When you are racing against the clock—like a doctoral student preparing for their final defense—you need to set clear deadlines. To say "by" a certain time or "between now and" a future event, French uses d'ici and d'ici à.
Setting Deadlines with "d'ici"
Use d'ici directly before simple time words (like demain or ce soir) to indicate that an action will be completed by that time.
| The doctoral student will be ready by tonight. | Le doctorant sera prêt d'ici ce soir. |
| I will finish my thesis by tomorrow morning. | Je finirai ma thèse d'ici demain matin. |
Deadlines Before Events with "d'ici à"
When the deadline is a date, a day of the week, or a noun phrase (like an event), add à to make d'ici à. This emphasizes the span of time between right now and the deadline.
| Between now and the defense, he will be very busy. | D'ici à la soutenance, il sera très occupé. |
| By Monday, the committee will have the document. | D'ici à lundi, le comité aura le document. |
Before a noun phrase, the à is optional, so you can also use d'ici on its own.
| I must finish my doctorate by the defense. | Je dois finir mon doctorat d'ici la soutenance. |
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