Asking /telling the time in Espaol

Asking and telling the time:

    In Spanish, you use Son la___ and Es la una.
 Son las is plural and Es la una is singular and only for 1 o'clock.

To ask the time, you say "Que hora es?" To tell the the time, you can say either Son las ____ or Es la una, (Depending on what the time is.)