The word(s) "when" appears 916 time(s) in 828 verse(s) in Quran in Mohsin Khan translation.

(611) And the earth will shine with the light of its Lord (Allah, when He will come to judge among men): and the Book will be placed (open); and the Prophets and the witnesses will be brought forward; and it will be judged between them with truth, and they will not be wronged.

(612) And those who disbelieved will be driven to Hell in groups till, when they reach it, the gates thereof will be opened (suddenly like a prison at the arrival of the prisoners). And its keepers will say, "Did not the Messengers come to you from yourselves, reciting to you the Verses of your Lord, and warning you of the Meeting of this Day of yours?" They will say: "Yes, but the Word of torment has been justified against the disbelievers!"

(613) And those who kept their duty to their Lord (Al-Muttaqun ) will be led to Paradise in groups, till, when they reach it, and its gates will be opened (before their arrival for their reception) and its keepers will say: Salamun 'Alaikum (peace be upon you)! You have done well, so enter here to abide therein."

(614) Those who disbelieve will be addressed (at the time of entering the Fire): "Allah's aversion was greater towards you (in the worldly life when you used to reject the Faith) than your aversion towards one another (now in the Fire of Hell, as you are now enemies to one another), when you were called to the Faith but you used to refuse."

(615) They will say: "Our Lord! You have made us to die twice (i.e. we were dead in the loins of our fathers and dead after our life in this world), and You have given us life twice (i.e. life when we were born and life when we are Resurrected)! Now we confess our sins, then is there any way to get out (of the Fire)?" (Tafsir Al-Qurtubi,)

(616) (It will be said): "This is because, when Allah Alone was invoked (in worship) you disbelieved (denied), but when partners were joined to Him, you believed! So the judgement is only with Allah, the Most High, the Most Great! "

(617) The Day when they will (all) come out, nothing of them will be hidden from Allah. Whose is the kingdom this Day? (Allah Himself will reply to His Question): It is Allah's the One, the Irresistible!

(618) And warn them (O Muhammad صلى الله عليه وسلم) of the Day that is drawing near (i.e. the Day of Resurrection), when the hearts will be choking the throats, and they can neither return them (hearts) to their chests nor can they throw them out. There will be no friend, nor an intercessor for the Zalimun (polytheists and wrong-doers), who could be given heed to.

(619) Then, when he brought them the Truth from Us, they said: "Kill the sons of those who believe with him and let their women live"; but the plots of disbelievers are nothing but in vain!

(620) "And, O my people! Verily, I fear for you the Day when there will be mutual calling (between the people of Hell and of Paradise)."