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

(461) And (remember) the Day when the Zalim (wrong-doer, oppressor, polytheist) will bite at his hands, he will say: "Oh! Would that I had taken a path with the Messenger (Muhammad صلى الله عليه وسلم).

(462) And Nuh's (Noah) people, when they denied the Messengers, We drowned them, and We made them as a sign for mankind. And We have prepared a painful torment for the Zalimun (polytheists and wrong-doers).

(463) And when they see you (O Muhammad صلى الله عليه وسلم), they treat you only in mockery (saying): "Is this the one whom Allah has sent as a Messenger?

(464) "He would have nearly misled us from our alihah (gods), had it not been that we were patient and constant in their worship!" And they will know when they see the torment, who it is that is most astray from the (Right) Path!

(465) And when it is said to them: "Prostrate yourselves to the Most Gracious (Allah)! they say: "And what is the Most Gracious? Shall we fall down in prostration to that which you (O Muhammad صلى الله عليه وسلم) command us?" And it increases in them only aversion.

(466) And the (faithful) slaves of the Most Gracious (Allah) are those who walk on the earth in humility and sedateness, and when the foolish address them (with bad words) they reply back with mild words of gentleness.

(467) And those who, when they spend, are neither extravagant nor niggardly, but hold a medium (way) between those (extremes).

(468) And those who, when they are reminded of the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of their Lord, fall not deaf and blind thereat.

(469) And (remember) when your Lord called Musa (Moses) (saying): "Go to the people who are Zalimun (polytheists and wrong-doers) -

(470) Musa (Moses) said: "I did it then, when I was ignorant (as regards my Lord and His Message).