The word(s) "day" appears 569 time(s) in 514 verse(s) in Quran in Abdullah Yusuf Ali translation.

(131) The day it arrives, no soul shall speak except by His leave: of those (gathered) some will be wretched and some will be blessed.

(132) And establish regular prayers at the two ends of the day and at the approaches of the night: For those things, that are good remove those that are evil: Be that the word of remembrance to those who remember (their Lord):

(133) So they did take him away, and they all agreed to throw him down to the bottom of the well: and We put into his heart (this Message): 'Of a surety thou shalt (one day) tell them the truth of this their affair while they know (thee) not'

(134) So the king said: "Bring him unto me; I will take him specially to serve about my own person." Therefore when he had spoken to him, he said: "Be assured this day, thou art, before our own presence, with rank firmly established, and fidelity fully proved!

(135) He said: "This day let no reproach be (cast) on you: Allah will forgive you, and He is the Most Merciful of those who show mercy!

(136) And it is He who spread out the earth, and set thereon mountains standing firm and (flowing) rivers: and fruit of every kind He made in pairs, two and two: He draweth the night as a veil o'er the day. Behold, verily in these things there are signs for those who consider!

(137) It is the same (to Him) whether any of you conceal his speech or declare it openly; whether he lie hid by night or walk forth freely by day.

(138) We sent Moses with Our signs (and the command). "Bring out thy people from the depths of darkness into light, and teach them to remember the days of Allah." Verily in this there are Signs for such as are firmly patient and constant,- grateful and appreciative.

(139) The parable of those who reject their Lord is that their works are as ashes, on which the wind blows furiously on a tempestuous day: No power have they over aught that they have earned: that is the straying far, far (from the goal).

(140) Speak to my servants who have believed, that they may establish regular prayers, and spend (in charity) out of the sustenance we have given them, secretly and openly, before the coming of a day in which there will be neither mutual bargaining nor befriending.