There are various ways to say this. "Son las tres y cuarenta y cinco" de la tarde is one, equivalent to "it is three forty-five". Another is "Son las cuatro menos quince de la tarde", which would be ""fifteen till four" in English. One more way is "un quarto para las cuatro", or "a quarter to four".
630 PM
566
La una de la tarde.
4:29 pm in Spanish is: Son las cuatro veintinueve de la tarde.
4:45 pm on Wednesday
You would say "de la tarde" or "de la noche".
You say, "Son las dos de la tarde."
9 hours 45 minutes
Llega a las 2:30 (dos treinta) PM (pe eme)
Between 1:30pm and 4:45pm there are 195 minutes .
doce y doce de la tarde
Son las once de la noche.