French phrase
Quand peut-on utiliser ~ ?
Meaning
When can you use ___?
When to use it
It asks when something can be used. It is a polite way to ask about timing or conditions.
Example dialogue
Quand peut-on utiliser la carte étudiante ?
When can you use the student card?
En général dès l'inscription à l'université.
Generally, as soon as you enroll at the university.