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

(571) And when he turned his face toward Midian, he said: Peradventure my Lord will guide me in the right road.

(572) And when he came unto the water of Midian he found there a whole tribe of men, watering. And he found apart from them two women keeping back (their flocks). He said: What aileth you? The two said: We cannot give (our flocks) to drink till the shepherds return from the water; and our father is a very old man.

(573) Then there came unto him one of the two women, walking shyly. She said: Lo! my father biddeth thee, that he may reward thee with a payment for that thou didst water (the flock) for us. Then, when he came unto him and told him the (whole) story, he said: Fear not! Thou hast escaped from the wrongdoing folk.

(574) Then, when Moses had fulfilled the term, and was travelling with his housefolk, he saw in the distance a fire and said unto his housefolk: Bide ye (here). Lo! I see in the distance a fire; peradventure I shall bring you tidings thence, or a brand from the fire that ye may warm yourselves.

(575) And when he reached it, he was called from the right side of the valley in the blessed field, from the tree: O Moses! Lo! I, even I, am Allah, the Lord of the Worlds;

(576) Throw down thy staff. And when he saw it writhing as it had been a demon, he turned to flee headlong, (and it was said unto him): O Moses! Draw nigh and fear not. Lo! thou art of those who are secure.

(577) But when Moses came unto them with Our clear tokens, they said: This is naught but invented magic. We never heard of this among our fathers of old.

(578) And thou (Muhammad) wast not on the western side (of the Mount) when We expounded unto Moses the commandment, and thou wast not among those present;

(579) And thou was not beside the Mount when We did call; but (the knowledge of it is) a mercy from thy Lord that thou mayst warn a folk unto whom no warner came before thee, that haply they may give heed.

(580) But when there came unto them the Truth from Our presence, they said: Why is he not given the like of what was given unto Moses? Did they not disbelieve in that which was given unto Moses of old? They say: Two magics that support each other; and they say: Lo! in both we are disbelievers.