The temperature on August 28, 1889 was about 14.5 °C. There was 1 mm of rain. The air pressure was 2 kgf/m2 and came mainly from the southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 98%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
July 11 » Tijuana, Mexico, is founded.
August 4 » The Great Fire of Spokane, Washington destroys some 32 blocks of the city, prompting a mass rebuilding project.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
When copying data from this family tree, please include a reference to the origin: P.Heres, "stamboom Mondria", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-mondria/I1099512897.php : accessed June 24, 2024), "Wolter van Ommen (1846-1889)".
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