this post was submitted on 20 May 2025
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[–] [email protected] 59 points 20 hours ago (7 children)
[–] [email protected] 46 points 20 hours ago (2 children)
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[–] [email protected] 21 points 19 hours ago (7 children)

Why the 'IIII' insted of 'IV'?

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[–] [email protected] 24 points 17 hours ago (2 children)

Somebody gave me this clock…I just need the time.

[–] [email protected] 7 points 14 hours ago
[–] [email protected] 2 points 10 hours ago

piece of art

[–] [email protected] 22 points 17 hours ago (17 children)

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

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[–] [email protected] 76 points 22 hours ago (1 children)

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.

[–] [email protected] 46 points 21 hours ago* (last edited 21 hours ago) (1 children)

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.

[–] [email protected] 8 points 20 hours ago* (last edited 20 hours ago) (1 children)

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

[–] [email protected] 2 points 12 hours ago (1 children)

I'ma start a revolution where we use duodecimal metric for everything, including time.

[–] [email protected] 1 points 11 hours ago (3 children)

That's how we ended up with 12 months of varying length in a year and it's a mess.

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[–] [email protected] 30 points 21 hours ago (2 children)

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.

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[–] [email protected] 89 points 1 day ago

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

[–] [email protected] 17 points 20 hours ago (6 children)

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.

[–] [email protected] 3 points 14 hours ago

Seems a bit odd to not use a base 10 number of months.

[–] [email protected] 2 points 13 hours ago

I'd love to have a 13-month calendar.

[–] [email protected] 5 points 16 hours ago

Redefining the definition of a second sounds very problematic.

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[–] [email protected] 52 points 1 day ago (3 children)

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.

[–] [email protected] 22 points 23 hours ago* (last edited 23 hours ago) (1 children)

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

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[–] [email protected] 7 points 18 hours ago* (last edited 18 hours ago)

I honestly hate this.

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

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[–] [email protected] 31 points 23 hours ago* (last edited 23 hours ago) (16 children)

Days start at 0h, not 12h

It can't start at 12 hours if there are 24 segments.

And keep your letters out of it too.

[–] [email protected] 23 points 23 hours ago (4 children)

Days start at 0h, not 12h

Show me where is the zero here?

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[–] [email protected] 24 points 1 day ago (3 children)

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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[–] [email protected] 27 points 1 day ago (5 children)

We have Babylon to thank for this

[–] [email protected] 31 points 1 day ago (10 children)

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

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[–] [email protected] 13 points 22 hours 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.

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