The word for today is…

doomsday (noun):

1 : a day of final judgment
2 : a time of catastrophic destruction and death

Source : Online Etymology Dictionary

Etymology : In medieval England doomsday was expected when the world’s age had reached 6,000 years from the creation, which was thought to have been in 5200 BC. Bede, c. 720 AD, complained of being pestered by rustici asking him how many years till the sixth millennium ended. However there is no evidence for the story of a general panic in Christian Europe in the year 1000 AD.

Doomsday machine as the name of a hypothetical nuclear bomb powerful enough to wipe out human life (or all life) on earth is from 1960.

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David is a retired surgeon originally from London who came to New Zealand twenty-seven years ago after being delayed in Singapore for thirteen years on leaving the UK. He was coerced into studying Latin...