12 / 21 History Vault
Discover public domain milestones, art masterworks, and wisdom quotes. (13)
The Creation of Adam
The Creation of Adam is a world-class museum collection item preserved at Sistine Chapel, Vatican.
Michelangelo (Fresco)
Famous Pioneer Born on 12/21
Born under Sagittarius (♐ Sagittarius), possessing unique vision and inspiration.
"We should consider every day lost on which we have not danced at least once."
—— Sagittarius Pioneer
The world's heaviest aircraft, the Antonov An-225 Mriya, made its first flight.
The Antonov An-225 Mriya was a large strategic airlift cargo aircraft designed and produced by the Antonov Design Bureau in the Soviet Union.
Mexico's Popocatépetl volcano, dormant for 47 years, began erupting, and is now one of the nation's most active volcanoes.
Popocatépetl is an active stratovolcano located in the states of Puebla, Morelos, and Mexico in central Mexico. It lies in the eastern half of the Trans-Mexican Volcanic Belt. At 5,393 m (17,694 ft) it is the second highest peak in Mexico, after Citlaltépetl at 5,636 m (18,491 ft). Popocatépetl is ranked 89th by prominence.
In accordance with the Oslo II Accord, Israeli troops withdrew from Bethlehem in preparation for the transfer of control to the Palestinian National Authority.
The Interim Agreement on the West Bank and the Gaza Strip, commonly known as Oslo II or Oslo 2, was a key and complex agreement in the Israeli–Palestinian peace process. Because it was signed in Taba, Egypt, it is sometimes called the Taba Agreement. The Oslo Accords envisioned the establishment of a Palestinian interim self-government in the Palestinian territories. Oslo II created the Areas A, B and C in the West Bank. The Palestinian Authority was given some limited powers and responsibilities in the Areas A and B and a prospect of negotiations on a final settlement based on Security Council Resolutions 242 and 338. The Accord was officially signed on 28 September 1995.
Madelyn_Cline Born
Madelyn Cline is an American actress and model. She is best known for her roles in the Netflix teen drama series Outer Banks (2020–present), in Rian Johnson's mystery film Glass Onion: A Knives Out Mystery (2022), and in the slasher film I Know What You Did Last Summer (2025).
「Madelyn Cline is an American actress and model. She is best known for her roles in th...」
—— Madelyn_Cline
Charlie_McAvoy Born
Charles Patrick McAvoy Jr. is an American professional ice hockey player who is a defenseman and alternate captain for the Boston Bruins of the National Hockey League (NHL). He was selected 14th overall in the 2016 NHL entry draft.
「Charles Patrick McAvoy Jr. is an American professional ice hockey player who is a def...」
—— Charlie_McAvoy
Historical Milestone of 12/21
On this day in history (12/21), significant global milestones and breakthroughs were recorded across science, culture, and human society.
Clara_Tauson Born
Clara Tauson is a Danish professional tennis player. Her career-high rankings are world No. 12 in singles, achieved on 8 September 2025, and No. 56 in doubles, achieved on 23 February 2026. Tauson has won three WTA Tour titles, all on hardcourts.
「Clara Tauson is a Danish professional tennis player. Her career-high rankings are wor...」
—— Clara_Tauson
Cooper_Flagg Born
Cooper Flagg is an American professional basketball player for the Dallas Mavericks of the National Basketball Association (NBA). He was the first overall pick of the 2025 NBA draft, selected by the Mavericks, and became that season's Rookie of the Year.
「Cooper Flagg is an American professional basketball player for the Dallas Mavericks o...」
—— Cooper_Flagg
Countries that were part of the Maya civilization celebrated the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar.
The Maya civilization was a Mesoamerican civilization that existed from antiquity to the early modern period. Known by its ancient temples and glyphs (script), the civilization is also noted for its art, architecture, mathematics, calendar, and astronomical system. The Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas.
Operatives of the British Special Boat Service boarded the container ship Grande Tema in the Thames Estuary to detain four stowaways who had threatened the crew.
The Special Boat Service (SBS) is the special forces unit of the United Kingdom's Royal Navy. The SBS can trace its origins back to the Second World War when the Army Special Boat Section was formed in 1940. After the Second World War, the Royal Navy formed special forces with several name changes—Special Boat Company was adopted in 1951 and re-designated as the Special Boat Squadron in 1974—until on 28 July 1987 when the unit was renamed as the Special Boat Service after assuming responsibility for maritime counter-terrorism. Most of the operations conducted by the SBS are highly classified, and are rarely commented on by the British government or the Ministry of Defence, owing to their sensitive nature.
Fourteen people are killed and 25 others injured during a mass shooting at Charles University in Prague, Czech Republic.
On 21 December 2023, a mass shooting occurred at Charles University's Faculty of Arts main building in central Prague, Czech Republic. A lone gunman, 24-year-old postgraduate student David Kozák, killed 13 people and injured 25 others before committing suicide after exchanging gunfire with police; an additional victim died indirectly from falling to her death while trying to escape the perpetrator.
2023_Prague_shootings
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