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17, Jul 2026
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Important Days

Earth rotation day 2025 - January 08

January 11 , 2025 552 days 1667 0
  • This day celebrates the anniversary of French physicist Leon Foucault’s 1851 proof that the Earth rotates on its axis.
  • The day also honours Foucault’s first public demonstration in Paris.
  • It was 470 BC, the Greeks claimed that the earth moved on itself.
  • But Foucault demonstrated the world’s rotation with the help of a pendulum.


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