The temperature on February 17, 1855 was about -15.8 °C. The air pressure was 1 kgf/m2 and came mainly from the northeast. The atmospheric humidity was 96%. Source: KNMI
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De Republiek der Verenigde Nederlanden werd in 1794-1795 door de Fransen veroverd onder leiding van bevelhebber Charles Pichegru (geholpen door de Nederlander Herman Willem Daendels); de verovering werd vergemakkelijkt door het dichtvriezen van de Waterlinie; Willem V moest op 18 januari 1795 uitwijken naar Engeland (en van daaruit in 1801 naar Duitsland); de patriotten namen de macht over van de aristocratische regenten en proclameerden de Bataafsche Republiek; op 16 mei 1795 werd het Haags Verdrag gesloten, waarmee ons land een vazalstaat werd van Frankrijk; in 3.1796 kwam er een Nationale Vergadering; in 1798 pleegde Daendels een staatsgreep, die de unitarissen aan de macht bracht; er kwam een nieuwe grondwet, die een Vertegenwoordigend Lichaam (met een Eerste en Tweede Kamer) instelde en als regering een Directoire; in 1799 sloeg Daendels bij Castricum een Brits-Russische invasie af; in 1801 kwam er een nieuwe grondwet; bij de Vrede van Amiens (1802) kreeg ons land van Engeland zijn koloniën terug (behalve Ceylon); na de grondwetswijziging van 1805 kwam er een raadpensionaris als eenhoofdig gezag, namelijk Rutger Jan Schimmelpenninck (van 31 oktober 1761 tot 25 maart 1825).
From April 19, 1853 till July 1, 1856 the Netherlands had a cabinet Van Hall - Donker Curtius with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. D. Donker Curtius (conservatief-liberaal).
February 12 » Michigan State University is established.
March 2 » Alexander II becomes Tsar of Russia.
May 3 » American adventurer William Walker departs from San Francisco with about 60 men to conquer Nicaragua.
July 4 » The first edition of Walt Whitman's book of poems, Leaves of Grass, is published In Brooklyn.
September 29 » The Philippine port of Iloilo is opened to world trade by the Spanish administration.
November 16 » David Livingstone becomes the first European to see the Victoria Falls in what is now Zambia-Zimbabwe.
Day of marriage May 16, 1884
The temperature on May 16, 1884 was about 16.3 °C. There was 1 mm of rain. The air pressure was 13 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 85%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 1 » The first volume (A to Ant) of the Oxford English Dictionary is published.
March 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
July 3 » Dow Jones & Company publishes its first stock average.
July 5 » Germany takes possession of Cameroon.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
Day of death November 21, 1924
The temperature on November 21, 1924 was between 6.1 °C and 10.1 °C and averaged 7.4 °C. There was 0.1 mm of rain. There was 0.9 hours of sunshine (11%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 8 » Capital punishment: The first state execution in the United States by gas chamber takes place in Nevada.
February 12 » George Gershwin's Rhapsody in Blue received its premiere in a concert titled "An Experiment in Modern Music", in Aeolian Hall, New York, by Paul Whiteman and his band, with Gershwin playing the piano.
March 3 » The 407-year-old Islamic caliphate is abolished, when Caliph Abdülmecid II of the Ottoman Caliphate is deposed. The last remnant of the old regime gives way to the reformed Turkey of Kemal Atatürk.
March 3 » The Free State of Fiume is annexed by the Kingdom of Italy.
December 19 » The last Rolls-Royce Silver Ghost is sold in London, England.
December 20 » Adolf Hitler is released from Landsberg Prison.
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/I77008.php : accessed February 10, 2026), "Jan Lourens Heldoorn (1855-1924)".
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