A French Phrase for Asking when a deadline is: "Quand est la date limite du projet ?"

"Quand est la date limite du projet ?" means "When is the project deadline?" and it's the basic French expression used for asking when a deadline is. It's very handy at work and in the office. To answer, you can say something like "La date limite est jeudi prochain." (The deadline is next Thursday). You can keep the conversation going by reacting with something like "D'accord, je m'organise en conséquence." (Okay, I'll plan accordingly).