(for the) last time
Not in general restricted to the most recent time/occurrence; if the event might happen in the future, further specificity is desirable (using, say, "pu"). For example, if one is moving from their apartment tomorrow and will presumably close their door then, but one is wondering "did I lock my door the last time that I close(d) it?", then this word on its own would be inadequate; the question is asking about the most recent time that the door was closed by the wonderer (the last, id est most recent, occurrence /in the past/) but that will probably not be the last time that the wonderer /ever/ will have closed it (which would happen tomorrow). By default, time is ordered from past to future (past < future).