The word(s) "hour" appears 53 time(s) in 48 verse(s) in Quran in Muhammad Habib Shakir translation.

(31) To Him is referred the knowledge of the hour, and there come not forth any of the fruits from their coverings, nor does a female bear, nor does she give birth, but with His knowledge; and on the day when He shall call out to them, Where are (those whom you called) My associates? They shall say: We declare to Thee, none of us is a witness.

(32) And if We make him taste mercy from Us after distress that has touched him, he would most certainly say: This is of me, and I do not think the hour will come to pass, and if I am sent back to my Lord, I shall have with Him sure good; but We will most certainly inform those who disbelieved of what they did, and We will most certainly make them taste of hard chastisement.

(33) Allah it is Who revealed the Book with truth, and the balance, and what shall make you know that haply the hour be nigh?

(34) Those who do not believe in it would hasten it on, and those who believe are in fear from it, and they know that it is the truth. Now most surely those who dispute obstinately concerning the hour are in a great error.

(35) And most surely it is a knowledge of the hour, therefore have no doubt about it and follow me: this is the right path.

(36) Do they wait for aught but the hour, that it should come! upon them all of a sudden while they do not perceive?

(37) And blessed is He Whose is the kingdom of the heavens and the earth and what is between them, and with Him is the knowledge of the hour, and to Him shall you be brought back.

(38) Thus (shall it be), and We will wed them with houris pure, beautiful ones.

(39) And Allah's is the kingdom of the heavens and the earth; and on the day when the hour shall come to pass, on that day shall they perish who say false things.

(40) And when it was said, Surely the promise of Allah is true and as for the hour, there is no doubt about it, you said: We do not know what the hour is; we do not think (that it will come to pass) save a passing thought, and we are not at all sure.