The temperature on April 6, 1888 was about 4.5 °C. The air pressure was 9 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 55%. 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.
June 5 » The Rio de la Plata earthquake takes place.
July 15 » The stratovolcano Mount Bandai erupts killing approximately 500 people, in Fukushima Prefecture, Japan.
August 14 » An audio recording of English composer Arthur Sullivan's "The Lost Chord", one of the first recordings of music ever made, is played during a press conference introducing Thomas Edison's phonograph in London, England.
September 22 » The first issue of National Geographic Magazine is published.
October 17 » Thomas Edison files a patent for the Optical Phonograph (the first movie).
Day of marriage April 18, 1915
The temperature on April 18, 1915 was between -0.6 °C and 11.9 °C and averaged 6.1 °C. There was 11.5 hours of sunshine (82%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. 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.
January 12 » The United States House of Representatives rejects a proposal to require states to give women the right to vote.
January 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
March 20 » Albert Einstein publishes his general theory of relativity.
July 16 » At Treasure Island on the Delaware River in the United States, the First Order of the Arrow ceremony takes place and the Order of the Arrow is founded to honor American Boy Scouts who best exemplify the Scout Oath and Law.
August 17 » Jewish American Leo Frank is lynched in Marietta, Georgia after a 13-year-old girl is murdered.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of death June 15, 1977
The temperature on June 15, 1977 was between 13.8 °C and 21.4 °C and averaged 16.4 °C. There was 2.5 mm of rain during 1.7 hours. There was 1.5 hours of sunshine (9%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
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 27 » Tenerife airport disaster: Two Boeing 747 airliners collide on a foggy runway on Tenerife in the Canary Islands, killing 583 (all 248 on KLM and 335 on Pan Am). Sixty-one survived on the Pan Am flight. This is the deadliest aviation accident in history.
April 22 » Optical fiber is first used to carry live telephone traffic.
May 25 » Star Wars (retroactively titled Star Wars: Episode IV – A New Hope) is released in theaters.
August 4 » U.S. President Jimmy Carter signs legislation creating the United States Department of Energy.
August 12 » The Sri Lanka Riots:, targeting the minority Sri Lankan Tamils, begin, less than a month after the United National Party came to power. Over 300 Tamils are killed.
September 10 » Hamida Djandoubi, convicted of torture and murder, is the last person to be executed by guillotine in France.
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/I11488.php : accessed February 1, 2026), "Petronella Leijen (1888-1977)".
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