The word(s) "when" appears 1006 time(s) in 918 verse(s) in Quran in Muhammad Pickthal translation.

(601) And when harm toucheth men they cry unto their Lord, turning to Him in repentance; then, when they have tasted of His mercy, behold! some of them attribute partners to their Lord

(602) And when We cause mankind to taste of mercy they rejoice therein; but if an evil thing befall them as the consequence of their own deeds, lo! they are in despair!

(603) Allah is He Who sendeth the winds so that they raise clouds, and spreadeth them along the sky as pleaseth Him, and causeth them to break and thou seest the rain downpouring from within them. And when He maketh it to fall on whom He will of His bondmen, lo! they rejoice;

(604) For verily thou (Muhammad) canst not make the dead to hear, nor canst thou make the deaf to hear the call when they have turned to flee.

(605) And on the day when the Hour riseth the guilty will vow that they did tarry but an hour - thus were they ever deceived.

(606) And when Our revelations are recited unto him he turneth away in pride as if he heard them not, as if there were a deafness in his ears. So give him tidings of a painful doom.

(607) And (remember) when Luqman said unto his son, when he was exhorting him: O my dear son! Ascribe no partners unto Allah. Lo! to ascribe partners (unto Him) is a tremendous wrong -

(608) And if a wave enshroudeth them like awnings, they cry unto Allah, making their faith pure for Him only. But when He bringeth them safe to land, some of them compromise. None denieth Our signs save every traitor ingrate.

(609) O mankind! Keep your duty to your Lord and fear a Day when the parent will not be able to avail the child in aught, nor the child to avail the parent. Lo! Allah's promise is the very truth. Let not the life of the world beguile you, nor let the deceiver beguile you, in regard to Allah.

(610) And they say: when we are lost in the earth, how can we then be re-created? Nay but they are disbelievers in the meeting with their Lord.