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

(101) Those who deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) and the Meeting in the Hereafter (day of Resurrection,), vain are their deeds. Are they requited with anything except what they used to do?

(102) And ask them (O Muhammad صلى الله عليه وسلم) about the town that was by the sea; when they transgressed in the matter of the Sabbath (i.e. Saturday): when their fish came to them openly on the Sabbath day, and did not come to them on the day they had no Sabbath. Thus We made a trial of them, for they used to rebel against Allah's Command (disobey Allah) [see the Qur'an: V.4:154 and its footnote].

(103) And (remember) when your Lord declared that He would certainly keep on sending against them (i.e. the Jews), till the day of Resurrection, those who would afflict them with a humiliating torment. Verily, your Lord is Quick in Retribution (for the disobedient, wicked) and certainly He is Oft-Forgiving, Most Merciful (for the obedient and those who beg Allah's Forgiveness).

(104) And (remember) when your Lord brought forth from the Children of Adam, from their loins, their seed (or from Adam's loin his offspring) and made them testify as to themselves (saying): "Am I not your Lord?" They said: "Yes! We testify," lest you should say on the day of Resurrection: "Verily, we have been unaware of this."

(105) They ask you about the Hour (day of Resurrection): "When will be its appointed time?" Say: "The knowledge thereof is with my Lord (Alone). None can reveal its time but He. Heavy is its burden through the heavens and the earth. It shall not come upon you except all of a sudden." They ask you as if you have a good knowledge of it. Say: "The knowledge thereof is with Allah (Alone), but most of mankind know not."

(106) So, when the Qur'an is recited, listen to it, and be silent that you may receive mercy. [i.e. during the compulsory congregational prayers when the Imam (of a mosque) is leading the prayer (except Surat Al-Fatihah), and also when he is delivering the Friday-prayer Khutbah]. (Tafsir At-Tabari).

(107) And whoever turns his back to them on such a day - unless it be a stratagem of war, or to retreat to a troop (of his own), - he indeed has drawn upon himself wrath from Allah. And his abode is Hell, and worst indeed is that destination!

(108) And know that whatever of war-booty that you may gain, verily one-fifth (1/5th) of it is assigned to Allah, and to the Messenger, and to the near relatives [of the Messenger (Muhammad صلى الله عليه وسلم)], (and also) the orphans, Al-Masakin (the poor) and the wayfarer, if you have believed in Allah and in that which We sent down to Our slave (Muhammad صلى الله عليه وسلم) on the day of criterion (between right and wrong), the day when the two forces met (the battle of Badr); And Allah is able to do all things.

(109) And (remember) when you met (the army of the disbelievers on the day of the battle of Badr), He showed them to you as few in your eyes and He made you appear as few in their eyes, so that Allah might accomplish a matter already ordained (in His Knowledge), and to Allah return all matters (for decision).

(110) And (remember) when Shaitan (Satan) made their (evil) deeds seem fair to them and said, "No one of mankind can overcome you this day (of the battle of Badr) and verily, I am your neighbour (for each and every help)." But when the two forces came in sight of each other, he ran away and said "Verily, I have nothing to do with you. Verily! I see what you see not. Verily! I fear Allah for Allah is Severe in punishment."