You most likely meant to ask: "What does son las cuatro menos cuarto mean?" which would translate to "It is 3:45." What you actually asked would translate to "It is a quarter minus a quarter."
It's twenty five minutes to four
its 2 minutes til 4
Translation: Son las cuatro menos veinte de la tarde.
Son las cuatro menos veinte de la tarde.
It is a quarter till three Be careful! If it's "menos cuarto", it's a quarter of. If it's "menos cuatro" (the r and t are reversed) it's only 4 minutes before the hour.
You would say "...y cuarto". "Las seis y cuarto" is "quarter after six"
"Son las cinco y media." You could say, "Son las cinco y treinta" or "Son las seis menos treinta" but it is more common to use media to refer to the middle of the hour.
Son las cuatro en punto means It is exactly four. So, son las cuatro en punto means it's four.
It is a quarter until four.
Son las dos menos cuarto means 1:45
menos cinco = minus five ex: nueve menos cinco son cuatro = nine minus five is four