Time of final reckoning (8)

I believe the answer is:

doomsday

(Other definitions for doomsday that I've seen before include "End of the world, Last Judgement" , "Moody ads for time of the Last Judgement" , "Time of final judgement" , "Unhappy time" , "Last moment of the world" .)

I've seen this clue in The Times.

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