Translation of the verse 55 from Surah Al-hajj : Number of verses 78 - - page 338 - Part 17.
And those who disbelieve will not cease to be in doubt about it (this Quran) until the Hour comes suddenly upon them, or there comes to them the torment of the Day after which there will be no night (i.e. the Day of Resurrection).
But those who disbelieve will not cease to be in doubt of it until the Hour comes upon them unexpectedly or there comes to them the punishment of a barren Day.
(22:55) Yet the disbelievers will always remain in doubt about it until the Hour of Resurrection overtakes them suddenly or the scourge of a "barren" day *102 descends upon them.
*102) The epithet "barren" has been applied to the "day" in its metaphorical and not literal sense. :A "day" is barren if all the plans, hopes and devices remain unproductive in it, or it dces not bring forth its night. For instance, the days on which the people of Prophet Noah, the tribes of `Ad and _Thamud, the people of Lot and of Midian met with their destruction by scourge from Allah, were barren days in this sense, because those days did not bring forth any "tomorrow" for them, and no device of theirs could avert their doom.