24 hours cause Egyptians split their sun dials and star decans into 12 parts each (probably cause 12 is divisible by 2, 3, 4, and 6) which the greeks later turned into equal length hours (before the length would change over the year)
60 minutes due to Babylonian base-60 math
12 hour format is just tradition at this point, but derived from the sun dials which only worked at day, so half the time, and the star decans which only worked at night, so the other half.
pretty much every country except the US uses the 24h format on digitial clocks now
also the dude in the meme was kinda right: the day will be divided into 12 segments. and the night will too. at least originally
This all originated from the Ancient Sumerians btw. They passed it down to Babylonians.
Edit: A bit of history from what I learned from listening to Fall of Civilizations in the shower.
The Ancient Sumerians invented this sexagesimal system because if you look at your hand, you notice 12 knuckles (this is obviously excluding your thumb, as that is used for counting each knuckle), and with your other hand you will raise a single finger for every time you finish counting past 12 knuckles on your left hand. So raising your thumb is 12, thumb and index is 24, and so on, until you reach 60.
24 hours cause Egyptians split their sun dials and star decans into 12 parts each (probably cause 12 is divisible by 2, 3, 4, and 6) which the greeks later turned into equal length hours (before the length would change over the year)
60 minutes due to Babylonian base-60 math
12 hour format is just tradition at this point, but derived from the sun dials which only worked at day, so half the time, and the star decans which only worked at night, so the other half.
pretty much every country except the US uses the 24h format on digitial clocks now
also the dude in the meme was kinda right: the day will be divided into 12 segments. and the night will too. at least originally
This all originated from the Ancient Sumerians btw. They passed it down to Babylonians.
Edit: A bit of history from what I learned from listening to Fall of Civilizations in the shower.
The Ancient Sumerians invented this sexagesimal system because if you look at your hand, you notice 12 knuckles (this is obviously excluding your thumb, as that is used for counting each knuckle), and with your other hand you will raise a single finger for every time you finish counting past 12 knuckles on your left hand. So raising your thumb is 12, thumb and index is 24, and so on, until you reach 60.
It’s called a “highly composite number!” I read up on a lot of this stuff while learning about numerology and other esoteric spiritual traditions!