The temperature on July 25, 1889 was about 14.0 °C. There was 2 mm of rain. The air pressure was 64 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 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.
January 22 » Columbia Phonograph is formed in Washington, D.C.
March 31 » The Eiffel Tower is officially opened.
June 6 » The Great Seattle Fire destroys all of downtown Seattle.
November 8 » Montana is admitted as the 41st U.S. state.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of marriage August 15, 1913
The temperature on August 15, 1913 was between 8.2 °C and 19.3 °C and averaged 13.8 °C. There was 7.6 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 4 » The United States Department of Labor is formed.
March 31 » The Vienna Concert Society rioted during a performance of modernist music by Arnold Schoenberg, Alban Berg, Alexander von Zemlinsky, and Anton von Webern, causing a premature end to the concert due to violence; this concert became known as the Skandalkonzert.
May 30 » The Treaty of London is signed, ending the First Balkan War; Albania becomes an independent nation.
July 12 » Serbian forces begin their siege of the Bulgarian city of Vidin; the siege is later called off when the war ends.
July 31 » The Balkan States sign an armistice in Bucharest.
August 28 » Queen Wilhelmina opens the Peace Palace in The Hague.
Day of death February 20, 1971
The temperature on February 20, 1971 was between -3.6 °C and 6.5 °C and averaged 1.7 °C. There was 1.6 mm of rain during 1.6 hours. The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
February 8 » South Vietnamese ground troops launch an incursion into Laos to try to cut off the Ho Chi Minh trail and stop communist infiltration.
April 1 » Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh.
May 30 » Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars.
June 7 » The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.
July 11 » Copper mines in Chile are nationalized.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I107327.php : accessed March 5, 2026), "Hendrik Christiaan Naves (1889-1971)".
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