The temperature on February 23, 1879 was about -4.1 °C. The air pressure was 1 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 93%. Source: KNMI
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
April 23 » Fire burns down the second main building and dome of the University of Notre Dame, which prompts the construction of the third, and current, Main Building with its golden dome.
May 2 » The Spanish Socialist Workers' Party is founded in Madrid by Pablo Iglesias.
May 14 » The first group of 463 Indian indentured laborers arrives in Fiji aboard the Leonidas.
July 4 » Anglo-Zulu War: The Zululand capital of Ulundi is captured by British troops and burned to the ground, ending the war and forcing King Cetshwayo to flee.
October 22 » Using a filament of carbonized thread, Thomas Edison tests the first practical electric incandescent light bulb (it lasts 13⁄2 hours before burning out).
Day of marriage May 14, 1904
The temperature on May 14, 1904 was between 9.5 °C and 21.3 °C and averaged 15.7 °C. There was 1.1 hours of sunshine (7%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 8 » The Blackstone Library is dedicated, marking the beginning of the Chicago Public Library system.
February 7 » A fire begins in Baltimore, Maryland; it destroys over 1,500 buildings in 30 hours.
May 10 » The Horch & Cir. Motorwagenwerke AG is founded. It would eventually become the Audi company.
August 10 » Russo-Japanese War: The Battle of the Yellow Sea between the Russian and Japanese battleship fleets takes place.
October 4 » The IFK Göteborg football club is founded in Sweden.
October 27 » The first underground New York City Subway line opens, later designated as the IRT Broadway–Seventh Avenue Line.
Day of death September 7, 1967
The temperature on September 7, 1967 was between 6.0 °C and 17.5 °C and averaged 11.3 °C. There was 5.1 hours of sunshine (38%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
April 21 » A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d'état, establishing a military regime that lasts for seven years.
June 23 » Cold War: U.S. President Lyndon B. Johnson meets with Soviet Premier Alexei Kosygin in Glassboro, New Jersey for the three-day Glassboro Summit Conference.
August 14 » UK Marine Broadcasting Offences Act declares participation in offshore pirate radio illegal.
October 18 » The Soviet probe Venera 4 reaches Venus and becomes the first spacecraft to measure the atmosphere of another planet.
November 14 » American physicist Theodore Maiman is given a patent for his ruby laser systems, the world's first laser.
November 17 » Vietnam War: Acting on optimistic reports that he had been given on November 13, U.S. President Lyndon B. Johnson tells the nation that, while much remained to be done, "We are inflicting greater losses than we're taking...We are making progress."
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I59688.php : accessed October 16, 2026), "Hendrik Helder (1879-1967)".
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