The temperature on April 1, 1884 was about 10.9 °C. The air pressure was 2 kgf/m2 and came mainly from the south-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. 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.
February 19 » More than sixty tornadoes strike the Southern United States, one of the largest tornado outbreaks in U.S. history.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 1 » Moses Fleetwood Walker becomes the first black person to play in a professional baseball game in the United States.
May 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
Day of marriage May 18, 1907
The temperature on May 18, 1907 was between 1.8 °C and 10.8 °C and averaged 6.0 °C. There was 4.6 mm of rain. There was 5.0 hours of sunshine (32%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
March 24 » The first issue of the Georgian Bolshevik newspaper Dro is published.
May 23 » The unicameral Parliament of Finland gathers for its first plenary session.
August 9 » The first Boy Scout encampment concludes at Brownsea Island in southern England.
November 16 » Indian Territory and Oklahoma Territory join to form Oklahoma, which is admitted as the 46th U.S. state.
December 11 » The New Zealand Parliament Buildings are almost completely destroyed by fire.
December 21 » The Chilean Army commits a massacre of at least 2,000 striking saltpeter miners in Iquique, Chile.
Day of death May 18, 1969
The temperature on May 18, 1969 was between 5.0 °C and 11.7 °C and averaged 8.1 °C. There was 6.7 mm of rain during 3.2 hours. There was 4.5 hours of sunshine (28%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
May 10 » Vietnam War: The Battle of Dong Ap Bia begins with an assault on Hill 937. It will ultimately become known as Hamburger Hill.
July 24 » Apollo program: Apollo 11 splashes down safely in the Pacific Ocean.
September 1 » A coup in Libya brings Muammar Gaddafi to power.
October 1 » Concorde breaks the sound barrier for the first time.
December 8 » Olympic Airways Flight 954 strikes a mountain outside of Keratea, Greece, killing 90 people in the worst crash of a Douglas DC-6 in history.
December 9 » U.S. Secretary of State William P. Rogers proposes his plan for a ceasefire in the War of Attrition; Egypt and Jordan accept it over the objections of the PLO, which leads to civil war in Jordan in September 1970.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I60218.php : accessed October 17, 2026), "Jantje van der Werf (1884-1969)".
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