The temperature on March 28, 1868 was about 7.7 °C. The air pressure was 12 kgf/m2 and came mainly from the northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 72%. 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 1 » The Pi Kappa Alpha fraternity is founded at the University of Virginia.
March 5 » Mefistofele, an opera by Arrigo Boito, receives its premiere performance at La Scala.
June 10 » Mihailo Obrenović III, Prince of Serbia is assassinated.
August 18 » French astronomer Pierre Janssen discovers helium.
September 25 » The Imperial Russian steam frigate Alexander Nevsky is shipwrecked off Jutland while carrying Grand Duke Alexei Alexandrovich of Russia.
October 10 » The Ten Years' War begins against Spanish rule in Cuba.
Day of death May 20, 1918
The temperature on May 20, 1918 was between 8.9 °C and 24.0 °C and averaged 16.4 °C. There was 12.1 hours of sunshine (76%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 4 » The Finnish Declaration of Independence is recognized by Russia, Sweden, Germany and France.
May 29 » Armenia defeats the Ottoman Army in the Battle of Sardarabad.
July 17 » Tsar Nicholas II of Russia and his immediate family and retainers are executed by Bolshevik Chekists at the Ipatiev House in Yekaterinburg, Russia.
October 29 » The German High Seas Fleet is incapacitated when sailors mutiny on the night of the 29th-30th, an action which would trigger the German Revolution of 1918–19.
November 21 » The Parliament (Qualification of Women) Act 1918 is passed, allowing women to stand for Parliament in the UK.
December 14 » Portuguese President Sidónio Pais is assassinated.
When copying data from this family tree, please include a reference to the origin: Tonny de Groot, "Genealogy De Groot", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-de-groot/I31030.php : accessed June 11, 2024), "Petrus Johannes van der Doef (1868-1918)".
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