The word(s) "hours" appears 4 time(s) in 4 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) And keep up prayer in the two parts of the day and in the first hours of the night; surely good deeds take away evil deeds this is a reminder to the mindful.

(2) Bear then patiently what they say, and glorify your Lord by the praising of Him before the rising of the sun and before its setting, and during hours of the night do also glorify (Him) and during parts of the day, that you may be well pleased

(3) What! he who is obedient during hours of the night, prostrating himself and standing, takes care of the hereafter and hopes for the mercy of his Lord! Say: Are those who know and those who do not know alike? Only the men of understanding are mindful.

(4) I swear by the early hours of the day,