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[-] folekaule@lemmy.world 95 points 6 months ago

At least our hours are the same length regardless of latitude now, so let's be grateful for that.

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[-] WanderingThoughts@europe.pub 86 points 6 months ago

IIRC they counted the bones in their fingers using their thumb and that gives 12. The first sundial was around the equator and there is always light for half a day, so half a day becomes 12 hours.

To count large numbers often one hand was used to count using 5 fingers and the other to count the bones, so you get 5x12 for 60 minutes.

[-] WolfLink@sh.itjust.works 53 points 6 months ago* (last edited 6 months ago)

AIUI there was an aspect in the divisibility of the numbers being convenient.

12 is divisible by 2, 3, 4, and 6. 60 is divisible by 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30.

10 is divisible by 2 and 5. 100 is divisible by 2, 4, 5, 10, 20, 25, and 50.

If you want to minimize dealing with fractions, 12 and 60 are far more convenient than 10 and 100.

[-] WhatsTheHoldup@lemmy.ml 9 points 6 months ago* (last edited 6 months ago)

That's an interesting thought, but I believe it to simply be a coincidence.

The base 12 counting being based on counting the division of your fingers is historically verified, but if the division aspect was so compelling to them you'd expect it to carry forward into their writing system.

By the time you get cuneiform math though, they actually go back to base 10.

https://images.app.goo.gl/9GR6VEiT7GHYF3KaA

As you can see base 12 is not in the written system, or for written mathematics. It just was convenient for counting on their hands.

They used mixes of base 10/base 12 and base 60.

Base 10 would be used go determine the symbols for a specific "digit" in base 60.

So similar to how our 13 is 1 ten and 3 ones, their 13 was the symbol for 10 then 3 symbols for 1. 13 = 𒌋𒁹𒁹𒁹 But 73 would be written 𒁹 𒌋𒁹𒁹𒁹

Which would be interpreted as 1 sixty and 13 ones, or 60 + 13

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[-] Corn@lemmy.ml 61 points 6 months ago
[-] edgemaster72@lemmy.world 46 points 6 months ago
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[-] capuccino@lemmy.world 23 points 6 months ago

Why the 'IIII' insted of 'IV'?

[-] TheReturnOfPEB@reddthat.com 6 points 6 months ago

i'm pretty sure that IV is a modern typographic thing

[-] NikkiDimes@lemmy.world 18 points 6 months ago* (last edited 6 months ago)

I've also heard that, because in Latin IV is the beginning of "IVPPITER" (Jupiter), there’s a theory that people avoided using "IV" as to not “disrespect” the god’s name. 🤷‍♀️

Also, on a 12 hour clock, 3 sets of four looks clean af I guess, e.g.:

  • I, II, III, IIII
  • V, VI, VII, VIII
  • IX, X, XI, XII
[-] Merva@sh.itjust.works 9 points 6 months ago* (last edited 6 months ago)

Since the IIII usage is common in the Middle Ages and even into the Early Modern Period, when nobody believed in Jupiter, that is obviously just something somebody made up.

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[-] lobut@lemmy.ca 54 points 6 months ago

I only recently learned the etymology of the word: "second"

Its name comes from being the "second" division of the hour, with the minute being the first.

[-] x00z@lemmy.world 22 points 6 months ago* (last edited 6 months ago)

I'll see you in 5 firsts, 2 seconds and 7 thirds.

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[-] ExtantHuman@lemm.ee 8 points 6 months ago* (last edited 6 months ago)

I honestly hate this.

It's like bad world building for some throwaway fiction story.

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[-] WhatsTheHoldup@lemmy.ml 31 points 6 months ago

Don't listen to OP's bullshit.

They work for big clock. They're trying to convince you 12 hour clock is useless so they can sell you double the clock.

[-] Frozengyro@lemmy.world 8 points 6 months ago

Look at this guy, only one clock. I keep two analog clocks in each room, the AM 12-11, and PM 12-11. The way it was meant to be.

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[-] MilitantAtheist@lemmy.world 29 points 6 months ago

Clocks should use 24h format. AM/PM is completely useless.

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[-] Lucien@mander.xyz 25 points 6 months ago

We have Babylon to thank for this

[-] massive_bereavement@fedia.io 29 points 6 months ago

Well, then I can't complain, lovely sci-fi production.

[-] KingJalopy@lemm.ee 13 points 6 months ago

Yeah but no matter how hard I look I can't find the first 4

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[-] UnderpantsWeevil@lemmy.world 10 points 6 months ago* (last edited 6 months ago)

Our mistake was not embracing base-12 time, it was failing to embrace a base-12 counting system.

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[-] ch00f@lemmy.world 24 points 6 months ago

Sundials.

Now if you want to get really pissed, the magnetic North Pole is actually the South Pole of the Earth’s magnetic field. We call it the North Pole because the north side of a magnet points to it.

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[-] ssfckdt 24 points 6 months ago

Somebody never had a clock with roman numerals and it shows

I remember getting into an argument with a grade school teacher over IIII because most such clocks put that for 4 instead of IV because of some fuckin reason

[-] Opisek@lemmy.world 16 points 6 months ago* (last edited 6 months ago)

I despise these so so much. IIII was historically NEVER correct. Some doofus decided to put that on a clock because it looks more symmetrical with the VIII on the other side. Terrible reasoning.

[-] mhague@lemmy.world 8 points 6 months ago

IIII was the way Romans usually wrote 4. It's associated with simplicity / illiteracy. But also depended on era, region, intended audience, or practicality. I think the most famous example is the coliseum using LIIII.

There's still variation even now; standardization is relatively new, and it's not common knowledge. And dates... it's like every 50-100 years people decided to write them differently.

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[-] naticus@lemmy.world 8 points 6 months ago

Weird, I've seen many analog clocks with Roman numerals but always IV for 4.

[-] topherclay@lemmy.world 18 points 6 months ago

It's actually called the "clockmakers four" or "watchmakers four." it's a thing.

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[-] StThicket@reddthat.com 20 points 6 months ago

When I become dictator of the world, this will be the new time unit: https://metric-time.com/

The year will also have 13 months: https://en.m.wikipedia.org/wiki/International_Fixed_Calendar

The year will be 12025: https://en.m.wikipedia.org/wiki/Holocene_calendar

Because these things just make more sense. You will thank me after a few generations, because habits are hard to change.

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[-] LanguageIsCool@lemmy.world 19 points 6 months ago

The 6 means 30, both of which also mean 1/2

[-] Shawdow194@fedia.io 16 points 6 months ago

Also why clockwise?

Earth rotates and orbits counter clockwise. It just seems more right

[-] Skua@kbin.earth 79 points 6 months ago

To be fair whichever direction they made it go would be clockwise

[-] Devadander@lemmy.world 20 points 6 months ago

True, but also it’s because of sundials

[-] mittyta@lemmy.world 69 points 6 months ago

Because Sundials rotate clockwise ( in north hemisphere )

[-] bdonvr@thelemmy.club 10 points 6 months ago* (last edited 6 months ago)

Earth rotates and orbits counter clockwise.

No it doesn't. It depends on the human perception of "up" and "down" which are completely arbitrary. We by convention see the North Pole as the "top" of the world but it could as easily be seen as Antarctica.

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[-] ryedaft@sh.itjust.works 12 points 6 months ago

If you want to be mad about time then I'd like to introduce you to a little thing I like to call the Gregorian calendar.

[-] mutual_ayed@sh.itjust.works 10 points 6 months ago

sub.wetshaving.social?

What is this?

[-] partial_accumen@lemmy.world 16 points 6 months ago

My guess is there are only so many conversations you can have over whether a Silvertip Badger is superior to a Boar brush.

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[-] Nougat@fedia.io 8 points 6 months ago

I'll be there at H:00.

[-] PieMePlenty@lemmy.world 8 points 6 months ago* (last edited 6 months ago)

Hour hand -> hour = n
Minute hand -> minute = n * 5
It makes sense, there's just an algorithm attached to each pointer.

Hour -> 3 = 3
Minute -> 3 = 3 * 5 = 15

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[-] ParadoxSeahorse@lemmy.world 8 points 6 months ago

Well it’s because noon means nine because the day starts at six o’ clock, so three is noon, but we use it to mean twelve which is closer to midday, obviously

[-] jol@discuss.tchncs.de 7 points 6 months ago* (last edited 6 months ago)

In Ethiopia they still use the tradition time where the day starts at the 1:00 which is our 6am. Then 12:00 is our 6PM, and it starts over. So they have 2 cycles of 12 hours, one for daytime, and one for night time. And it felt somewhat more intuitively in conversation too.

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[-] saltnotsugar@lemm.ee 6 points 6 months ago

I say we divide the day into 100 sections. No reason really I just think it’d be cool to party until 100 o’clock.

[-] dxdydz@slrpnk.net 7 points 6 months ago

You might like reading about decimal time…

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this post was submitted on 20 May 2025
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