A la hora en punto – on the dot (time)
A primera hora – first thing in the morning
A última hora – at the last minute
Dejar las cosas hasta útima hora – leave things to the last minute
Era hora – it was about time (you did something, etc.)
Es hora de + verb – It’s time to…. For example, es hora de ir.. it is time to go
En las altas horas de la noche – late at night
En buena hora – fortunately
Hora de comer – mealtime
Horas extras or horas extraordinarias – overtime (work)
Horas libres – free time
Horas de oficina – office or business hours
Horas pico – rush hours
Poner el reloj en la hora – to set a clock
Trabajo por horas – to be paid by the hour

Tico Expressions:
Hora tica – “Tico time” which refers to arriving late
Vivir horas extras – to live on borrowed time