when is closing time?

Alternative form of when all is said and done

simple past tense of know someone when

(archaic) One should take immediate advantage of an opportunity that may not be available later.

(uncommon) Alternative form of when in Rome, do as the Romans do

(idiomatic, slang, informal, hyperbolic) Never; not in this lifetime or a time in the unforeseeably distant future; not a chance.

(idiomatic) in the end; ultimately

(figuratively, idiomatic) When the pressure is on; when the situation is critical or urgent; when the time has come for action, even if it is difficult.

(idiomatic) To make things worse for someone who is going through a difficult time.

(idiomatic) never