• icelimit@lemmy.ml
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    36 分钟前

    We will also use 3 sticks to tell the time.

    Time is linear. But this will be circular.

  • ragas@lemmy.ml
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    3 小时前

    The numbers on the clock actually make a lot of sense.

    12, 24 and 60 are highly composite numbers (https://en.wikipedia.org/wiki/Highly_composite_number).

    Imagine using numbers in a world where most people have no real understanding of fractions.

    That is also the reason why you see the same or similar numbers as common screen refresh rates. 24, 48, 60, 120 and 240.

    The 12 hour clockface design is that way because it is a similar design to that of a sundial, so people did not need to learn a new way to read the time. This also meant that for readibility reasons it was beneficial to only have 12 numbers.

  • Armillarian@pawb.social
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    6 小时前

    Its possible to create a new time format/ system, the problem is how to standardise it everywhere

  • SaltyIceteaMaker@lemmy.ml
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    8 小时前

    24 hours cause Egyptians split their sun dials and star decans into 12 parts each (probably cause 12 is divisible by 2, 3, 4, and 6) which the greeks later turned into equal length hours (before the length would change over the year)

    60 minutes due to Babylonian base-60 math

    12 hour format is just tradition at this point, but derived from the sun dials which only worked at day, so half the time, and the star decans which only worked at night, so the other half.

    pretty much every country except the US uses the 24h format on digitial clocks now

    also the dude in the meme was kinda right: the day will be divided into 12 segments. and the night will too. at least originally

    • /home/pineapplelover@lemmy.dbzer0.com
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      5 小时前

      This all originated from the Ancient Sumerians btw. They passed it down to Babylonians.

      Edit: A bit of history from what I learned from listening to Fall of Civilizations in the shower.

      The Ancient Sumerians invented this sexagesimal system because if you look at your hand, you notice 12 knuckles (this is obviously excluding your thumb, as that is used for counting each knuckle), and with your other hand you will raise a single finger for every time you finish counting past 12 knuckles on your left hand. So raising your thumb is 12, thumb and index is 24, and so on, until you reach 60.

    • ethaver@kbin.earth
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      7 小时前

      It’s called a “highly composite number!” I read up on a lot of this stuff while learning about numerology and other esoteric spiritual traditions!

  • Zamboni_Driver@lemmy.ca
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    17 小时前

    24 hour analogue clocks exist. I have a 24 hour watch which only revolves once per 24 hours. It’s a disadvantage though.

    The reason why clocks and watches display 12 hours at a time is so that they have space to show finer resolution of time. If you try to cram 24 hours onto a clock, it’s not easy to tell if it’s 12:20 or 12:30 at a quick glance.

    Most people are not too stupid to be aware of if they are in the first 12 hours or second 12 hours of a day, so they benefit from a watch with 12 hour timescale and finer resolution so that they can more easily see exactly what time it is.

    And for all the dummies posting about 12h vs 24h clocks. In the sense of saying that it’s 1pm vs 13:00. That’s not what this meme is even describing. This is about the physical layout of a clock or watch face.

    • CommanderCloon@lemmy.ml
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      6 小时前

      You could get a jump hour watch, meaning the hour isn’t a slowly moving hand but instead jumps from 6 to 7 with a jump, avoiding potential mixing up of hours, it would make it easier to read those 24h

      Like this watch

      Edit: The original watch linked is a weird one, it’s not a jump hour watch but instead it has a jumping dial to turn it from a 12h to a 24h, very neat! I can’t seem to find a 24h jump hour watch apart from this 30k breguet lol

    • riot@fedia.io
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      15 小时前

      I can’t believe this is the first I’m hearing of 24-hour analogue clocks! That’s so cool. But yeah, I see your point about it now allowing for very much precision at a glance.

  • altphoto@lemmy.today
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    15 小时前

    Alright, I’m calling a 4.1666666666666666666666666666 metric hour meeting to discuss this!

    The meeting might run to a full 5 metric hours.

    • DeathByBigSad@sh.itjust.works
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      4 小时前

      “Hey sweetie, please come home by Hour 89.58333333/100 otherwise I’m gonna have to ground you for a week, love you!”

    • bountygiver [any]@lemmy.ml
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      13 小时前

      there’s 86400 seconds in a day. If we use a new unit that is slightly shorter than a second as a metric second, we can do 100000 metric seconds a day, with 100 metric seconds per metric minutes, and 100 metric minutes per metric hour, and each day having 10 metric hours.

      Your 1 hour activity now takes 0.5 metric hours (it might be 20% longer, but that’s arbitrary anyways, we rounded them to the closest hour anyways)

      We are only used to the current system because we have been using it.

  • IWW4@lemmy.zip
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    19 小时前

    It is wild how people refuse to use the 24 hour clock. It is so logical and easy. kind of like the metric system……

    • AA5B@lemmy.world
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      18 小时前

      It only solves a small part of the issue at the cost of less convenience and consistency. Propose a “metric” time that solves more of this issue problem and I’m all for it

      • groet@infosec.pub
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        18 小时前

        less convenience and consistency

        What? … seriously, which convenience and consistency are you talking about.

        24h only has one “inconsistency”, going from 23:59 to 0:00. How is that less consistent than 12am being after 11:59pm and 12pm being after 11:59am. Solves all parts of the issue except for one. Which is a lot better than the 12h system.

        • froh42@lemmy.world
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          3 小时前

          Heh thanks for explaining it, I never knew if noon was 12am or 12pm. In German we say “11 in the morning”, “12 o Clock (noon*)” , and “1 o Clock (in the afternoon)”

          But typically we don’t say whether it’s am or pm, it’s clear from context if “i need to be in the work meeting at 9”

          Clocks, TV listings, my work timesheet read 24h times. We read 15:00 as “three” most of the time.

          Btw some software tools (my timesheet for work) differnciate between 0:00 and 24:00. I can work (theoretically) from 0:00 to 8:00 (8h in the night to morning) and from 16:00 to 24:00 (8 hours from afternoon to midnight).

          So 0:00 and 24:00 are the same moment but thought to belong to the next or previous say, respectively.

        • 8uurg@lemmy.world
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          12 小时前

          This has messed with me for the longest time. 24h just wraps around at 24, simple modulo 24 arithmetic.

          12h? The hour and am / pm wrap around independently, and hence I am always confused whether 12pm is supposed to be midnight or noon. Zero based would have made more sense (with x pm being x hours after noon…)

        • BakerBagel@midwest.social
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          17 小时前

          Why are the 60 minutes in an hour but 24 hours in a day? What functional difference is there between tne 12 and 24 hour clock? Are you showing up to your friend’s dinner party at 6am because you weren’t sure what time they wanted to start dinner? Are you unsure if your picnic is supposed to be right after midday or the middle of the night? Maybe your friend wanted to meet up for coffee and a bagel when you normally go to bed instead of right before you head off for lunch

          • froh42@lemmy.world
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            3 小时前

            Because 12 and 60 are great numbers to divide. You can take a half of it, a third and a quarter and still get whole numbers.

            Iirc the French did try decimal time at one time, it was not convenient.

          • groet@infosec.pub
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            13 小时前

            I asked why the am/pm system is apparently more convenient and consistent than the 24h system. I didn’t ask about 24h in a day and 60min in an hour.

            What functional difference is there between tne 12 and 24 hour clock?

            You need 2 numbers and 2 letters to accurately specify time in the 12h clock instead of just 2 numbers. Seems convenient to me.

            • BakerBagel@midwest.social
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              13 小时前

              You don’t need the am or pm 90% of the time because obviously a lunch date is happening sometime around noon, not midnight. A lunar eclipse or meteor shower isn’t visible while the sun is up, or a midnight snack isn’t happening in the middle of the day. Obviously if you are talking trains and flights, you need AM and PM. But people who are used to 12 hour time don’t want to figure out when 16:00 is, so they don’t.

              • yetAnotherUser@discuss.tchncs.de
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                1 小时前

                Fun fact: Many countries use both systems actually.

                For speaking, it’s quicker to say something like: “The party starts at 8” instead of “The party starts at 20 o’clock”.

                For writing though, you would never use the 12 hour system.

              • AlexanderTheDead@lemmy.world
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                11 小时前

                If you know basic addition and you know how a 12 hour clock functions, then you know how a 24 hour clock functions. If you can’t figure it out, that doesn’t make it inconvenient, it just makes you incredibly stupid.

  • Admetus@sopuli.xyz
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    21 小时前

    I get the joke, but the sundials of ancient civilisations precluded clocks.

  • s@piefed.world
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    17 小时前

    Keep it simple and just measure in terms of seconds since the Big Bang. The current time is 435,884,579,968,052,736 seconds, easy peasy

    • hansolo@lemmy.today
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      17 小时前

      I never confirmed this, but I noticed that in parts of West Africa, people wouldn’t say “afternoon” until after 1:00pm. Since greetings were important, I started noticing it more and more when peoe would say “good morning” during lunch at 12:30pm. As if the 12 noon hour is still part of the time segment.

  • lime!@feddit.nu
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    20 小时前

    maybe this is because i grew up in a house that had a clock with hands but no numbers, but wth do you mean “the 6 means 30”.

    analogue clocks consists of two progress bars. the numbers are just for convenience.

  • BenevolentOne@infosec.pub
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    19 小时前

    My pet theory is (circa 10000 BCE) that ‘houses’ and ‘hours’ are related words, the 12 hour clock matched the zodiac, each hour/house was 1 Assyrian ‘watch’ and they had no trouble day or night (constellations at night, sundial during the day), they were easy to build, easy to communicate, easy to understand and efficient.

    Then the Egyptians stole the technology (Circa 6000BCE) said ‘12 hours in a day? I got you bro’, fucked it up and it all went downhill from there.

    Feel free to quote me in your prize winning scientific paper.

    • Hoimo@ani.social
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      15 小时前

      How important is it to your theory that “hour” is related to “house” in… ancient Assyrian language? Because they’re completely unrelated in English, “house” coming from Germanic hus and “hour” coming from French ore. If we look at ancient Greek, the two are hoora for “hour” and oikos for “house”. I think English post-vowel shift has to be the first language where those two even sound similar.

      • BenevolentOne@infosec.pub
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        12 小时前

        Not central, just suspicious, but… this is ‘house’ as in astrological house as in the first part of the word ‘horoscope’, not house like a house you live in.

        My background in linguistics consists of a couple chompsky soft-science books and a love of tolkien, but if you actually know something and wanna chat I’d honestly love to dig in on this seriously. DM me.