the "t")
        
         | agul29 wrote:
         | IEC, ISO and BS standards compilations are are all over the
         | torrent sites.
        
         | boshomi wrote:
         | IsoHub.org belongs to Cuba.
         | 
         | StandardsHub.org is occupied by ISO
        
       | ademarre wrote:
       | I would not have my current career if not for the information
       | freely available online.
       | 
       | The most useful knowledge I've acquired about building things on
       | the internet came not from framework/library/API docs, but from
       | RFCs published by the IETF.
       | 
       | Industries that are more reliant on non-free standards are surely
       | worse off because of it.
        
       | robocat wrote:
       | It looks to me that about half the revenue for the organisation
       | comes from selling ISO standards.
       | 
       | 2019 revenue of ISO - figures in '000s of CHF (edit 1CHF =
       | 1.08USD) - details from page 63 of
       | https://www.iso.org/files/live/sites/isoorg/files/store/en/P...
       | 21181 Membership fees       12924 *Royalties received from
       | members selling ISO standards*        6592 *Revenue - net sales*
       | 2286 Funding of capacity building projects         273 Funding of
       | ISO strategic projects        (99) Financial revenue (loss)
       | =====       43157 TOTAL REVENUE
       | 
       | Ideally standards should be free, but how the organisation could
       | survive on only half its current revenues would need to be
       | addressed.
       | 
       | Edit: removed subtotal rows "34105 Revenue from members", "2559
       | Funding of ISO projects"
        
         | javajosh wrote:
         | Very nice, thanks. $43M of revenue is a lot more than I
         | expected. I wonder what they spend it on?
        
           | speedgoose wrote:
           | They are based in Geneva, so 43 millions should be just
           | enough for 3 young employees in a basement and an internet
           | connection.
           | 
           | More seriously, they spend almost everything on operations.
           | It doesn't seem that much to me, good employees are very
           | costly.
        
         | danbruc wrote:
         | So ISO has 165 member countries, if each one would pays 80k per
         | year more than the current membership fee, that would cover the
         | lost revenue from sales. That seems almost like a rounding
         | error to me.
        
           | JdeBP wrote:
           | You need to think it through further. Where do the member
           | bodies get this money from?
           | 
           | No, they aren't all taxpayer funded. In some countries they
           | are entirely private organizations. ANSI is a non-profit
           | private company, for example. And the ones that are are
           | taxpayer funded are not necessarily _wholly_ so. The BSI gets
           | grants from the U.K. government, for example, but is far from
           | wholly funded by it.
           | 
           | Standards Australia made just under AUD7 millions in 2017
           | (for example) from selling copies of standards, via
           | subcontractor publisher SAI. This was just under a quarter of
           | its total revenue for the year. Nearly all that would be gone
           | were ISO to start giving away copies for free, and yet SA
           | would be expected to pay an extra AUD0.1 million in ISO fees
           | at the same time.
           | 
           | * https://www.standards.org.au/about/governance/annual-
           | reviews
           | 
           | So what's your proposal for making up for this lost revenue
           | stream as well as paying higher ISO fees? Across all of those
           | 165 countries.
        
       | em500 wrote:
       | There's a free draft version from the Library of Congress:
       | 
       | https://www.loc.gov/standards/datetime/iso-tc154-wg5_n0038_i...
       | 
       | https://www.loc.gov/standards/datetime/iso-tc154-wg5_n0039_i...
       | 
       | Do take note of the caveats on the cover.
       | 
       | (Not suggesting that relying on the free draft is great, just
       | providing a reference for people interested in the actual content
       | of ISO 8601, rather than the principles around this issue. The
       | spec is a good read for people interested in datetime
       | representations.)
        
       | hbrav wrote:
       | Isn't this going to hamper companies in poorer countries from
       | adopting these standards?
        
       | cobaltoxide wrote:
       | I suspect that, typically, when people mention ISO-8601, they
       | really mean simply "YYYY-MM-DD" and are not seeking to
       | incorporate all the other complications and details of the
       | standard.
        
       | koblas wrote:
       | One should use RFC 3339 dates which have a formal grammar and and
       | open standard.
        
         | chrismeller wrote:
         | Absolutely. They even reference ISO 8601 in the spec when
         | specifying that the T and Z can also be lowercase.
         | 
         | As far as I'm aware, the only difference between the two is
         | something related to the - in the time zone offset... though
         | I've also seen plenty of libraries parse 8601 with and without
         | -, so it seems not to be _super_ important.
        
           | d0mine wrote:
           | rfc3339 is a profile of iso8601 i.e., every rfc3339 date is
           | also iso8601 date but not in reverse
        
             | chrismeller wrote:
             | Do you have an example of an 8601 that is not 3339
             | compliant? I've never looked at any of the abbreviated
             | formats, but if you're giving a full date, time, and offset
             | it seems identical (aside from that -).
        
               | ncallaway wrote:
               | Sure!
               | 
               | 2021-W07-5
        
               | chrismeller wrote:
               | Ahh, you got me. I thought I had mentioned that I had
               | never looked at any of the formats for shorter than full
               | date, time, and offset strings. D'oh!
        
               | ncallaway wrote:
               | I'm _fairly_ sure that 2021-W07-5T00:00:00Z or
               | 2000-W03-7T01:23:45.678+09:00 would be a valid full ISO
               | date time and offset as well, but I haven't checked the
               | specification.
               | 
               | Luxon will happily parse 2021-W07-5T00:00:00Z and tell me
               | that it represents 2021-02-18T16:00:00.000-08:00, so I
               | think it's valid.
        
               | [deleted]
        
               | Darkphibre wrote:
               | "Funny" story about a _binary_ 8601 implementation.
               | 
               | I was architecting a true-realtime telemetry pipeline for
               | a AAA videogame studio (later used by a dozen or so
               | franchises for all titles by the publisher). It had a
               | requirement for subsecond client notification of per-user
               | aggregated statistics, including complicated event
               | interactions (such as ensuring the grenade that you threw
               | that killed someone, would only be attributed to you if a
               | prior event hadn't already occured), which resulted in
               | sequentiality guarantees. But with that, we could get rid
               | of windowed event processing (and those inherent
               | latencies), and instead treat them as a true stream of
               | events. Keep in mind we could support up to 400ms one-way
               | latency, so we only had 200ms for processing/routing in
               | the client and in the cloud. I measured client code in
               | ms.
               | 
               | Annnyways. The principal in our org insisted that time
               | not be be transmitted as an epoch. I argued for weeks,
               | but he was insistent... "No magical offsets to arbitrary
               | dates. ISO8601. Do it." He came from and worked most
               | heavily with the web services group. Apparently some
               | point in the past, services had picked the wrong epoch
               | and there was confusion (I still can't understand how
               | that wouldn't be caught right away, there's only a few
               | standard epochs that are quite different in resulting
               | time)? The events in my design were bit-packed using a
               | competing protocol to Protocol Buffers... there's no way
               | I was doubling the payloads just to store a timestamp as
               | a string.
               | 
               | So I read and re-read ISO8601. And it dawned on me:
               | ISO-8601 never specifies the encoding. It specifies the
               | order in which information is conveyed, _and if in text_
               | , the delimiters to use. One example clue is in the
               | definition of basic format, and the call-out that most of
               | the document leverages plain text to communicate their
               | ideas.
               | 
               | basic format format of a date and time representation or
               | date and time format representation comprising the
               | minimum number of time elements necessary for the
               | accuracy required. The basic format should be avoided in
               | plain text.
               | 
               | I ended up proposing the most terrible hack I've had to
               | live with. It involved bit-packed 64-bit integer that
               | stored: 12 bits for year, 4 bits for month, 5 bits for
               | date, 5 bits for hours, 6 bits for minutes, 6 bits for
               | seconds, and the remaining bits for an integer that
               | stores the sub-second fraction. We lost a few orders of
               | magnitude resolution on that end due to the
               | inefficiencies of the earlier packing, but... it worked.
               | And it was in the right order. And there were no "magic"
               | epochs to dissuade the principal engineer.
               | 
               | Most importantly, it sailed through the review process.
               | 
               | Still makes my skin crawl a decade later. And I secretly
               | suspect you technically _have_ to have a T between date
               | and time to be ISO8601 compliant, it 's been a long while
               | since I read the spec. But there you go.
        
               | opk wrote:
               | Your format will have had the advantage of inheriting the
               | ISO8601 scheme for representing leap seconds (60 in the
               | seconds component). With an epoch, you have to either
               | pretend leap seconds don't exist (typical on Unix), know
               | when they all were before you can print a time or accept
               | the drift (common with GPS units).
        
               | colejohnson66 wrote:
               | But... if you're sending the timestamp down to sub-second
               | precision, the receiving computer has to compare that
               | number to their own time (which is based on an epoch).
               | So, an epoch is used either way. It sounds like a
               | convoluted solution to a problem that doesn't need to
               | exist.
        
               | Darkphibre wrote:
               | Hmm? This timestamp is known to be local-time, used for
               | measuring durations-between-events on a single session,
               | and not used for cross-session reporting. Time would be
               | compared from one event to the next.
               | 
               | Cross-session reporting (such as calculating DAUs or
               | MAUs) reports on the timestamp from the ingestion
               | service, which is applied at the batch level before a
               | batch of events is placed on the event hub for routing
               | (events are batched and transmitted every 16ms off the
               | client). Typically you can get away with treating
               | everything that happened in the same simulation frame as
               | having happened instantaneously... though we use a
               | monotonically incrementing guaranteed-unique sequence
               | identifier for processing using a high-water-mark (one
               | stream is at-least-once sequentially-guaranteed with
               | retries, while the other stream is lower priority and at-
               | most-once sequentially-guarantied without retries).
               | 
               | No amount of ISO spec will help with client clocks being
               | completely arbitrary. :D The ingestion service clocks are
               | NTP synced to datacenter-hosted atomic clocks, but we
               | still see a few-second skew here and there.
               | 
               | I've even done research into how often they drift
               | backwards in time (but that doesn't really happen, since
               | NTP will just slew the system time by delaying, or adjust
               | the clock massively on startup before the game launches).
        
             | seagreen wrote:
             | This gets repeated a lot but unfortunately isn't true.
             | 
             | See the spec: https://tools.ietf.org/html/rfc3339
             | NOTE: ISO 8601 defines date and time separated by "T".
             | Applications using this syntax may choose, for the sake of
             | readability, to specify a full-date and full-time separated
             | by         (say) a space character.
             | 
             | Someday someone reading this is going to set out to make a
             | new, small specification out of a huge specification.
             | Reader, when you start to feel the temptation to make just
             | the tiniest improvement-- resist! It's way more useful if
             | it's actually a true subset.
             | 
             | Happily this particular issue is be easily fixed. Let's
             | make a new spec, subsetting both ISO 8601 and RFC 3339.
             | 
             | I hereby introduce... RFC 3339T, which is exactly like RFC
             | 3339, but you have to use a T instead of a space.
             | 
             | EDIT: joshuaissac spotted another difference.
             | 
             | Also I made a repo so we're official:
             | https://github.com/seagreen/rfc-3339T
        
               | joshuaissac wrote:
               | RFC 3339 also allows the offset -00:00 where the UTC time
               | is known but the local time is not. The ISO standard does
               | not permit this.
        
               | seagreen wrote:
               | Ooh, interesting.
               | 
               | I made a GitHub repo for the new spec and credited you
               | (https://github.com/seagreen/rfc-3339T). Let me know if
               | you have more suggestions!
        
       | cies wrote:
       | Just judging from what I read iso8601 is based off of rfc3339 (as
       | i assume the "request for comments" phase is before the iso
       | standardization). ISO slightly improved the rfc, but it is
       | largely the same. "Internet RFCs" (if thats the right word for
       | the phenomenon) are free, that's the whole point. ISO has taken
       | the free (as in speech) and is now selling a derivative work.
       | 
       | I think we need to call Stallman on this one. We need Copyleft
       | licenses on our standards to prevent this kind of corporate
       | freeloading.
       | 
       | ISO just sunk in my esteem, silly dinosaurs. I hope they get
       | replaced by something that makes more sense.
        
         | chrisseaton wrote:
         | > Just judging from what I read iso8601 is based off of rfc3339
         | (as i assume the "request for comments" phase is before the iso
         | standardization).
         | 
         | No that's not how this works. The ISO one is from the 80s, the
         | IETF one from the 2000s. It's the other way around. The RFC is
         | a profile of the ISO.
         | 
         | > ISO slightly improved the rfc, but it is largely the same.
         | 
         | This is not a true statement.
         | 
         | > ISO has taken the free (as in speech) and is now selling a
         | derivative work.
         | 
         | This is also not a true statement.
        
           | cies wrote:
           | thanks for correcting!
        
         | superjan wrote:
         | As far as the ISO is concerned, IT business is just one of many
         | businesses for which they manage the standards process. ISO has
         | to pay the bills somehow, don't they? If they would not charge
         | the users of the standards the bill would go to governments
         | (effectively taxpayers). As far as taxpayers are concerned, if
         | the industry needs standards, they should pay for them
         | themselves. There is merit to the argument that free standards
         | stimulate innovation, but if governments subsidize the
         | industry, they will prefer to subsidize their national
         | industry, not world wide.
        
       | dharmab wrote:
       | That's how the ISO standards body works- you pay access for the
       | spec to fund the ISO's development of standards.
       | 
       | https://www.youtube.com/watch?v=nAsrsMPftOI
        
       | cogwheel wrote:
       | The same is true for the standard that sets A to 440 Hz.
       | 
       | Though they spoil the plot in the abstract.
       | 
       | https://www.iso.org/standard/3601.html
        
         | matheusmoreira wrote:
         | Huh, so this is where musical notes come from? I thought they
         | had always been like that, never expected to find some ISO
         | standard behind it all.
        
           | kube-system wrote:
           | Most standards are not where ideas come from, but instead,
           | they are simply people who took the time to write down an
           | idea someone else had.
           | 
           | https://en.wikipedia.org/wiki/A440_(pitch_standard)#History_.
           | ..
        
           | Jap2-0 wrote:
           | Putting aside that notes don't really have to be in tune to
           | be notes, this is not where A=440hz originated.
           | 
           | Correction: upon further research, this is where 440hz
           | originated. However, it was not the original standard (or
           | where musical notes come from), and I find the history
           | interesting, so I'm going to post it anyway.
           | 
           | Tuning used to be based off of whatever instrument was not
           | easily tunable (the piano or organ), or some other instrument
           | (oboe?) if there was none. For much of musical history tuning
           | was significantly lower than A=440, albeit with a lot more
           | variation; however, it tended to rise[0][1] in order to
           | create a more brilliant-sounding timbre (particularly in
           | larger venues), especially among instrumental pieces. This
           | led to some contention, especially with vocalists who found
           | the increasingly-high notes more and more difficult to sing.
           | There were several efforts to readjust tuning to something
           | more reasonable, but ultimately none of them worked for long.
           | Frequency was actually orignically standardized in Article
           | 282, section 22 of the Treaty of Versailles.[2] This may not
           | make a lot of sense at initial glance, but when thinking
           | about it as how good orchestras sound, it does make some
           | sense as an economic policy
           | 
           | This is where I originally messed up, though. The Treaty of
           | Versailles references something else (which I don't have a
           | link for), but which, per [1], standardizes to... 435hz. But
           | again this crept up, and apparently the US and UK did some
           | shenanigans with interpreting it (the UK changed the
           | temperature to get it to 439hz, I haven't found out precisely
           | what the US did), and there was again some debate. Some
           | people gave up and standardized with the UK to 440hz, some
           | stayed at 435, and eventually the ISO did step in and
           | standardized again on 440.
           | 
           | So we may all be breaking international law by tuning to
           | 440hz.
           | 
           | [0]
           | https://en.wikipedia.org/wiki/Concert_pitch#Pitch_inflation
           | 
           | [1] https://www.youtube.com/watch?v=BzznBt8tVnI
           | 
           | [2] https://en.wikisource.org/wiki/Treaty_of_Versailles/Part_
           | X#A...
        
         | chrismorgan wrote:
         | Eww, only 0.5 Hz tuning accuracy on that 440 Hz? That's two
         | cents (2/100 of a semitone). As an amateur with a not-terribly-
         | high-quality piano I'd be ashamed to tune it two cents off; you
         | really want to get within one (and you need the difference
         | between same-pitched strings to be a good deal finer than
         | that). I'd expect less than half a cent from a professional
         | tuner on a decent-quality piano.
         | 
         | Unless the spec goes into more restrictive detail, you could
         | tune a piano's A440 honky tonky (roughly: one string 439.5 Hz,
         | one string 440.5 Hz) and still be ISO-16:1975-compliant.
        
         | xyproto wrote:
         | 440 Hz?! Preposterous. 432 for life!
        
           | dkdbejwi383 wrote:
           | For the uninitiated:
           | https://www.youtube.com/watch?v=EKTZ151yLnk
        
         | wincy wrote:
         | Only 38 Swiss Francs (~40USD, ~35EUR) to review this standard!
         | So if I want to make an ISO standard instrument do I need to
         | buy all the other notes too?
        
           | anticristi wrote:
           | Only if you don't know how to multiply and divide frequencies
           | by 2^(1/12).
        
           | cogwheel wrote:
           | no, you just need to multiply 440 by (12th root of 2)^k,
           | where k is the number of half-tones above (pos) or below
           | (neg) A440
        
             | rezonant wrote:
             | only if it's equal temperament :-)
        
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       (page generated 2021-03-09 23:01 UTC)