The word(s) "day" appears 568 time(s) in 513 verse(s) in Quran in Muhammad Pickthal translation.

(91) We sent Noah (of old) unto his people, and he said: O my people! Serve Allah. Ye have no other Allah save Him. Lo! I fear for you the retribution of an Awful day.

(92) Or are the people of the townships then secure from the coming of Our wrath upon them in the daytime while they play?

(93) Ask them (O Muhammad) of the township that was by the sea, how they did break the Sabbath, how their big fish came unto them visibly upon their Sabbath day and on a day when they did not keep Sabbath came they not unto them. Thus did We try them for that they were evil-livers.

(94) And (remember) when thy Lord proclaimed that He would raise against them till the day of Resurrection those who would lay on them a cruel torment. Lo! verily thy Lord is swift in prosecution and lo! verily He is Forgiving, Merciful.

(95) And (remember) when thy Lord brought forth from the Children of Adam, from their reins, their seed, and made them testify of themselves, (saying): Am I not your Lord? They said: Yea, verily. We testify. (That was) lest ye should say at the day of Resurrection: Lo! of this we were unaware;

(96) Whoso on that day turneth his back to them, unless manoeuvring for battle or intent to join a company, he truly hath incurred wrath from Allah, and his habitation will be hell, a hapless journey's end.

(97) And know that whatever ye take as spoils of war, lo! a fifth thereof is for Allah, and for the messenger and for the kinsman (who hath need) and orphans and the needy and the wayfarer, if ye believe in Allah and that which We revealed unto Our slave on the day of Discrimination, the day when the two armies met. And Allah is Able to do all things.

(98) When ye were on the near bank (of the valley) and they were on the yonder bank, and the caravan was below you (on the coast plain). And had ye trysted to meet one another ye surely would have failed to keep the tryst, but (it happened, as it did, without the forethought of either of you) that Allah might conclude a thing that must be done; that he who perished (on that day) might perish by a clear proof (of His Sovereignty) and he who survived might survive by a clear proof (of His Sovereignty). Lo! Allah in truth is Hearer, Knower.

(99) And when Satan made their deeds seem fair to them and said: No-one of mankind can conquer you this day, for I am your protector. But when the armies came in sight of one another, he took flight, saying: Lo! I am guiltless of you. Lo! I see that which ye see not. Lo! I fear Allah. And Allah is severe in punishment.

(100) And a proclamation from Allah and His messenger to all men on the day of the Greater Pilgrimage that Allah is free from obligation to the idolaters, and (so is) His messenger. So, if ye repent, it will be better for you; but if ye are averse, then know that ye cannot escape Allah. Give tidings (O Muhammad) of a painful doom to those who disbelieve,