The temperature on June 21, 1891 was about 19.1 °C. The air pressure was 7 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 72%. 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.
April 1 » The Wrigley Company is founded in Chicago, Illinois.
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).
July 26 » France annexes Tahiti.
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 June 20, 1918
The temperature on June 20, 1918 was between 7.4 °C and 19.2 °C and averaged 13.8 °C. There was 1.8 mm of rain. There was 5.9 hours of sunshine (35%). 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.
March 21 » World War I: The first phase of the German Spring Offensive, Operation Michael, begins.
May 9 » World War I: Germany repels Britain's second attempt to blockade the port of Ostend, Belgium.
July 4 » Bolsheviks kill Tsar Nicholas II of Russia and his family (Julian calendar date).
July 12 » The Imperial Japanese Navy battleship Kawachi blows up at Shunan, western Honshu, Japan, killing at least 621.
September 29 » The Hindenburg Line is broken by an Allied attack.
November 7 » The 1918 influenza epidemic spreads to Western Samoa, killing 7,542 (about 20% of the population) by the end of the year.
Day of death May 14, 1961
The temperature on May 14, 1961 was between 6.6 °C and 13.7 °C and averaged 9.9 °C. There was 0.1 mm of rain during 0.2 hours. There was 2.1 hours of sunshine (13%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
March 24 » Quebec Board of the French Language is established.
March 30 » The Single Convention on Narcotic Drugs is signed in New York City.
May 19 » Venera program: Venera 1 becomes the first man-made object to fly by another planet by passing Venus (the probe had lost contact with Earth a month earlier and did not send back any data).
June 23 » The Antarctic Treaty System, which sets aside Antarctica as a scientific preserve and limits military activity on the continent, its islands and ice shelves, comes into force.
July 4 » On its maiden voyage, the Soviet nuclear-powered submarine K-19 suffers a complete loss of coolant to its reactor. The crew are able to effect repairs, but 22 of them die of radiation poisoning over the following two years.
August 11 » The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
When copying data from this family tree, please include a reference to the origin: Jan van Ham, "Family tree Hamier", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hamier/I347.php : accessed January 25, 2026), "Johanna van Ham (1891-1961)".
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