At least our hours are the same length regardless of latitude now, so let's be grateful for that.
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A collection of some classic Lemmy memes for your enjoyment
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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.
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.
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
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.
I honestly hate this.
It's like bad world building for some throwaway fiction story.
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.
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?
We have Babylon to thank for this
Our mistake was not embracing base-12 time, it was failing to embrace a base-12 counting system.
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
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.
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.
Weird, I've seen many analog clocks with Roman numerals but always IV for 4.
It's actually called the "clockmakers four" or "watchmakers four." it's a thing.
To be fair, Google searching Roman numerals clocks give you about a 50/50 distribution.
I wasn't aware of this either and I suspect we're not alone. It's not highly noticeable and if there's a 50-50 chance won't even see it...
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.
Don't tell them about positive/negative electron movement.
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.
These are called "superior highly composite numbers" apparently https://en.wikipedia.org/wiki/Superior_highly_composite_number
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.
Only really counts for feet and inches. But yes, having your base unit be divisible by halves, thirds, quarters, sixths, and twelths with whole numbers of sub units is highly useful when fabricating objects when you don't have access to modern tooling and supplies. In fact I would argue base 12 is the superior numerical system that was abandoned for metric and we have lost something in the meantime. Though Jan Misali might disagree with his love for sexinal.
Imperial units do have another advantage to this day, though. When talking about machining bolts and threads Imperial use threads per inch or threads per unit length while metric uses the pitch of the thread, so mm in-between threads. This decision means that when machining imperial nuts and bolts we by default pick whole numbers of threads per inch which due to the circular nature of lathes means that a simple clock dial can keep the lead screw synchronised with the head. Since metric uses pitch we pick numbers like 1.25mm pitch which does not always synchronous well with the lead screw and head and requires some odd gear ratios to cut specific threads.
The 6 means 30, both of which also mean 1/2
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.
Redefining the definition of a second sounds very problematic.
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.
sub.wetshaving.social?
What is this?
My guess is there are only so many conversations you can have over whether a Silvertip Badger is superior to a Boar brush.
But there's a million razorblades people can argue about. Platinum, tool steel, carbon. And then there's which holder is the best. And then all the straight razor refinishing/refirbishing you could get into. Not to mention, strops, towels, soaps, sebum oils, styptics and on and on.
You'd be surprised
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
Gift from ancient Mesopotamia. Mesopotamians love 12 & base 60. They also liked 7. Those numbers recur in their mythology.
Americans have a weird fixation with 💯. Where Americans might use percentages, I've seen Japanese plot values in [0, 1] (ie, pure proportions).
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
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.
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.
You might like reading about decimal time…