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

(341) Yet when He removes the evil from you, lo! a party of you associate others with their Lord;

(342) And when a daughter is announced to one of them his face becomes black and he is full of wrath.

(343) And if Allah had destroyed men for their iniquity, He would not leave on the earth a single creature, but He respites them till an appointed time; so when their doom will come they shall not be able to delay (it) an hour nor can they bring (it) on (before its time).

(344) And on the day when We will raise up a witness out of every nation, then shall no permission be given to those who disbelieve, nor shall they be made to solicit favor.

(345) And when those who are unjust shall see the chastisement, it shall not be lightened for them, nor shall they be respited.

(346) And when those who associate (others with Allah) shall see their associate-gods, they shall say: Our Lord, these are our associate-gods on whom we called besides Thee. But they will give them back the reply: Most surely you are liars.

(347) And on the day when We will raise up in every people a witness against them from among themselves, and bring you as a witness against these-- and We have revealed the Book to you explaining clearly everything, and a guidance and mercy and good news for those who submit.

(348) And fulfill the covenant of Allah when you have made a covenant, and do not break the oaths after making them fast, and you have indeed made Allah a surety for you; surely Allah knows what you do.

(349) So when you recite the Quran, seek refuge with Allah from the accursed Shaitan,

(350) And when We change (one) communication for (another) communication, and Allah knows best what He reveals, they say: You are only a forger. Nay, most of them do not know.