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February 23 is Diesel Engine Day, a time to appreciate the influence and stellar performance of diesel engines in our everyday lives, driving locomotives, trucks, and numerous industrial applications. It's also Pinocchio Day, Play Tennis Day, National Dog Biscuit Day, and more.

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Interesting Facts of February 23rd

  1. 1. There are 311 days remaining until the end of the year (or 312 days in leap years).
  2. 2. Charles Martin Hall used an inexpensive method to produce aluminum for the first time on this day in 1886.
  3. 3. February 23, 1455 is traditionally dated as the day the Gutenberg Bible (first major book printed using mass-produced movable type) was published.
  4. 4. German theoretical physicist Werner Heisenberg wrote a letter to fellow physicist Wolfgang Pauli on February 23, 1927, in which he described his uncertainty principle for the first time.