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

(291) Say: I have no power to hurt or benefit myself, save that which Allah willeth. For every nation there is an appointed time. when their time cometh, then they cannot put it off an hour, nor hasten (it).

(292) Say: Have ye thought: when His doom cometh unto you as a raid by night, or in the (busy) day; what is there of it that the guilty ones desire to hasten?

(293) Is it (only) then, when it hath befallen you, that ye will believe? What! (Believe) now, when (until now) ye have been hastening it on (through disbelief)?

(294) And if each soul that doeth wrong had all that is in the earth it would seek to ransom itself therewith; and they will feel remorse within them, when they see the doom. But it hath been judged between them fairly and they are not wronged.

(295) And thou (Muhammad) art not occupied with any business and thou recitest not a Lecture from this (Scripture), and ye (mankind) perform no act, but We are Witness of you when ye are engaged therein. And not an atom's weight in the earth or in the sky escapeth your Lord, nor what is less than that or greater than that, but it is (written) in a clear Book.

(296) Recite unto them the story of Noah, when he told his people: O my people! If my sojourn (here) and my reminding you by Allah's revelations are an offence unto you, in Allah have I put my trust, so decide upon your course of action you and your partners. Let not your course of action be in doubt for you. Then have at me, give me no respite.

(297) And when the Truth from Our presence came unto them, they said: Lo! this is mere magic.

(298) Moses said: Speak ye (so) of the Truth when it hath come unto you? Is this magic? Now magicians thrive not.

(299) And when the wizards came, Moses said unto them: Cast your cast!

(300) And when they had cast, Moses said: That which ye have brought is magic. Lo! Allah will make it vain. Lo! Allah upholdeth not the work of mischief-makers.