The temperature on April 3, 1888 was about 4.1 °C. The air pressure was 12 kgf/m2 and came mainly from the north-northwest. The airpressure was 75 cm mercury. The atmospheric humidity was 63%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
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.
March 20 » The premiere of the very first Romani language operetta is staged in Moscow, Russia.
May 16 » Nikola Tesla delivers a lecture describing the equipment which will allow efficient generation and use of alternating currents to transmit electric power over long distances.
June 15 » Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire. Due to the death of his predecessors Wilhelm I and Frederick III, 1888 is the Year of the Three Emperors.
July 15 » The stratovolcano Mount Bandai erupts killing approximately 500 people, in Fukushima Prefecture, Japan.
August 21 » The first successful adding machine in the United States is patented by William Seward Burroughs.
September 8 » Isaac Peral's submarine is first tested.
Day of marriage June 1, 1910
The temperature on June 1, 1910 was between 11.4 °C and 16.9 °C and averaged 14.0 °C. There was 0.4 mm of rain. There was 0.2 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 1 » Captain David Beatty is promoted to Rear admiral, and becomes the youngest admiral in the Royal Navy (except for Royal family members) since Horatio Nelson.
May 11 » An act of the U.S. Congress establishes Glacier National Park in Montana.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
October 1 » A large bomb destroys the Los Angeles Times building, killing 21.
October 11 » Piloted by Arch Hoxsey, Theodore Roosevelt becomes the first U.S. president to fly in an airplane.
October 21 » HMSNiobe arrives in Halifax Harbour to become the first ship of the Royal Canadian Navy.
Day of death April 4, 1961
The temperature on April 4, 1961 was between 2.3 °C and 9.4 °C and averaged 6.2 °C. There was 0.6 mm of rain during 1.4 hours. There was 0.1 hours of sunshine (1%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 3 » Cold War: The United States severs diplomatic relations with Cuba over the latter's nationalization of American assets.
April 20 » Cold War: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.
May 5 » Alan Shepard becomes the first American to travel into outer space, on a sub-orbital flight.
September 10 » In the Italian Grand Prix, a crash causes the death of German Formula One driver Wolfgang von Trips and 13 spectators who are hit by his Ferrari, the deadliest accident in F1 history.
September 16 » Pakistan establishes its Space and Upper Atmosphere Research Commission with Abdus Salam as its head.
October 1 » East and West Cameroon merge to form the Federal Republic of Cameroon.
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/I8634.php : accessed January 29, 2026), "Hendrik Daniel Obbes (1888-1961)".
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