The temperature on March 13, 1891 was about 9.7 °C. The air pressure was 2 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 56%. Source: KNMI
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
March 10 » Almon Strowger patents the Strowger switch, a device which led to the automation of telephone circuit switching.
May 15 » Pope Leo XIII defends workers' rights and property rights in the encyclical Rerum novarum, the beginning of modern Catholic social teaching.
May 16 » The International Electrotechnical Exhibition opens in Frankfurt, Germany, and will feature the world's first long-distance transmission of high-power, three-phase electric current (the most common form today).
August 24 » Thomas Edison patents the motion picture camera.
October 28 » The Mino–Owari earthquake is the largest inland earthquake in Japan's history.
December 22 » Asteroid 323 Brucia becomes the first asteroid discovered using photography.
Day of marriage June 18, 1918
The temperature on June 18, 1918 was between 6.4 °C and 18.5 °C and averaged 12.8 °C. There was 3.4 mm of rain. There was 9.4 hours of sunshine (56%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. 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.
February 24 » Estonian Declaration of Independence.
June 1 » World War I: Western Front: Battle of Belleau Wood: Allied Forces under John J. Pershing and James Harbord engage Imperial German Forces under Wilhelm, German Crown Prince.
August 11 » World War I: The Battle of Amiens ends.
October 10 » RMS Leinster is torpedoed and sunk by UB-123, killing 564, the worst-ever on the Irish Sea.
November 7 » Kurt Eisner overthrows the Wittelsbach dynasty in the Kingdom of Bavaria.
November 21 » The Flag of Estonia, previously used by pro-independence activists, is formally adopted as the national flag of the Republic of Estonia.
Day of death May 20, 1970
The temperature on May 20, 1970 was between 5.6 °C and 15.4 °C and averaged 11.1 °C. There was 7.8 hours of sunshine (49%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 15 » Nigerian Civil War: Biafran rebels surrender following an unsuccessful 32-month fight for independence from Nigeria.
May 4 » Vietnam War: Kent State shootings: The Ohio National Guard, sent to Kent State University after disturbances in the city of Kent the weekend before, opens fire killing four unarmed students and wounding nine others. The students were protesting the Cambodian Campaign of the United States and South Vietnam.
August 26 » A new feminist movement leads a nationwide Women's Strike for Equality.
November 12 » The Oregon Highway Division attempts to destroy a rotting beached Sperm whale with explosives, leading to the now infamous "exploding whale" incident.
November 18 » U.S. President Richard Nixon asks the U.S. Congress for $155 million in supplemental aid for the Cambodian government.
December 17 » Polish protests: In Gdynia, soldiers fire at workers emerging from trains, killing dozens.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I513116.php : accessed March 15, 2026), "Petrus Charles Simons (1891-1970)".
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