February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of marriage May 30, 1918
The temperature on May 30, 1918 was between 3.6 °C and 21.0 °C and averaged 13.6 °C. There was 13.2 hours of sunshine (81%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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 23 » First World War: On the third day of the German Spring Offensive, the 10th Battalion of the Royal West Kent Regiment is annihilated with many of the men becoming prisoners of war
June 10 » The Austro-Hungarian battleship SMSSzent István sinks off the Croatian coast after being torpedoed by an Italian MAS motorboat; the event is recorded by camera from a nearby vessel.
August 13 » Women enlist in the United States Marine Corps for the first time. Opha May Johnson is the first woman to enlist.
September 15 » World War I: Allied troops break through the Bulgarian defenses on the Macedonian front.
November 7 » Kurt Eisner overthrows the Wittelsbach dynasty in the Kingdom of Bavaria.
November 21 » The Flag of Estonia, previously used by pro-independence activists, is formally adopted as the national flag of the Republic of Estonia.
Day of death February 10, 1979
The temperature on February 10, 1979 was between -3.2 °C and 1.6 °C and averaged -0.7 °C. There was 3.7 hours of sunshine (39%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 5 » Soviet probes Venera 11, Venera 12 and the German-American solar satellite Helios II all are hit by "off the scale" gamma rays leading to the discovery of soft gamma repeaters.
March 16 » Sino-Vietnamese War: The People's Liberation Army crosses the border back into China, ends the war.
September 20 » A French-supported coup d'état in the Central African Empire overthrows Emperor Bokassa I.
September 29 » The dictator Francisco Macias of Equatorial Guinea is shot by soldiers from Western Sahara.
November 19 » Iran hostage crisis: Iranian leader Ayatollah Ruhollah Khomeini orders the release of 13 female and black American hostages being held at the US Embassy in Tehran.
December 27 » The Soviet Union invades the Democratic Republic of Afghanistan.
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/I501780.php : accessed February 15, 2026), "Grietje Slot (1897-1979)".
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