We take for granted that things are as they should be often without understanding why. Clock hands move “Clockwise” because they followed sundials. If human civilizations had developed primarily in the Southern Hemisphere, “clockwise” would be in the opposite direction.
Do you ever wonder why there are 60 seconds to a minute and 60 minutes to an hour? Blame the Babylonians. They loved the number 60 and used it as a base for their mathematics. There are many theories as to why the Babylonians liked 60, but the most plausible is that 60 is a useful number that can be divided by many others like 1,2,3,4,5, and 6 (and the Babylonians didn’t use fractions). That’s why there are also 6X60=360 degrees in a circle.
The single greatest development in time-keeping was the pendulum. Galileo was said to have thought of it on seeing the periodic motion of an incense bowl in the nave of a monastery. Though Huygens was the first to apply it to clocks.
Before train travel become common in the mid-1800s there was no concept of standardized time. Every town decided it’s own time based on the position of the sun, and kept an official clock.
In Bangla, we use “muhurta” quite differently from its original meaning, roughly corresponding to 48 minutes of standard time. We use it synonymously with “palak”, the time for the blink of an eyelid!