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

(81) O ye assembly of the jinn and humankind! Came there not unto you messengers of your own who recounted unto you My tokens and warned you of the meeting of this your day? They will say: We testify against ourselves. And the life of the world beguiled them. And they testify against themselves that they were disbelievers.

(82) He it is Who produceth gardens trellised and untrellised, and the date-palm, and crops of divers flavour, and the olive and the pomegranate, like and unlike. Eat ye of the fruit thereof when it fruiteth, and pay the due thereof upon the harvest day, and be not prodigal. Lo! Allah loveth not the prodigals.

(83) Wait they, indeed, for nothing less than that the angels should come unto them, or thy Lord should come, or there should come one of the portents from thy Lord? In the day when one of the portents from thy Lord cometh, its belief availeth naught a soul which theretofore believed not, nor in its belief earned good (by works). Say: Wait ye! Lo! We (too) are waiting.

(84) The weighing on that day is the true (weighing). As for those whose scale is heavy, they are the successful.

(85) He said: Reprieve me till the day when they are raised (from the dead).

(86) Say: Who hath forbidden the adornment of Allah which He hath brought forth for His bondmen, and the good things of His providing? Say: Such, on the day of Resurrection, will be only for those who believed during the life of the world. Thus do we detail Our revelations for people who have knowledge.

(87) Who debar (men) from the path of Allah and would have it crooked, and who are disbelievers in the Last day.

(88) Who took their religion for a sport and pastime, and whom the life of the world beguiled. So this day We have forgotten them even as they forgot the meeting of this their day and as they used to deny Our tokens.

(89) Await they aught save the fulfilment thereof? On the day when the fulfilment thereof cometh, those who were before forgetful thereof will say: The messengers of our Lord did bring the Truth! Have we any intercessors, that they may intercede for us? Or can we be returned (to life on earth), that we may act otherwise than we used to act? They have lost their souls, and that which they devised hath failed them.

(90) Lo! your Lord is Allah Who created the heavens and the earth in six days, then mounted He the Throne. He covereth the night with the day, which is in haste to follow it, and hath made the sun and the moon and the stars subservient by His command. His verily is all creation and commandment. Blessed be Allah, the Lord of the Worlds!