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

(241) And many a township did We destroy while it was given to wrong-doing, so that it lies in ruins (up to this day), and (many) a deserted well and lofty castle!

(242) And they ask you to hasten on the torment! And Allah fails not His Promise. And verily, a day with your Lord is as a thousand years of what you reckon.

(243) And those who disbelieved will not cease to be in doubt about it (this Qur'an) until the Hour comes suddenly upon them, or there comes to them the torment of the day after which there will be no night (i.e. the day of Resurrection).

(244) The sovereignty on that day will be that of Allah (the One Who has no partners). He will judge between them. So those who believed (in the Oneness of Allah - Islamic Monotheism) and did righteous good deeds will be in Gardens of delight (Paradise).

(245) That is because Allah merges the night into the day, and He merges the day into the night. And verily, Allah is All-Hearer, All-Seer.

(246) It is He, Who gave you life, and then will cause you to die, and will again give you life (on the day of Resurrection). Verily man is indeed an ingrate.

(247) For every nation We have ordained religious ceremonies [e.g. slaughtering of the cattle during the three days of stay at Mina (Makkah) during the Hajj (pilgrimage)] which they must follow; so let them (the pagans) not dispute with you on the matter (i.e. to eat of the cattle which you slaughter, and not to eat of the cattle which Allah kills by its natural death), but invite them to your Lord. Verily you (O Muhammad صلى الله عليه وسلم) indeed are on the (true) straight guidance (i.e. the true religion of Islamic Monotheism).

(248) "Allah will judge between you on the day of Resurrection about that wherein you used to differ."

(249) Then (again), surely, you will be resurrected on the day of Resurrection.

(250) Invoke not loudly this day! Certainly you shall not be helped by Us.