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.
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.
August 6 » Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia, Pennsylvania.
October 1 » Russians under Alexander Suvorov defeat the Turks at Kinburn.
December 18 » New Jersey becomes the third state to ratify the U.S. Constitution.
Day of death September 18, 1868
The temperature on September 18, 1868 was about 19.8 °C. There was 0.2 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 73%. Source: KNMI
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
May 16 » The United States Senate fails to convict President Andrew Johnson by one vote.
May 26 » The Impeachment of Andrew Johnson ends with his acquittal by one vote.
June 1 » The Treaty of Bosque Redondo is signed, allowing the Navajo to return to their lands in Arizona and New Mexico.
August 13 » The 8.5–9.0 Mw Arica earthquake struck southern Peru with a maximum Mercalli intensity of XI (Extreme), causing 25,000+ deaths and a destructive basin wide tsunami that affected Hawaii and New Zealand.
September 19 » La Gloriosa begins in Spain.
December 10 » The first traffic lights are installed, outside the Palace of Westminster in London. Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.
When copying data from this family tree, please include a reference to the origin: Wesley Brown, "The Brown Tree", database, Genealogy Online (https://www.genealogieonline.nl/the-brown-tree/P3204.php : accessed February 4, 2026), "Helena SPIEGELHALTER (1787-1868)".
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