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

(591) And, when he (his son) was old enough to walk with him, he said: "O my son! I have seen in a dream that I am slaughtering you (offering you in sacrifice to Allah). So look what you think!" He said: "O my father! Do that which you are commanded, Insha' Allah (if Allah wills), you shall find me of As-Sabirun (the patient)."

(592) Then, when they had both submitted themselves (to the Will of Allah), and he had laid him prostrate on his forehead (or on the side of his forehead for slaughtering);

(593) when he said to his people: "Will you not fear Allah?

(594) when We saved him and his family, all,

(595) when he ran to the laden ship:

(596) Then, when it descends in their courtyard (i.e. near to them), evil will be the morning for those who had been warned!

(597) How many a generation have We destroyed before them! And they cried out when there was no longer time for escape.

(598) And has the news of the litigants reached you? when they climbed over the wall into (his) Mihrab (a praying place or a private room);

(599) when they entered in upon Dawud (David), he was terrified of them. They said: "Fear not! (We are) two litigants, one of whom has wronged the other, therefore judge between us with truth, and treat us not with injustice, and guide us to the Right Way.

(600) when there were displayed before him, in the afternoon, well trained horses of the highest breed [for Jihad (holy fighting in Allah's Cause)].