in the middle of the night
Le oyó llorar en mitad de la noche.
He heard her crying in the middle of the night.
In the middle of the night.
It's the middle of the night.
Joder, ¿quién es el idiota que se atreve a llamarme en mitad de la noche?
Damn, who's the idiot who dares to call me in the middle of the night?
No contestó a la puerta en mitad de la noche, como hacen algunos.
He didn't answer the door in the middle of the night, like some people do.
— Psicosis (1960)