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

(371) And thou wilt see each nation crouching, each nation summoned to its record. (And it will be said unto them): This day ye are requited what ye used to do.

(372) And it will be said: This day We forget you, even as ye forgot the meeting of this your day; and your habitation is the Fire, and there is none to help you.

(373) This, forasmuch as ye made the revelations of Allah a jest, and the life of the world beguiled you. Therefor this day they come not forth from thence, nor can they make amends.

(374) And who is further astray than those who, instead of Allah, pray unto such as hear not their prayer until the day of Resurrection, and are unconscious of their prayer,

(375) And on the day when those who disbelieve are exposed to the Fire (it will be said): Ye squandered your good things in the life of the world and sought comfort therein. Now this day ye are rewarded with the doom of ignominy because ye were disdainful in the land without a right, and because ye used to transgress.

(376) And make mention (O Muhammad) of the brother of A'ad when he warned his folk among the wind-curved sandhills - and verily warners came and went before and after him - saying: Serve none but Allah. Lo! I fear for you the doom of a tremendous day.

(377) And on the day when those who disbelieve are exposed to the Fire (they will be asked): Is not this real? They will say: Yea, by our Lord. He will say: Then taste the doom for that ye disbelieved.

(378) Then have patience (O Muhammad) even as the stout of heart among the messengers (of old) had patience, and seek not to hasten on (the doom) for them. On the day when they see that which they are promised (it will seem to them) as though they had tarried but an hour of daylight. A clear message. Shall any be destroyed save evil-living folk?

(379) That ye (mankind) may believe in Allah and His messenger, and may honour Him, and may revere Him, and may glorify Him at early dawn and at the close of day.

(380) And the trumpet is blown. This is the threatened day.