It's five o'clock.
Son las cinco.
It's eleven o'clock.
Son las once.
It's nine o'clock.
Son las nueve.
It's four o'clock.
Son las cuatro.
It's 1:15.
Es la una y cuarto.
It's 1:30.
Es la una y media.
It's seven o'clock.
Son las siete.
It's three o'clock.
Son las tres.
It's ten o'clock.
Son las diez.
It's six o'clock.
Son las seis.
It's eight o'clock.
Son las ocho.
It's twelve o'clock.
Son las doce.
It's two o'clock.
Son las dos.
It's one o'clock.
Es la una.
It's 12:30.
Son las doce y media.