| Holiday name | Holiday location | Holiday type |
|---|---|---|
| St. George's Day | United kingdom | Observance |
| World Book and Copyright Day | - | International |
| English Language Day | - | International |
| German Beer Day | Germany | Observance |
| National Talk Like Shakespeare Day | - | Unofficial (Weird & Obscure) |
| National Picnic Day | - | Unofficial |
| National Take a Chance Day | - | Unofficial (Weird & Obscure) |
| National Cherry Cheesecake Day | - | Unofficial |
| National Lost Dogs Awareness Day | - | Unofficial |
| Last day of Passover | Multiple [Show] | Multiple Types |
| Orthodox Holy Saturday | Multiple [Show] | Multiple Types |
| Last Day of Passover | Multiple [Show] | Multiple Types |
| Language Day | Colombia | Observance |
| Holy Saturday (Orthodox) | Cyprus | Observance, Orthodox |
| Martyrdom of Imam Ali | Iran | National Holiday |
| Matsu's Birthday | Taiwan | Observance |
| National Sovereignty and Children's Day | Turkey | National Holiday |
| Easter Saturday (Orthodox) | Multiple [Show] | Observance, Orthodox |
| Holy Saturday | Bulgaria | National Holiday |
| St George's Feast | Holy see (vatican city) | National Holiday |
| Day of Turks | Kosovo | Observance |
| Day of Aragón | Spain (Aragon) | Local Holiday |
| St George's Day | Spain (Catalonia) | Local Observance |
| Castile and León Day | Spain (Castile-leon) | Local Holiday |
| Shakespeare Day | United kingdom | Observance |
| Coptic Holy Saturday | Egypt | Observance |
| Lover's Day | - | Unofficial |
Historical Events on April 23
- 1635: In Boston, Massachusetts, the very first U.S public school is founded. It’s called Boston Latin School.
- 1655: The Siege of Santo Domingo starts on this day. However, it would end up failing just 7 days later.
- 1660: Poland and Sweden sign the Treaty of Oliva.
- 1661: King Charles II of England is crowned in Westminster Abbey on this day.
- 1914: The first game of baseball is held at Wrigley Field in Chicago, Illinois. At the time, this field is known as Weeghman Park.
- 1918: The British Royal Navy attacks the Belgian port of Bruges-Zeebrugge in an attempt to destroy it.
- 1940: Almost 200 people are killed when a fire breaks out at the Rhythm Club in Natchez, Mississippi.
- 1942: The cities of Exeter, York and Bath are bombed by German bombers during the Baedeker Blitz of World War II. These raids are a direct retaliation for the British attacking Lubeck.
- 1945: Adolf Hitler replaces Hermann Göring with Joseph Goebbels and Karl Donitz when Goring asks Hitler if he could take leadership of the Third Reich.
- 1968: Students take over Columbia University in New York City during a protest and shut it down.
- 1985: Coca-Cola changes its formula and releases New Coke. However, after the initial response is negative, the switch back to the original formula in under 3 months.
- 2005: The very first YouTube video titled “Me at the Zoo” is published by the user named Jawed.
- 2013: Violence breaks out in Hawija, Iraq and results in more than seventy people being injured and almost thirty people killed.
Famous Birthdays on April 23
- American lawyer and 15thS President, James Buchanan is born in 1791.
- Danish physician and Nobel Prize laureate, Johannes Fibiger is born in 1867.
- American actress, singer, dancer and diplomat, Shirley Temple is born in 1928.
- American singer-songwriter Roy Orbison is born in 1936.
- American actor Lee Majors is born in 1939.
- American actress and model, Sandra Dee is born in 1942.
- American director Michael Moore is born in 1954.
- Australian actress Judy Davis is born in 1955.
