2 Answers

As far as I have been able to determine, we link got the 24-hour day from the ancient Egyptian and Babylonian astronomers, who divided the daylight period into 10 hours, plus one hour for twilight and one for dawn. This was based on the apparent motion of the Sun in the sky, and eventually, these long-gone stargazers settled on a group of stars which could be used to divide the night link into hours pre owned rolex oyster perpetual as well.

It's what the military actually uses. Plenty of watch companies make watches that theoretically could be link used for active duty but strip them down and link they're simply luxury products. There's nothing wrong with that either. No sensible government organization is going to blow thousands of dollars of taxpayer's money on luxury watches just for folks to abuse them in the field. That's why there's the link Marathon Navigator so they don't have to.