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

(391) So they went on until when they came to the people of a town, they asked them for food, but they refused to entertain them as guests. Then they found in it a wall which was on the point of falling, so he put it into a right state. (Musa) said: If you had pleased, you might certainly have taken a recompense for it.

(392) Until when he reached the place where the sun set, he found it going down into a black sea, and found by it a people. We said: O Zulqarnain! either give them a chastisement or do them a benefit.

(393) Until when he reached the land of the rising of the sun, he found it rising on a people to whom We had given no shelter from It;

(394) Until when he reached (a place) between the two mountains, he found on that side of them a people who could hardly understand a word.

(395) Bring me blocks of iron; until when he had filled up the space between the two mountain sides, he said: Blow, until when he had made it (as) fire, he said: Bring me molten brass which I may pour over it.

(396) He said: This is a mercy from my Lord, but when the promise of my Lord comes to pass He will make it level with the ground, and the promise of my Lord is ever true.

(397) when he called upon his Lord in a low voice,

(398) He said: O my Lord! when shall I have a son, and my wife is barren, and I myself have reached indeed the extreme degree of old age?

(399) He said: So shall it be, your Lord says: It is easy to Me, and indeed I created you before, when you were nothing.

(400) And mention Marium in the Book when she drew aside from her family to an eastern place;