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

(731) And when it is said to them: "Come, so that the Messenger of Allah may ask forgiveness from Allah for you," they twist their heads, and you would see them turning away their faces in pride.

(732) And Allah grants respite to none when his appointed time (death) comes. And Allah is All-Aware of what you do.

(733) (And remember) the Day when He will gather you (all) on the Day of Gathering, - that will be the Day of mutual loss and gain (i.e. loss for the disbelievers as they will enter the Hell-fire and gain for the believers as they will enter Paradise). And whosoever believes in Allah and performs righteous good deeds, He will expiate from him his sins, and will admit him to Gardens under which rivers flow (Paradise) to dwell therein forever; that will be the great success.

(734) O Prophet (صلى الله عليه وسلم)! when you divorce women, divorce them at their 'Iddah (prescribed periods) and count (accurately) their 'Iddah (periods ). And fear Allah your Lord (O Muslims). And turn them not out of their (husband's) homes nor shall they (themselves) leave, except in case they are guilty of some open illegal sexual intercourse. And those are the set limits of Allah. And whosoever transgresses the set limits of Allah, then indeed he has wronged himself. You (the one who divorces his wife) know not it may be that Allah will afterward bring some new thing to pass (i.e. to return her back to you if that was the first or second divorce).

(735) Then when they are about to attain their term appointed, either take them back in a good manner or part with them in a good manner. And take as witness two just persons from among you (Muslims). And establish the testimony for Allah. That will be an admonition given to him who believes in Allah and the Last Day. And whosoever fears Allah and keeps his duty to Him, He will make a way for him to get out (from every difficulty).

(736) And (remember) when the Prophet (صلى الله عليه وسلم) disclosed a matter in confidence to one of his wives (Hafsah), then she told it (to another i.e. 'Aishah). And Allah made it known to him; he informed part thereof and left a part. Then when he told her (Hafsah) thereof, she said: "Who told you this?" He said: "The All-Knower, the All-Aware (Allah) has told me."

(737) And Allah has set forth an example for those who believe: the wife of Fir'aun (Pharaoh), when she said: "My Lord! Build for me a home with You in Paradise, and save me from Fir'aun (Pharaoh) and his work, and save me from the people who are Zalimun (polytheists, wrong-doers and disbelievers in Allah).

(738) when they are cast therein, they will hear the (terrible) drawing in of its breath as it blazes forth.

(739) They say: "when will this promise (i.e. the Day of Resurrection) come to pass if you are telling the truth.?"

(740) But when they will see it (the torment on the Day of Resurrection) approaching, the faces of those who disbelieve will change and turn black with sadness and in grief and it will be said (to them): "This is (the promise) which you were calling for!"