About April 21
April 21, 2025 is the 111th day of the year 2025 in the Gregorian calendar. There are 254 days remaining until the end of this year. The day of the week is Monday.
You can browse the full year calendar in case you need it.
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Taurus is the sun sign of a person born on this day. Diamond is the modern birthstone for this month. Opal is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 302 days remaining before the start of the next Chinese New Year.
What Happened On April 21
- 753 BC –Romulus and Remus founded Rome (traditional date).
- 1509 –Henry VIII ascends the throne of England on the death of his father, Henry VII.
- 1519 –Hernán Cortés lands in Veracruz, Veracruz
- 1809 –Two Austrian army corps are driven from Landshut by a First French Empire army led by Napoleon I of France as two French corps to the north hold off the main Austrian army on the first day of the Battle of Eckmühl.
- 1836 –Texas Revolution: The Battle of San Jacinto – Republic of Texas forces under Sam Houston defeat troops under Mexican General Antonio López de Santa Anna.
- 1894 –Norway formally adopts the Krag-Jørgensen rifle as the main arm of its armed forces, a weapon that would remain in service for almost 50 years.
- 1918 –World War I: German fighter ace Manfred von Richthofen, known as “The Red Baron”, is shot down and killed over Vaux-sur-Somme in France.
- 1922 –The first Aggie Muster is held as a remembrance for fellow Texas A&M graduates who had died in the previous year.
- 1934 –The “Surgeon’s Photograph”, the most famous photo allegedly showing the Loch Ness Monster, is published in the Daily Mail (in 1999, it is revealed to be a hoax).
- 1941 –Emmanouil Tsouderos becomes the 132nd Prime Minister of Greece.
- 1942 –World War II: The most famous (and first international) Aggie Muster is held on the Philippine island of Corregidor, by Brigadier General George F. Moore (with 25 fellow Texas A&M graduates who are under his command), while 1.8 million pounds of shells pounded the island over a 5 hour attack.
- 1945 –World War II: Soviet Union forces south of Berlin at Zossen attack the German High Command headquarters.
- 1960 –Brasília, Brazil’s capital, is officially inaugurated. At 9:30 am the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
- 1964 –A Transit-5bn satellite fails to reach orbit after launch; as it re-enters the atmosphere, 2.1 lb of radioactive plutonium in its SNAP RTG power source is widely dispersed.
- 1966 –Rastafari movement: Haile Selassie of Ethiopia visits Jamaica, an event now celebrated as Grounation Day.
- 1970 –The Hutt River Province Principality secedes from Australia.
- 1982 –Baseball: Rollie Fingers of the Milwaukee Brewers becomes the first pitcher to record 300 saves.
- 1989 –Tiananmen Square Protests of 1989: In Beijing, around 100,000 students gather in Tiananmen Square to commemorate Chinese reform leader Hu Yaobang.
- 1993 –The Supreme Court in La Paz, Bolivia, sentences former dictator Luis Garcia Meza to 30 years in jail without parole for murder, theft, fraud and violating the constitution.
- 1994 –The first discoveries of extrasolar planets are announced by astronomer Alexander Wolszczan.
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