The temperature on July 29, 1877 was about 18.3 °C. The air pressure was 1 kgf/m2 and came mainly from the west-southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 91%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
February 20 » Tchaikovsky's ballet Swan Lake receives its premiere at the Bolshoi Theatre in Moscow.
March 2 » Just two days before inauguration, the U.S. Congress declares Rutherford B. Hayes the winner of the 1876 U.S. presidential election even though Samuel J. Tilden had won the popular vote.
April 24 » Russo-Turkish War: Russian Empire declares war on Ottoman Empire.
May 9 » A magnitude 8.8 earthquake off the coast of Peru kills 2,541, including some as far away as Hawaii and Japan.
July 21 » After rioting by Baltimore and Ohio Railroad workers and the deaths of nine rail workers at the hands of the Maryland militia, workers in Pittsburgh, Pennsylvania, stage a sympathy strike that is met with an assault by the state militia.
December 6 » The first edition of The Washington Post is published.
Day of marriage April 30, 1898
The temperature on April 30, 1898 was about 10.8 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 72%. Source: KNMI
March 16 » In Melbourne the representatives of five colonies adopted a constitution, which would become the basis of the Commonwealth of Australia.
May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
June 17 » The United States Navy Hospital Corps is established.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
August 28 » Caleb Bradham's beverage "Brad's Drink" is renamed "Pepsi-Cola".
September 2 » Battle of Omdurman: British and Egyptian troops defeat Sudanese tribesmen and establish British dominance in Sudan.
Day of death June 26, 1953
The temperature on June 26, 1953 was between 16.6 °C and 23.6 °C and averaged 19.5 °C. There was 9.2 mm of rain during 2.9 hours. There was 2.7 hours of sunshine (16%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
February 28 » James Watson and Francis Crick announce to friends that they have determined the chemical structure of DNA; the formal announcement takes place on April 25 following publication in April's Nature (pub. April 2).
April 25 » Francis Crick and James Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA.
June 19 » Cold War: Julius and Ethel Rosenberg are executed at Sing Sing, in New York.
June 30 » The first Chevrolet Corvette rolls off the assembly line in Flint, Michigan.
August 12 » The 7.2 Ms Ionian earthquake shakes the southern Ionian Islands with a maximum Mercalli intensity of X (Extreme). Between 445 and 800 people are killed.
December 8 » U.S. President Dwight D. Eisenhower delivers his "Atoms for Peace" speech, which leads to an American program to supply equipment and information on nuclear power to schools, hospitals, and research institutions around the world.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I23345.php : accessed February 21, 2026), "Jantje de Graaf (1877-1953)".
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.