a estas horas

at this hour

→ a
phrase Rare #42,706
at this hour Can also mean “by this time” when referring to a future point; often implies that it is late or an unusual time.
PO: Não devias estar na rua a estas horas.
EN: You shouldn’t be out at this hour.

Onde vou encontrar leite a estas horas?

Where am I going to find milk at this hour?

— A Doce Vida (1960)

Aonde é que o senhor vai a estas horas?

Where are you going at this hour, sir?

— O Pátio das Cantigas (1942)

A Mary não ia sair sozinha a estas horas.

Mary wasn't going out alone at this hour.

Amanhã a estas horas já teremos chegado.

We will have arrived by this time tomorrow.