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

(561) And (remember) when you said to him (Zaid bin Harithah رضي الله عنه - the freed-slave of the Prophet صلى الله عليه وسلم) on whom Allah has bestowed Grace (by guiding him to Islam) and you (O Muhammad صلى الله عليه وسلم too) have done favour (by manumitting him): "Keep your wife to yourself, and fear Allah." But you did hide in yourself (i.e. what Allah has already made known to you that He will give her to you in marriage) that which Allah will make manifest, you did fear the people (i.e., their saying that Muhammad صلى الله عليه وسلم married the divorced wife of his manumitted slave) whereas Allah had a better right that you should fear Him. So when Zaid had accomplished his desire from her (i.e. divorced her), We gave her to you in marriage, so that (in future) there may be no difficulty to the believers in respect of (the marriage of) the wives of their adopted sons when the latter have no desire to keep them (i.e. they have divorced them). And Allah's Command must be fulfilled.

(562) O you who believe! when you marry believing women, and then divorce them before you have sexual intercourse with them, no 'Iddah [divorce prescribed period, see (V.65:4)] have you to count in respect of them. So give them a present, and set them free (i.e. divorce), in a handsome manner.

(563) O you who believe! Enter not the Prophet's houses, unless permission is given to you for a meal, (and then) not (so early as) to wait for its preparation. But when you are invited, enter, and when you have taken your meal, disperse without sitting for a talk. Verily, such (behaviour) annoys the Prophet, and he is shy of (asking) you (to go); but Allah is not shy of (telling you) the truth. And when you ask (his wives) for anything you want, ask them from behind a screen: that is purer for your hearts and for their hearts. And it is not (right) for you that you should annoy Allah's Messenger, nor that you should ever marry his wives after him (his death). Verily, with Allah that shall be an enormity.

(564) On the Day when their faces will be turned over in the Fire, they will say: "Oh, would that we had obeyed Allah and obeyed the Messenger (Muhammad صلى الله عليه وسلم)."

(565) Those who disbelieve say: "Shall we direct you to a man (Muhammad صلى الله عليه وسلم) who will tell you (that) when you have become fully disintegrated into dust with full dispersion, then you will be created (again) anew?"

(566) Then when We decreed death for him [Sulaiman (Solomon)], nothing informed them (jinn) of his death except a little worm of the earth, which kept (slowly) gnawing away at his stick. So when he fell down, the jinn saw clearly that if they had known the Unseen, they would not have stayed in the humiliating torment.

(567) Intercession with Him profits not except for him whom He permits. So much so that when fear is banished from their (angels') hearts, they (angels) say: "What is it that your Lord has said?" They say: "The truth. And He is the Most High, the Most Great."

(568) And they say: "when is this promise (i.e. the Day of Resurrection) if you are truthful?"

(569) And those who disbelieve say: "We believe not in this Qur'an nor in that which was before it." But if you could see when the Zalimun (polytheists and wrong-doers) will be made to stand before their Lord, how they will cast the (blaming) word one to another! Those who were deemed weak will say to those who were arrogant: "Had it not been for you, we should certainly have been believers!"

(570) Those who were deemed weak will say to those who were arrogant: "Nay, but it was your plotting by night and day: when you ordered us to disbelieve in Allah and set up rivals to Him!" And each of them (parties) will conceal their own regrets (for disobeying Allah during this worldly life), when they behold the torment. And We shall put iron collars round the necks of those who disbelieved. Are they requited aught except what they used to do?