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

(171) He it is Who created the heavens and the earth in truth. In the day when He saith: Be! it is. His Word is the Truth, and His will be the Sovereignty on the day when the trumpet is blown. Knower of the Invisible and the Visible, He is the Wise, the Aware.

(172) (Remember) when Abraham said unto his father Azar: Takest thou idols for gods? Lo! I see thee and thy folk in error manifest.

(173) when the night grew dark upon him he beheld a star. He said: This is my Lord. But when it set, he said: I love not things that set.

(174) And when he saw the moon uprising, he exclaimed: This is my Lord. But when it set, he said: Unless my Lord guide me, I surely shall become one of the folk who are astray.

(175) And when he saw the sun uprising, he cried: This is my Lord! This is greater! And when it set he exclaimed: O my people! Lo! I am free from all that ye associate (with Him).

(176) His people argued with him. He said: Dispute ye with me concerning Allah when He hath guided me? I fear not at all that which ye set up beside Him unless my Lord willeth aught. My Lord includeth all things in His knowledge. Will ye not then remember?

(177) How should I fear that which ye set up beside Him, when ye fear not to set up beside Allah that for which He hath revealed unto you no warrant? Which of the two factions hath more right to safety? (Answer me that) if ye have knowledge.

(178) And they measure not the power of Allah its true measure when they say: Allah hath naught revealed unto a human being. Say (unto the Jews who speak thus): Who revealed the Book which Moses brought, a light and guidance for mankind, which ye have put on parchments which ye show, but ye hide much (thereof), and (by which) ye were taught that which ye knew not yourselves nor (did) your fathers (know it)? Say: Allah. Then leave them to their play of cavilling.

(179) Who is guilty of more wrong than he who forgeth a lie against Allah, or saith: I am inspired, when he is not inspired in aught; and who saith: I will reveal the like of that which Allah hath revealed? If thou couldst see, when the wrong-doers reach the pangs of death and the angels stretch their hands out (saying): Deliver up your souls. This day ye are awarded doom of degradation for that ye spake concerning Allah other than the truth, and used to scorn His portents.

(180) He it is Who sendeth down water from the sky, and therewith We bring forth buds of every kind; We bring forth the green blade from which We bring forth the thick-clustered grain; and from the date-palm, from the pollen thereof, spring pendant bunches; and (We bring forth) gardens of grapes, and the olive and the pomegranate, alike and unlike. Look upon the fruit thereof, when they bear fruit, and upon its ripening. Lo! herein verily are portents for a people who believe.