They also complicate things.
It made more sense back before we had electric lighting and when everyone lived by the rising and setting of the sun. Now it doesn’t seem to really matter.
Obviously, the whole world deciding where to start the time would be nigh impossible but it could be like: starting at this date, on the first day of the year, what ever point is farthest away from the sun is 00:00 from henceforth.
And then people just adapted to what that meant for their particular area. Somebody’s morning might be 13:00!
Imagine if the whole world was on some global time schedule.





