As far as I have been able to determine, we got the 24-hour day from the ancient Egyptian and Babylonian astronomers, who divided the https://www.hosxx.co.uk/ daylight period into 10 hours, plus one hour for twilight and one for dawn. This was based on the apparent https://www.replicauhrenx.de/produkt-Sammlungen/richard-mille/ motion of the Sun in the sky, and eventually, these https://www.watchesx.org.uk/Collection/bvlgari/ long-gone stargazers settled on a group of stars which could be used to divide the night into hours as well.