On this day: July 23

July 23: Revolution Day in Egypt (1952)

• 1829 – William Austin Burt was awarded a patent for the typographer, the first practical typewriting machine.
• 1914 – Austria-Hungary presented Serbia with an ultimatum to allow them to investigate the assassination of Archduke Franz Ferdinand, that Serbia would ultimately reject, leading to World War I.
• 1940 – US Under Secretary of State Sumner Welles issued a declaration that the US would not recognize the Soviet Union's annexation of the Baltic states.
• 1995 – Hale–Bopp, one of the most widely observed comets of the twentieth century, was discovered by two independent observers, Alan Hale and Thomas Bopp, at a great distance from the Sun.
• 2012 – A solar storm (pictured) of similar intensity to the Carrington Event, which caused one of the largest geomagnetic storms ever recorded, erupted from the Sun and missed the Earth by a small margin.

• More anniversaries:
  • July 22
  • July 23
  • July 24

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• Current date: July 23, 2015 (UTC)
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