Wikipedia:Selected anniversaries/April 25

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This is a list of selected April 25 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.

Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.

To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.

April 24 April 26
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Ineligible

Blurb Reason
Feast day of Mark the Evangelist (Christianity); refimprove section
Flag Day in the Faroe Islands refimprove
; Freedom Day in Portugal (1974) see below
Elbe Day in Russia and the United States (1945) refimprove
1719Robinson Crusoe, a novel by English author Daniel Defoe about a castaway who spends 28 years on a remote tropical island near Venezuela, was first published. refimprove section
1792 – French composer Claude Joseph Rouget de Lisle wrote "La Marseillaise", now the national anthem of France. refimprove sections
1829Swan River Colony Save for May 2
1846Mexican–American War: Mexican forces defeated American troops over the disputed border of Texas, later serving as the primary justification for the U.S. Congress's declaration of war on Mexico. single source
1849 – After Lord Elgin, the Governor General of Canada, signed the Rebellion Losses Bill into law to compensate the residents of Lower Canada for losses incurred in Rebellions of 1837, protestors rioted and burned down the Parliament buildings in Montreal. refimprove section
1864American Civil War: Confederate troops overwhelmed a small Union detachment, leading to Union abandonment of their position in Camden, Arkansas. refimprove section
1898 – The United States retroactively declared war on Spain, stating that a state of war between the two countries had already existed for the past couple of days. unreferenced section
1953 – "Molecular Structure of Nucleic Acids" by molecular biologists James Watson and Francis Crick was first published in the scientific journal Nature, describing the discovery of the double helix structure of DNA. refimprove section
1959 – Linking the North American Great Lakes and the Atlantic Ocean, the St. Lawrence Seaway officially opened to shipping. refimprove section
1974 – The song "Grândola, Vila Morena" by Zeca Afonso was broadcast on radio, signalling the start of the Carnation Revolution, a bloodless coup against the Estado Novo regime in Portugal. refimprove section
1986Mswati III was crowned King of Swaziland, succeeding his father Sobhuza II. refimprove section
2005 – A commuter train came off its tracks in Amagasaki, Hyōgo, Japan, and rammed into an apartment building, killing the driver and 106 passengers and injuring 555 others. refimprove
Anzac Day in Australia and New Zealand (1915); Section tagged for balance
* 1792 – The French highwayman Nicolas Jacques Pelletier became the first person to be executed by guillotine. Date not cited in article

Eligible

April 25: Liberation Day in Italy (1945)

USS Triton (SSRN-586)
USS Triton
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