The temperature on May 20, 1787 was about 11.0 °C. Wind direction mainly east. Weather type: helder. Special wheather fenomena: noorderlicht. Source: KNMI
January 11 » William Herschel discovers Titania and Oberon, two moons of Uranus.
May 25 » After a delay of 11 days, the United States Constitutional Convention formally convenes in Philadelphia after a quorum of seven states is secured.
June 20 » Oliver Ellsworth moves at the Federal Convention to call the government the 'United States'.
July 13 » The Continental Congress enacts the Northwest Ordinance establishing governing rules for the Northwest Territory. It also establishes procedures for the admission of new states and limits the expansion of slavery.
September 28 » The Congress of the Confederation votes to send the newly-written United States Constitution to the state legislatures for approval.
October 29 » Mozart's opera Don Giovanni receives its first performance in Prague.
Day of marriage May 2, 1816
The temperature on May 2, 1816 was about 12.0 °C. Wind direction mainly north-northeast. Weather type: half bewolkt. 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).
January 9 » Humphry Davy tests his safety lamp for miners at Hebburn Colliery.
May 2 » Marriage of Léopold of Saxe-Coburg and Princess Charlotte of Wales.
June 19 » Battle of Seven Oaks between North West Company and Hudson's Bay Company, near Winnipeg, Manitoba, Canada.
July 2 » The French frigateMéduse strikes the Bank of Arguin and 151 people on board have to be evacuated on an improvised raft, a case immortalised by Géricault's painting The Raft of the Medusa.
August 5 » The British Admiralty dismisses Francis Ronalds's new invention of the first working electric telegraph as "wholly unnecessary", preferring to continue using the semaphore.
August 24 » The Treaty of St. Louis is signed in St. Louis, Missouri.
Day of death October 15, 1860
The temperature on October 15, 1860 was about 11.4 °C. There was 1 mm of rain. The air pressure was 6 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 77%. Source: KNMI
From March 18, 1858 till February 23, 1860 the Netherlands had a cabinet Rochussen - Van Bosse with the prime ministers J.J. Rochussen (conservatief-liberaal) and Mr. P.P. van Bosse (liberaal).
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
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/I15912.php : accessed February 1, 2026), "Petronelia du Cler (1787-1860)".
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