The reason is better is because a number on its own doesn’t provide any representation whatsoever of the passing of time. It represents the current observed time, but it does nothing to represent graphically how much of the day is left.
The arguably best representation of the passing of time is a 24h analogue watch/clock, even if that has its own set of issues which make it a terrible way of displaying the current time.
It goes beyond just showing what part of day you are in. Everything is reduced to angles. You don’t have to do any math with numbers, just look how much the pointer has to move to see how much time is left until an event you are interested in, and you get to visually compare that angle with the entire half of a day to get an even better perception of the passage of time.
