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).
- 43 BC –Battle of Mutina: Mark Antony is again defeated in battle by Aulus Hirtius, who is killed. Antony fails to capture Mutina and Decimus Brutus is murdered shortly after.
- 1509 –Henry VIII ascends the throne of England on the death of his father, Henry VII.
- 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.
- 1863 –Bahá'u'lláh, the founder of the Bahá'í Faith, declares his mission as “He whom God shall make manifest”.
- 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.
- 1952 –Secretary‘s Day (now Administrative Professionals’Day) is first celebrated.
- 1960 –Founding of the Orthodox Bahá'í Faith in Washington, D.C.
- 1962 –The Seattle World’s Fair (Century 21 Exposition) opens. It is the first World’s Fair in the United States since World War II.
- 1963 –The Universal House of Justice of the Bahá'í Faith is elected for the first time.
- 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.
- 1970 –The Hutt River Province Principality secedes from Australia.
- 1975 –Vietnam War: President of South Vietnam Nguyen Van Thieu flees Saigon, as Xuan Loc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.
- 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.
- 2004 –Five suicide car bombers target police stations in and around Basra, killing 74 people and wounding 160.
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