The word(s) "when" appears 708 time(s) in 647 verse(s) in Quran in Abdullah Yusuf Ali translation.

(501) In order that ye may sit firm and square on their backs, and when so seated, ye may celebrate the (kind) favour of your Lord, and say, "Glory to Him Who has subjected these to our (use), for we could never have accomplished this (by ourselves),

(502) when news is brought to one of them of (the birth of) what he sets up as a likeness to (Allah) Most Gracious, his face darkens, and he is filled with inward grief!

(503) Just in the same way, whenever We sent a Warner before thee to any people, the wealthy ones among them said: "We found our fathers following a certain religion, and we will certainly follow in their footsteps."

(504) But when the Truth came to them, they said: "This is sorcery, and we do reject it."

(505) At length, when (such a one) comes to Us, he says (to his evil companion): "Would that between me and thee were the distance of East and West!" Ah! evil is the companion (indeed)!

(506) when ye have done wrong, it will avail you nothing, that Day, that ye shall be partners in Punishment!

(507) But when he came to them with Our Signs, behold they ridiculed them.

(508) But when We removed the Penalty from them, behold, they broke their word.

(509) when at length they provoked Us, We exacted retribution from them, and We drowned them all.

(510) when (Jesus) the son of Mary is held up as an example, behold, thy people raise a clamour thereat (in ridicule)!