The word(s) "hour" appears 56 time(s) in 51 verse(s) in Quran in Muhammad Pickthal translation.

(31) Those who disbelieve say: The hour will never come unto us. Say: Nay, by my Lord, but it is coming unto you surely. (He is) the Knower of the Unseen. Not an atom's weight, or less than that or greater, escapeth Him in the heavens or in the earth, but it is in a clear Record,

(32) Say (O Muhammad): Yours is the promise of a Day which ye cannot postpone nor hasten by an hour.

(33) The Fire; they are exposed to it morning and evening; and on the day when the hour upriseth (it is said): Cause Pharaoh's folk to enter the most awful doom.

(34) Then have patience (O Muhammad). Lo! the promise of Allah is true. And ask forgiveness of thy sin, and hymn the praise of thy Lord at fall of night and in the early hours.

(35) Lo! the hour is surely coming, there is no doubt thereof; yet most of mankind believe not.

(36) Unto Him is referred (all) knowledge of the hour. And no fruits burst forth from their sheaths, and no female carrieth or bringeth forth but with His knowledge. And on the day when He calleth unto them: Where are now My partners? they will say: We confess unto Thee, not one of us is a witness (for them).

(37) And verily, if We cause him to taste mercy after some hurt that hath touched him, he will say: This is my own; and I deem not that the hour will ever rise, and if I am brought back to my Lord, I surely shall be better off with Him - But We verily shall tell those who disbelieve (all) that they did, and We verily shall make them taste hard punishment.

(38) Allah it is Who hath revealed the Scripture with truth, and the Balance. How canst thou know? It may be that the hour is nigh.

(39) Those who believe not therein seek to hasten it, while those who believe are fearful of it and know that it is the Truth. Are not they who dispute, in doubt concerning the hour, far astray?

(40) And lo! verily there is knowledge of the hour. So doubt ye not concerning it, but follow Me. This is the right path.