The temperature on July 13, 1889 was about 15.9 °C. There was 4 mm of rain. The air pressure was 4 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 96%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 22 » Columbia Phonograph is formed in Washington, D.C.
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
February 9 » US president Grover Cleveland signs a bill elevating the United States Department of Agriculture to a Cabinet-level agency.
May 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
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