The word(s) "day" appears 533 time(s) in 482 verse(s) in Quran in Muhammad Habib Shakir translation.

(131) He said: (There shall be) no reproof against you this day; Allah may forgive you, and He is the most Merciful of the merciful.

(132) And He it is Who spread the earth and made in it firm mountains and rivers, and of all fruits He has made in it two kinds; He makes the night cover the day; most surely there are signs in this for a people who reflect.

(133) Alike (to Him) among you is he who conceals (his) words and he who speaks them openly, and he who hides himself by night and (who) goes forth by day.

(134) And certainly We sent Musa with Our communications, saying: Bring forth your people from utter darkness into light and remind them of the days of Allah; most surely there are signs in this for every patient, grateful one.

(135) The parable of those who disbelieve in their Lord: their actions are like ashes on which the wind blows hard on a stormy day; they shall not have power over any thing out of what they have earned; this is the great error.

(136) Say to My servants who believe that they should keep up prayer and spend out of what We have given them secretly and openly before the coming of the day in which there shall be no bartering nor mutual befriending.

(137) And He has made subservient to you the sun and the moon pursuing their courses, and He has made subservient to you the night and the day.

(138) O our Lord! grant me protection and my parents and the believers on the day when the reckoning shall come to pass!

(139) And do not think Allah to be heedless of what the unjust do; He only respites them to a day on which the eyes shall be fixedly open,

(140) And warn people of the day when the chastisement shall come to them, then those who were unjust will say: O our Lord! respite us to a near term, (so) we shall respond to Thy call and follow the apostles. What! did you not swear before (that) there will be no passing away for you!