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

(191) (And remember) the day when We shall call together call human beings with their (respective) Imam [their Prophets, or their records of good and bad deeds, or their Holy Books like the Qur'an, the Taurat (Torah), the Injeel (Gospel), the leaders whom the people followed in this world.]. So whosoever is given his record in his right hand, such will read their records, and they will not be dealt with unjustly in the least.

(192) Perform As-Salat (Iqamat-as-Salat) from mid-day till the darkness of the night (i.e. the Zuhr, 'Asr, Maghrib and 'Isha' prayers), and recite the Qur'an in the early dawn (i.e. the morning prayer). Verily, the recitation of the Qur'an in the early dawn is ever witnessed (attended by the angels in charge of mankind of the day and the night) .

(193) And in some parts of the night (also) offer the Salat (prayer) with it (i.e. recite the Qur'an in the prayer), as an additional prayer (Tahajjud optional prayer - Nawafil) for you (O Muhammad صلى الله عليه و سلم). It may be that your Lord will raise you to Maqam Mahmud (a station of praise and glory, i.e. the honour of intercession on the day of Resurrection.) .

(194) And he whom Allah guides, he is led aright; but he whom He sends astray, for such you will find no Auliya' (helpers and protectors), besides Him, and We shall gather them together on the day of Resurrection on their faces, blind, dumb and deaf; their abode will be Hell; whenever it abates, We shall increase for them the fierceness of the Fire.

(195) And We said to the Children of Israel after him: "Dwell in the land, then, when the final and the last promise comes near [i.e. the day of Resurrection or the descent of Christ ['Îsa (Jesus), son of Maryam (Mary) عليهما السلام on the earth], We shall bring you altogether as mixed crowd (gathered out of various nations). (Tafsir Al-Qurtubi,).

(196) Likewise, We awakened them (from their long deep sleep) that they might question one another. A speaker from among them said: "How long have you stayed (here)?" They said: "We have stayed (perhaps) a day or part of a day." They said: "Your Lord (Alone) knows best how long you have stayed (here). So send one of you with this silver coin of yours to the town, and let him find out which is the good lawful food, and bring some of that to you. And let him be careful and let no man know of you.

(197) "And I think not the Hour will ever come, and if indeed I am brought back to my Lord, (on the day of Resurrection), I surely shall find better than this when I return to Him."

(198) There (on the day of Resurrection), Al-Walayah (protection, power, authority and kingdom) will be for Allah (Alone), the True God. He (Allah) is the Best for reward and the Best for the final end. (La ilaha illallah- none has the right to be worshipped but Allah).

(199) And (remember) the day We shall cause the mountains to pass away (like clouds of dust), and you will see the earth as a levelled plain, and we shall gather them all together so as to leave not one of them behind.

(200) And (remember) the day He will say: "Call those (so-called) partners of Mine whom you pretended." Then they will cry unto them, but they will not answer them, and We shall put a Maubiq (barrier) between them.