본 날

the day (someone) saw

→ 보다
phrase Rare #32,025
the day (someone) saw The subject and object are often omitted and understood from context; 보다 can mean “see,” “meet,” or “watch.”
KO: 우리가 처음 만난 사람을 본 날을 기억해요.
EN: I remember the day I first saw the person we met.

처음으로 같이 연극 본 날

The day we saw a play together for the first time

— No Other Choice (2025)

내 동생 마지막으로 본 날.

The last day I saw my younger sibling.

— 씨너스: 죄인들 (2025)