The temperature on August 17, 1868 was about 33.0 °C. The air pressure was 3 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 43%. 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).
March 5 » Mefistofele, an opera by Arrigo Boito, receives its premiere performance at La Scala.
April 10 » At Arogee in Abyssinia, British and Indian forces defeat an army of Emperor Tewodros II. While 700 Ethiopians are killed and many more injured, only two British/Indian troops die.
May 26 » The Impeachment of Andrew Johnson ends with his acquittal by one vote.
September 23 » Grito de Lares ("Lares Revolt") occurs in Puerto Rico against Spanish rule.
November 2 » Time zone: New Zealand officially adopts a standard time to be observed nationally.
December 9 » 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.
Day of marriage May 23, 1896
The temperature on May 23, 1896 was about 11.9 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 87%. Source: KNMI
January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
March 1 » Henri Becquerel discovers radioactive decay.
April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
August 27 » Anglo-Zanzibar War: The shortest war in world history (09:02 to 09:40), between the United Kingdom and Zanzibar.
Day of death January 8, 1938
The temperature on January 8, 1938 was between 3.2 °C and 5.4 °C and averaged 3.9 °C. There was 1.0 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
July 10 » Howard Hughes begins a 91-hour airplane flight around the world that will set a new record.
August 18 » The Thousand Islands Bridge, connecting New York, United States with Ontario, Canada over the Saint Lawrence River, is dedicated by U.S. President Franklin D. Roosevelt.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
October 30 » Orson Welles broadcasts his radio play of H. G. Wells's The War of the Worlds, causing anxiety in some of the audience in the United States.
November 14 » The Lions Gate Bridge, connecting Vancouver to the North Shore region, opens to traffic.
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/I201589.php : accessed October 24, 2026), "Roelf Groeneveld (1868-1938)".
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