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

(441) Lo! thou hast by day a chain of business.

(442) On the day when the earth and the hills rock, and the hills become a heap of running sand.

(443) Then how, if ye disbelieve, will ye protect yourselves upon the day which will turn children grey,

(444) Lo! thy Lord knoweth how thou keepest vigil sometimes nearly two-thirds of the night, or (sometimes) half or a third thereof, as do a party of those with thee. Allah measureth the night and the day. He knoweth that ye count it not, and turneth unto you in mercy. Recite, then, of the Qur'an that which is easy for you. He knoweth that there are sick folk among you, while others travel in the land in search of Allah's bounty, and others (still) are fighting for the cause of Allah. So recite of it that which is easy (for you), and establish worship and pay the poor-due, and (so) lend unto Allah a goodly loan. Whatsoever good ye send before you for your souls, ye will find it with Allah, better and greater in the recompense. And seek forgiveness of Allah. Lo! Allah is Forgiving, Merciful.

(445) Surely that day will be a day of anguish,

(446) And we used to deny the day of Judgment,

(447) Nay, I swear by the day of Resurrection;

(448) He asketh: When will be this day of Resurrection?

(449) On that day man will cry: Whither to flee!

(450) Unto thy Lord is the recourse that day.