The word(s) "days" appears 39 time(s) in 35 verse(s) in Quran in Abdullah Yusuf Ali translation.

(31) Tell those who believe, to forgive those who do not look forward to the days of Allah: It is for Him to recompense (for good or ill) each People according to what they have earned.

(32) We created the heavens and the earth and all between them in Six days, nor did any sense of weariness touch Us.

(33) He it is Who created the heavens and the earth in Six days, and is moreover firmly established on the Throne (of Authority). He knows what enters within the earth and what comes forth out of it, what comes down from heaven and what mounts up to it. And He is with you wheresoever ye may be. And Allah sees well all that ye do.

(34) He made it rage against them seven nights and eight days in succession: so that thou couldst see the (whole) people lying prostrate in its (path), as they had been roots of hollow palm-trees tumbled down!

(35) "Eat ye and drink ye, with full satisfaction; because of the (good) that ye sent before you, in the days that are gone!"