Here are two clocks.
One has normal numbers, the other has Roman Numerals.
They both show the same time.
The long blue hand is pointing to the 6 or VI, which is half way round, so the time will be something 30 or half past.
The short red hand is pointing to halfway between the 4 and the 5 or the IV and the V, so the time is:
Half past 4 or 4:30.