я точно не знаю, когда

I don't know exactly when

→ я
phrase Rare #47,338
I don't know exactly when Introduces an indirect question about the time something happened or will happen. Точно means “exactly” or “for sure.”
RU: Я точно не знаю, когда начнётся фильм.
EN: I don't know exactly when the movie will start.

Я точно не знаю, когда он придёт.

I don't know exactly when he will come.

Я точно не знаю, когда приедет Том.

I don't know exactly when Tom will arrive.

Я точно не знаю, когда Том ушёл.

I don't know exactly when Tom left.

Я точно не знаю, когда он приедет.

I don't know exactly when he will arrive.