The temperature on January 4, 1890 was about 3.4 °C. There was 0.5 mm of rain. The air pressure was 3 kgf/m2 and came mainly from the south-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. Source: KNMI
March 20 » Prime Minister of the German Empire Otto von Bismarck is dismissed by Emperor Wilhelm II.
July 1 » Canada and Bermuda are linked by telegraph cable.
July 26 » In Buenos Aires, Argentina the Revolución del Parque takes place, forcing President Miguel Ángel Juárez Celman's resignation.
July 27 » Vincent van Gogh shoots himself and dies two days later.
September 24 » The Church of Jesus Christ of Latter-day Saints officially renounces polygamy.
December 29 » Wounded Knee Massacre on Pine Ridge Indian Reservation, 300 Lakota are killed by the United States 7th Cavalry Regiment.
Day of death May 18, 1968
The temperature on May 18, 1968 was between 2.6 °C and 11.3 °C and averaged 6.4 °C. There was 11.3 mm of rain during 5.4 hours. There was 2.7 hours of sunshine (17%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
March 7 » Vietnam War: The United States and South Vietnamese military begin Operation Truong Cong Dinh to root out Viet Cong forces from the area surrounding Mỹ Tho.
June 30 » Pope Paul VI issues the Credo of the People of God.
August 2 » An earthquake hits Casiguran, Aurora, Philippines killing more than 270 people and wounding 261.
September 24 » First episode of 60 Minutes airs on television.
September 30 » The Boeing 747 is rolled out and shown to the public for the first time.
November 22 » The Beatles release The Beatles (known popularly as The White Album).
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3669.php : accessed March 13, 2026), "Dirk Hendricus Wisman (1890-1968)".
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