2. RELATIVE TIME; Time with reference to an effect or purpose
[Nouns] timeliness, occasion, opportunity, opening, room; event (eventuality) [more]; suitable season, proper season, suitable time, proper time; high time; opportuneness; tempestivity.
crisis, turn, juncture, conjuncture; crisis, turning point, given time.
nick of time; golden opportunity, well timed opportunity, fine opportunity, favorable opportunity, opening; clear stage, open field, window of opportunity, fair field; mollia tempora; fata Morgana; spare time (leisure) [more].
suit the occasion (be expedient) [more].
seize the occasion, strike while the iron is hot, battre le fer sur l'enclume, make hay while the sun shines, seize the present hour, take time by the forelock, prendre la balle au bond.
providential, lucky, fortunate, happy, favorable, propitious, auspicious, critical; suitable [more]; obiter dicta.
[Adverbs] opportunely; in proper course, in due course, in proper season, in due season, in proper time, in due time; for the nonce; in the nick of time, in the fullness of time; all in good time; just in time, at the eleventh hour, now or never.
by the way, by the by; en passant, a propos; pro re nata, pro hac vice; par parenthese, parenthetically, by way of parenthesis, incidentally; while speaking of, while on the subject; extempore; on the spur of the moment, on the spur of the occasion; on the spot (early) [more].
[Phrases] carpe diem, [Horace. "Seize the day" (Latin)]; occasionem cognosce ["Recognize the opportunity" (Latin)]; one's hour is come, the time is up; that reminds me, now that you mention it, come to think of it; bien perdu bien connu ["We only know what we have when we have lost it" (French)]; � sempre l'ora ["It is always the time" (Italian)]; ex quovis ligno non fit Mercurius; nosce tempus ["Know the right time" (Latin)]; nunc aut nunquam ["Now or never" (Latin)].