The temperature on July 18, 1873 was about 23.2 °C. There was 0.1 mm of rain. The air pressure was 9 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 65%. Source: KNMI
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
January 17 » A group of Modoc warriors defeats the United States Army in the First Battle of the Stronghold, part of the Modoc War.
March 10 » The first Azerbaijani play "The Adventures of the Vizier of the Khan of Lenkaran" prepared by Akhundov was performed by Hassan-bey Zardabi and dramatist and Najaf-bey Vezirov.
April 4 » The Kennel Club is founded, the oldest and first official registry of purebred dogs in the world.
May 20 » Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets.
July 21 » At Adair, Iowa, Jesse James and the James–Younger Gang pull off the first successful train robbery in the American Old West.
August 4 » American Indian Wars: While protecting a railroad survey party in Montana, the United States 7th Cavalry, under Lieutenant Colonel George Armstrong Custer clashes for the first time with the Cheyenne and Lakota people near the Tongue River; only one man on each side is killed.
Day of marriage May 4, 1895
The temperature on May 4, 1895 was about 11.5 °C. The airpressure was 77 cm mercury. The atmospheric humidity was 61%. Source: KNMI
January 13 » First Italo-Ethiopian War: the war's opening battle, the Battle of Coatit, occurs; it is an Italian victory.
February 1 » Fountains Valley, Pretoria, the oldest nature reserve in Africa, is proclaimed by President Paul Kruger.
April 17 » The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
October 4 » Horace Rawlins wins the first U.S. Open Men's Golf Championship.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of death March 17, 1950
The temperature on March 17, 1950 was between 8.1 °C and 11.2 °C and averaged 9.7 °C. There was 12.4 mm of rain during 9.1 hours. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
May 9 » Robert Schuman presents his proposal on the creation of an organized Europe, which according to him was indispensable to the maintenance of peaceful relations. This proposal, known as the "Schuman Declaration", is considered by some people to be the beginning of the creation of what is now the European Union.
June 28 » Korean War: Suspected communist sympathizers (between 60,000 to 200,000) are executed in the Bodo League massacre.
August 24 » Edith Sampson becomes the first black U.S. delegate to the United Nations.
September 15 » Korean War: The U.S. X Corps lands at Inchon.
October 19 » Iran becomes the first country to accept technical assistance from the United States under the Point Four Program.
November 1 » Puerto Rican nationalists Griselio Torresola and Oscar Collazo attempt to assassinate US President Harry S. Truman at Blair House.
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/I156808.php : accessed October 18, 2026), "Roelof Hamersma (1873-1950)".
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.