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

(451) And when they are called to Allah (i.e. His Words, the Qur'an) and His Messenger (صلى الله عليه وسلم), to judge between them, lo! a party of them refuses (to come) and turns away.

(452) The only saying of the faithful believers, when they are called to Allah (His Words, the Qur'an) and His Messenger (صلى الله عليه وسلم), to judge between them, is that they say: "We hear and we obey." And such are the successful (who will live forever in Paradise).

(453) And when the children among you come to puberty, then let them (also) ask for permission, as those senior to them (in age). Thus Allah makes clear His Ayat (Commandments and legal obligations) for you. And Allah is All-Knowing, All-Wise.

(454) There is no restriction on the blind, nor any restriction on the lame, nor any restriction on the sick, nor on yourselves, if you eat from your houses, or the houses of your fathers, or the houses of your mothers, or the houses of your brothers, or the houses of your sisters, or the houses of your father's brothers, or the houses of your father's sisters, or the houses of your mother's brothers, or the houses of your mother's sisters, or (from that) whereof you hold keys, or (from the house) of a friend. No sin on you whether you eat together or apart. But when you enter the houses, greet one another with a greeting from Allah (i.e. say: السلام عليكم) As-Salamu 'Alaikum - peace be on you) blessed and good. Thus Allah makes clear the Ayat (these Verses or your religious symbols and signs) to you that you may understand.

(455) The true believers are only those, who believe in (the Oneness of) Allah and His Messenger (Muhammad صلى الله عليه وسلم): and when they are with him on some common matter, they go not away until they have asked his permission. Verily those who ask your permission, those are they who (really) believe in Allah and His Messenger. So if they ask your permission for some affairs of theirs, give permission to whom you will of them, and ask Allah for their forgiveness. Truly, Allah is Oft-Forgiving, Most Merciful.

(456) Certainly, to Allah belongs all that is in the heavens and the earth. Surely, He knows your condition and (He knows) the Day when they will be brought back to Him, then He will inform them of what they did. And Allah is All-Knower of everything.

(457) when it (Hell) sees them from a far place, they will hear its raging and its roaring.

(458) And when they shall be thrown into a narrow place thereof, chained together, they will exclaim therein for destruction.

(459) And on the Day when He will gather them together and that which they worship besides Allah [idols, angels, pious men, saints] . He will say: "Was it you who misled these My slaves or did they (themselves) stray from the (Right) Path?"

(460) And (remember) the Day when the heaven shall be rent asunder with clouds, and the angels will be sent down, with a grand descending.