The word(s) "when" appears 926 time(s) in 834 verse(s) in Quran in Muhammad Habib Shakir translation.

(541) So when they ride in the ships they call upon Allah, being sincerely obedient to Him, but when He brings them safe to the land, lo! they associate others (with Him);

(542) And who is more unjust than one who forges a lie against Allah, or gives the lie to the truth when it has come to him? Will not in hell be the abode of the unbelievers?

(543) And at the time when the hour shall come the guilty shall be in despair.

(544) And at the time when the hour shall come, at that time they shall become separated one from the other.

(545) Therefore glory be to Allah when you enter upon the time of the evening and when you enter upon the time of the morning.

(546) And to Him belongs praise in the heavens and the earth, and at nightfall and when you are at midday.

(547) And one of His signs is that the heaven and the earth subsist by His command, then when He calls you with a (single) call from out of the earth, lo! you come forth.

(548) And when harm afflicts men, they call upon their Lord, turning to Him, then when He makes them taste of mercy from Him, lo! some of them begin to associate (others) with their Lord,

(549) And when We make people taste of mercy they rejoice in it, and if an evil befall them for what their hands have already wrought, lo! they are in despair.

(550) Allah is he Who sends forth the winds so they raise a cloud, then He spreads it forth in the sky as He pleases, and He breaks it up so that you see the rain coming forth from inside it; then when He causes it to fall upon whom He pleases of His servants, lo! they are joyful