Events on April 23 37
Events on this day include: Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik'nal and sacking the city. (599); Dagobert III is crowned King of the Franks. (711); Battle of Clontarf: High King of Ireland Brian Boru defeats Viking invaders, but is killed in battle. (1014).
See the full April 23 overview.
Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik'nal and sacking the city.
Battle of Clontarf: High King of Ireland Brian Boru defeats Viking invaders, but is killed in battle.
The founding of the Order of the Garter by King Edward III is announced on St. George's Day.
The Bayerische Reinheitsgebot (regarding the ingredients of beer) is signed in Ingolstadt.
The first public school in the United States, Boston Latin School, is founded in Boston.
The Siege of Santo Domingo begins during the Anglo-Spanish War, and fails seven days later.
King Charles II of England, Scotland and Ireland is crowned in Westminster Abbey.
The Second Serbian Uprising: A second phase of the national revolution of the Serbs against the Ottoman Empire, erupts shortly after the annexation of the country to the Ottoman Empire.
Fire burns down the second main building and dome of the University of Notre Dame, which prompts the construction of the third, and current, Main Building with its golden dome.
World War I: The British Royal Navy makes a raid in an attempt to neutralise the Belgian port of Bruges-Zeebrugge.
The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
Cardiff City defeat Arsenal in the FA Cup Final, the only time it has been won by a team not based in England.
World War II: The Greek government and King George II evacuate Athens before the invading Wehrmacht.
World War II: Baedeker Blitz - German bombers hit Exeter, Bath and York in retaliation for the British raid on Lübeck.
World War II: Adolf Hitler's designated successor Hermann Göring sends him a telegram asking permission to take leadership of the Third Reich, which causes Hitler to replace him with Joseph Goebbels and Karl Dönitz.
Manuel Roxas is elected the last President of the Commonwealth of the Philippines.
American journalist William N. Oatis is arrested for espionage by the Communist government of Czechoslovakia.
Soviet space program: Soyuz 1 (Russian: Союз 1, Union 1) a manned spaceflight carrying cosmonaut Colonel Vladimir Komarov is launched into orbit.
Vietnam War: Student protesters at Columbia University in New York City take over administration buildings and shut down the university.
Bangladesh Liberation War: The Pakistan Army and Razakars massacre approximately 3,000 Hindu emigrants in the Jathibhanga area of East Pakistan (now Bangladesh).
Coca-Cola changes its formula and releases New Coke. The response is overwhelmingly negative, and the original formula is back on the market in less than three months.
Namibia becomes the 160th member of the United Nations and the 50th member of the Commonwealth of Nations.
Eritreans vote overwhelmingly for independence from Ethiopia in a United Nations-monitored referendum.
Sri Lankan politician Lalith Athulathmudali is assassinated while addressing a gathering, approximately four weeks ahead of the Provincial Council elections for the Western Province.
The first ever YouTube video, titled "Me at the zoo", was published by user "jawed".[1]
At least 28 people are killed and more than 70 are injured as violence breaks out in Hawija, Iraq.
A temple is built on the Capitoline Hill dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasimene.