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Why scientists once called 13 November 2026 'Doomsday'

Original: Scientists in 1960 predicted Friday 13 November 2026 will be 'Doomsday.' Should you be worried?

A claim is circulating that scientists in 1960 designated Friday 13 November 2026 as 'Doomsday'. The date matches the 'doomsday' in mathematician John Conway's calendar-calculation method, a mnemonic rather than a real prediction of catastrophe, and no verified 1960 forecast of an apocalypse on that day has been produced. Commentators are urging readers not to worry.

Why now: People are discussing it because the ominous-sounding 'Doomsday' label for a real upcoming Friday the 13th sounds alarming even though it refers to a calendar-calculation term.

John Conway13 November 2026

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