The temperature on June 13, 1884 was about 18.5 °C. The air pressure was 2 kgf/m2 and came mainly from the north. The airpressure was 77 cm mercury. The atmospheric humidity was 61%. 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.
March 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
July 3 » Dow Jones & Company publishes its first stock average.
July 5 » Germany takes possession of Cameroon.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
December 6 » The Washington Monument in Washington, D.C., is completed.
Day of death April 26, 1967
The temperature on April 26, 1967 was between 1.6 °C and 14.9 °C and averaged 8.6 °C. There was 12.5 hours of sunshine (86%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 29 » The "ultimate high" of the hippie era, the Mantra-Rock Dance, takes place in San Francisco and features Janis Joplin, Grateful Dead, and Allen Ginsberg.
May 26 » The Beatles' Sgt. Pepper's Lonely Hearts Club Band is released.
May 27 » The U.S. Navy aircraft carrier USSJohn F. Kennedy is launched by Jacqueline Kennedy and her daughter Caroline.
July 12 » Riots begin in Newark, New Jersey.
September 1 » Six-Day War: The Khartoum Resolution is issued at the Arab Summit, and eight countries adopt the "three 'no's against Israel".
December 3 » At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I7337.php : accessed December 23, 2025), "Olga Thesen (1884-1967)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.