The word(s) "when" appears 708 time(s) in 647 verse(s) in Quran in Abdullah Yusuf Ali translation.

(531) Allah's Good Pleasure was on the Believers when they swore Fealty to thee under the Tree: He knew what was in their hearts, and He sent down Tranquillity to them; and He rewarded them with a speedy Victory;

(532) "What! when we die and become dust, (shall we live again?) That is a (sort of) return far (from our understanding)."

(533) But they deny the Truth when it comes to them: so they are in a confused state.

(534) And listen for the Day when the Caller will call out from a place quiet near,-

(535) The Day when they will hear a (mighty) Blast in (very) truth: that will be the Day of Resurrection.

(536) The Day when the Earth will be rent asunder, from (men) hurrying out: that will be a gathering together,- quite easy for Us.

(537) They ask, "when will be the Day of Judgment and Justice?"

(538) (It will be) a Day when they will be tried (and tested) over the Fire!

(539) (when they did not eat), He conceived a fear of them. They said, "Fear not," and they gave him glad tidings of a son endowed with knowledge.

(540) On the Day when the firmament will be in dreadful commotion.