before Friday
Va a ser difícil terminar todo antes del viernes.
It's going to be difficult to finish everything before Friday.
El boleto vale para dos personas si lo usas antes del viernes.
The ticket is valid for two people if you use it before Friday.
Si todo sale bien, terminamos antes del viernes.
If all goes well, we'll finish before Friday.
Tiene que ser antes del viernes sin excepción.
It has to be before Friday without exception.
El estudiante debe presentar la tarea antes del viernes sin falta.
The student must submit the assignment before Friday without fail.