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.
  • 900
    The Laguna Copperplate Inscription: the Honourable Namwaran and his children, Lady Angkatan and Bukah, are granted pardon from all their debts by the Commander and Chief of Tundun, as represented by the Honourable Jayadewa, Lord Minister of Pailah. Luzon, Philippines.
  • 1519
    Hernán Cortés lands in Veracruz, Veracruz
  • 1792
    Tiradentes, a revolutionary leading a movement for Brazil’s independence, is hanged, drawn and quartered.
  • 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.
  • 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).
  • 1945
    World War II: Soviet Union forces south of Berlin at Zossen attack the German High Command headquarters.
  • 1952
    Secretary‘s Day (now Administrative Professionals’Day) is first celebrated.
  • 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.
  • 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.
  • 1966
    Rastafari movement: Haile Selassie of Ethiopia visits Jamaica, an event now celebrated as Grounation Day.
  • 1967
    Greek military junta of 1967–1974: A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d'état, establishing a military regime that lasts for seven years.
  • 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.
  • 1982
    Baseball: Rollie Fingers of the Milwaukee Brewers becomes the first pitcher to record 300 saves.
  • 1987
    The Tamil Tigers are blamed for a car bomb that explodes in the Sri Lankan city of Colombo, killing 106 people.
  • 1994
    The first discoveries of extrasolar planets are announced by astronomer Alexander Wolszczan.

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