The word(s) "day" appears 704 time(s) in 579 verse(s) in Quran in Mohsin Khan translation.

(271) The sovereignty on that day will be the true (sovereignty), belonging to the Most Gracious (Allah), and it will be a hard day for the disbelievers (those who disbelieve in the Oneness of Allah - Islamic Monotheism).

(272) And (remember) the day when the Zalim (wrong-doer, oppressor, polytheist) will bite at his hands, he will say: "Oh! Would that I had taken a path with the Messenger (Muhammad صلى الله عليه وسلم).

(273) And it is He Who makes the night a covering for you, and the sleep (as) a repose, and makes the day Nushur (i.e. getting up and going about here and there for daily work, after one's sleep at night, or like resurrection after one's death).

(274) Who created the heavens and the earth and all that is between them in six days. Then He (Istawa ) rose over the Throne (in a manner that suits His Majesty). The Most Gracious (Allah)! Ask Him (O Prophet Muhammad صلى الله عليه وسلم , concerning His Qualities: His rising over His Throne, His creations, etc.), as He is Al-Khabir (The All-Knower of everything i.e. Allah).

(275) And He it is Who has put the night and the day in succession, for such who desires to remember or desires to show his gratitude.

(276) The torment will be doubled to him on the day of Resurrection, and he will abide therein in disgrace;

(277) So the sorcerers were assembled at a fixed time on a day appointed.

(278) "And Who, I hope, will forgive me my faults on the day of Recompense, (the day of Resurrection).

(279) And disgrace me not on the day when (all the creatures) will be resurrected.

(280) The day whereon neither wealth nor sons will avail,