届时

at that time, by then

adverb Rare #27,787
at that time, by then Usually refers to a future time already mentioned or understood; somewhat formal.
CH: 届时我们会再联系你。
EN: We’ll contact you again then.

届时请辩方传第一证人出庭

At that time, please have the defense call its first witness to the stand.

— 好人寥寥 (1992)

届时,世界上所有的恐惧都会在他的眼中看到。

At that time, all the world’s fears will be reflected in his eyes.

— RRR:双雄起义 (2022)