The temperature on April 5, 1868 was about 18.7 °C. The air pressure was 6 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 42%. 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).
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.
April 11 » Former shōgun Tokugawa Yoshinobu surrenders Edo Castle to Imperial forces, marking the end of the Tokugawa shogunate.
May 16 » The United States Senate fails to convict President Andrew Johnson by one vote.
July 9 » The 14th Amendment to the United States Constitution is ratified, guaranteeing African Americans full citizenship and all persons in the United States due process of law.
September 25 » The Imperial Russian steam frigate Alexander Nevsky is shipwrecked off Jutland while carrying Grand Duke Alexei Alexandrovich of Russia.
November 30 » A statue of King Charles XII of Sweden is inaugurated in Stockholm's Kungsträdgården.
Day of marriage June 1, 1895
The temperature on June 1, 1895 was about 18.1 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 84%. Source: KNMI
January 12 » The National Trust is founded in the United Kingdom.
April 24 » Joshua Slocum, the first person to sail single-handedly around the world, sets sail from Boston, Massachusetts aboard the sloop "Spray".
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
Day of death June 12, 1948
The temperature on June 12, 1948 was between 14.8 °C and 29.7 °C and averaged 22.5 °C. There was 12.8 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I1971.php : accessed September 24, 2026), "PIETER de GRAAF (1868-1948)".
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