this post was submitted on 20 May 2025
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[–] folekaule@lemmy.world 95 points 1 month ago (1 children)

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 85 points 1 month 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.

[–] WolfLink@sh.itjust.works 53 points 1 month ago* (last edited 1 month 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.

[–] echodot@feddit.uk 60 points 1 month ago (5 children)

If the day started at 1:00 then by the second hour you would be at 2:00, even though only 1 hour has passed. Effectively the day starts at 0. In fact in 24-hour time that is how it's depicted, 00:00 with midday being depicted as 12:00, so it isn't confusing

[–] Ricaz@lemmy.dbzer0.com 9 points 1 month ago (1 children)

Careful, there are Americans around

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[–] lobut@lemmy.ca 55 points 1 month 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.

[–] x00z@lemmy.world 23 points 1 month ago* (last edited 1 month ago) (1 children)

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

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[–] ExtantHuman@lemm.ee 8 points 1 month ago* (last edited 1 month ago)

I honestly hate this.

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

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[–] Honytawk@lemmy.zip 31 points 1 month ago* (last edited 1 month ago) (7 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.

[–] tauren@lemm.ee 22 points 1 month ago (4 children)

Days start at 0h, not 12h

Show me where is the zero here?

[–] mumblerfish@lemmy.world 11 points 1 month ago (7 children)

The AM/PM bullshit:

AM: 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Then the same for PM. Who counts like that? Whats after 12? 1! What?

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[–] Lucien@mander.xyz 26 points 1 month ago (5 children)

We have Babylon to thank for this

[–] massive_bereavement@fedia.io 31 points 1 month ago (1 children)

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

[–] KingJalopy@lemm.ee 13 points 1 month ago (9 children)

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

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[–] UnderpantsWeevil@lemmy.world 10 points 1 month ago* (last edited 1 month ago) (1 children)

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

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[–] ssfckdt@lemmy.blahaj.zone 25 points 1 month ago (3 children)

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 14 points 1 month ago* (last edited 1 month ago) (2 children)

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 7 points 1 month 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 9 points 1 month ago (4 children)

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

[–] topherclay@lemmy.world 20 points 1 month ago (1 children)

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

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[–] MilitantAtheist@lemmy.world 25 points 1 month ago (20 children)

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

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[–] ch00f@lemmy.world 23 points 1 month 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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[–] teslasaur@lemmy.world 18 points 1 month ago* (last edited 1 month ago) (2 children)

It's the same logic that was used by ancient astronomers to arrive at 360 degrees for a full revolution.

The math is easier if you have to do it by hand.

[–] nialv7@lemmy.world 11 points 1 month ago (2 children)
[–] Hobo@lemmy.world 7 points 1 month ago (5 children)

It's also the one advantage Imperial has over metric. It's easier to do mental math in a lot of cases in base 12 rather than base 10.

Now excuse me while I bar my windows and doors from the mobs of angry people that show every time I point this out.

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[–] Shawdow194@fedia.io 16 points 1 month ago (14 children)

Also why clockwise?

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

[–] Skua@kbin.earth 84 points 1 month ago (1 children)

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

[–] Devadander@lemmy.world 21 points 1 month ago

True, but also it’s because of sundials

[–] mittyta@lemmy.world 75 points 1 month ago

Because Sundials rotate clockwise ( in north hemisphere )

[–] Stovetop@lemmy.world 6 points 1 month ago (1 children)

Well, depending on which hemisphere you're standing in, at least. We arbitrarily set this idea that north = up in most depictions of the globe, but we could just as easily make Antarctica the top of the world and everything rotates the other way.

The reason why clockwise is what it is, is because sundials were first used to tell time in the northern hemisphere, where the shadows move clockwise. If it was in the southern hemisphere, they'd have moved counterclockwise (which would be clockwise).

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[–] LanguageIsCool@lemmy.world 16 points 1 month ago

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

[–] StThicket@reddthat.com 14 points 1 month ago (4 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.

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[–] ryedaft@sh.itjust.works 13 points 1 month 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.

[–] Nougat@fedia.io 10 points 1 month ago

I'll be there at H:00.

[–] PieMePlenty@lemmy.world 9 points 1 month ago* (last edited 1 month ago) (1 children)

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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[–] mutual_ayed@sh.itjust.works 9 points 1 month ago (1 children)

sub.wetshaving.social?

What is this?

[–] partial_accumen@lemmy.world 17 points 1 month ago (2 children)

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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[–] ParadoxSeahorse@lemmy.world 8 points 1 month 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

[–] FreedomAdvocate@lemmy.net.au 8 points 1 month ago (9 children)

Relatively funny but gets worse the more you think about it.

The 6 stands for 6, not 30.

When we have AM and PM it would be dumb to have 1-24.

1 is the end of the 1st hour. 2 the end of the second. This is why it starts at 0.

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