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

(481) O mankind! if ye are in doubt concerning the Resurrection, then lo! We have created you from dust, then from a drop of seed, then from a clot, then from a little lump of flesh shapely and shapeless, that We may make (it) clear for you. And We cause what We will to remain in the wombs for an appointed time, and afterward We bring you forth as infants, then (give you growth) that ye attain your full strength. And among you there is he who dieth (young), and among you there is he who is brought back to the most abject time of life, so that, after knowledge, he knoweth naught. And thou (Muhammad) seest the earth barren, but when We send down water thereon, it doth thrill and swell and put forth every lovely kind (of growth).

(482) whenever, in their anguish, they would go forth from thence they are driven back therein and (it is said unto them): Taste the doom of burning.

(483) And (remember) when We prepared for Abraham the place of the (holy) House, saying: Ascribe thou no thing as partner unto Me, and purify My House for those who make the round (thereof) and those who stand and those who bow and make prostration.

(484) Whose hearts fear when Allah is mentioned, and the patient of whatever may befall them, and those who establish worship and who spend of that We have bestowed on them.

(485) And the camels! We have appointed them among the ceremonies of Allah. Therein ye have much good. So mention the name of Allah over them when they are drawn up in lines. Then when their flanks fall (dead), eat thereof and feed the beggar and the suppliant. Thus have We made them subject unto you, that haply ye may give thanks.

(486) Never sent We a messenger or a prophet before thee but when He recited (the message) Satan proposed (opposition) in respect of that which he recited thereof. But Allah abolisheth that which Satan proposeth. Then Allah establisheth His revelations. Allah is Knower, Wise;

(487) And when Our revelations are recited unto them, thou knowest the denial in the faces of those who disbelieve; they all but attack those who recite Our revelations unto them. Say: Shall I proclaim unto you worse than that? The Fire! Allah hath promised it for those who disbelieve. A hapless journey's end!

(488) Then We inspired in him, saying: Make the ship under Our eyes and Our inspiration. Then, when Our command cometh and the oven gusheth water, introduce therein of every (kind) two spouses, and thy household save him thereof against whom the Word hath already gone forth. And plead not with Me on behalf of those who have done wrong. Lo! they will be drowned.

(489) And when thou art on board the ship, thou and whoso is with thee, then say: Praise be to Allah Who hath saved us from the wrongdoing folk!

(490) Doth he promise you that you, when ye are dead and have become dust and bones, will (again) be brought forth?