*Being evolution of sundials located on the northern hemisphere.

So you're saying clockwise can also be called sundialwise?

I was answering about the Northern/Southern hemisphere logic of this... and realised that it depends if the sundial is vertical in a wall (facing South in the Northern hemisphere) or horizontal (facing the zenith/sky)... today you can easily find those wall sundials in many monumental buildings (at least these seem to me more common than the others) and the shadow is casted counterclockwise in the Northern hemisphere, so not sure if the clockwise sense was locked by sundials... also in the Southern hemisphere logic flips completely.

Not all, but most

That’s a Babylonian thing. They were obsessed with highly divisible numbers like, 12, 24 and 60. Basically the opposite of prime numbers, which are super annoying to divide. Babylonians wanted their numbers to as nice as possible when dividing. For example, 60 is particularly nice since it’s not absurdly large, but when dividing it, you have lots of options.

All of this was long before the decimal point and calculators were invented, so divisibility was a big thing back then. Nowadays though, having weird fractions like that is more inconvenient and annoying than nice. Thanks to the Babylonians, we have super messy time units now.

Thanks to the Romans, we also have super messy units for length, weight, volume and money. Yes, even money had convoluted fractions. That’s not a huge deal though, since basically nobody uses those any more.

If that was the case, we would now be talking about 48 h clocks vs. 24 h clocks.

18:40 pm on the 24h clock would equal 36:40 on the 48 h clock. You would still not know whether it's night or day just looking at the time.

...and then they noticed: "Damn, we could have lit everything on fire and seen our clocks in the night time millenia ago!"

Your sundial still isn't showing time.

How are the illuminated clocks able to comprehend your presentation?