The temperature on May 15, 1891 was about 14.9 °C. The air pressure was 1 kgf/m2 and came mainly from the southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 74%. 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.
February 15 » Allmänna Idrottsklubben (AIK) (Swedish Sports Club) is founded.
March 3 » Shoshone National Forest is established as the first national forest in the US and world.
May 5 » The Music Hall in New York City (later known as Carnegie Hall) has its grand opening and first public performance, with Tchaikovsky as the guest conductor.
May 15 » Pope Leo XIII defends workers' rights and property rights in the encyclical Rerum novarum, the beginning of modern Catholic social teaching.
August 16 » The Basilica of San Sebastian, Manila, the first all-steel church in Asia, is officially inaugurated and blessed.
October 28 » The Mino–Owari earthquake is the largest inland earthquake in Japan's history.
Day of marriage May 4, 1912
The temperature on May 4, 1912 was between 5.1 °C and 12.1 °C and averaged 8.7 °C. There was 0.1 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
March 6 » Italo-Turkish War: Italian forces become the first to use airships in war, as two dirigibles drop bombs on Turkish troops encamped at Janzur, from an altitude of 6,000 feet.
April 14 » The British passenger liner RMSTitanic hits an iceberg in the North Atlantic at 23:40 (sinks morning of April 15th).
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
September 28 » The Ulster Covenant is signed by some 500,000 Ulster Protestant Unionists in opposition to the Third Irish Home Rule Bill.
November 19 » First Balkan War: The Serbian Army captures Bitola, ending the five-century-long Ottoman rule of Macedonia.
Day of death June 15, 1948
The temperature on June 15, 1948 was between 11.5 °C and 18.5 °C and averaged 15.6 °C. There was 1.0 mm of rain during 2.3 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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).
February 4 » Ceylon (later renamed Sri Lanka) becomes independent within the British Commonwealth.
May 9 » Czechoslovakia's Ninth-of-May Constitution comes into effect.
May 26 » The U.S. Congress passes Public Law 80-557, which permanently establishes the Civil Air Patrol as an auxiliary of the United States Air Force.
June 7 » Edvard Beneš resigns as President of Czechoslovakia rather than signing the Ninth-of-May Constitution, making his nation a Communist state.
June 26 » Cold War: The first supply flights are made in response to the Berlin Blockade.
October 30 » A luzzu fishing boat overloaded with passengers capsizes and sinks in the Gozo Channel off Qala, Gozo, Malta, killing 23 of the 27 people on board.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I16628.php : accessed March 2, 2026), "Grietje Keizer (1891-1948)".
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