What are the important events that happened on April 21? Here are historical events, facts, and some myths about this day.

April 21: Facts & Myths About This Day

April 21 is the 111^th 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.

Under the Julian calendar, this day is April 8, 2025 – a Monday. Both day of the week are the same but did you notice the difference with the Gregorian calendar?

When this day started, 29,086,560 minutes has elapsed since midnight of January 1, 1970 – the Unix epoch.

Strange as it may, if we name this day after a polygon then it will be called ‘hectadecahenagon’ day.

Taurus is the zodiac 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.

The ancient Maya civilization believes that the end of the world will happen on December 21, 2012. There are now 4,504 days since this fabled cataclysmic event.

April 21 Historical Events

• 753 BC –
  Romulus and Remus founded Rome (traditional date).
• 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.
• 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.
• 1960 –
  Founding of the Orthodox Bahá'í Faith in Washington, D.C.
• 1963 –
  The Universal House of Justice of the Bahá'í Faith is elected for the first time.
• 1965 –
  The 1964-1965 New York World’s Fair opens for its second and final season.
• 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.
• 1989 –
  Tiananmen Square Protests of 1989: In Beijing, around 100,000 students gather in Tiananmen Square to commemorate Chinese reform leader Hu Yaobang.
• 2004 –
  Five suicide car bombers target police stations in and around Basra, killing 74 people and wounding 160.

Who were born on April 21?

• 1811 –
  Alson Sherman, American politician (d. 1903)
• 1905 –
  Edmund G. “Pat” Brown, Governor of California (d. 1996)
• 1907 –
  Wade Mainer, American singer and banjoist
• 1911 –
  Ivan Combe, American inventor (d. 2000)
• 1948 –
  Paul Davis, American singer (d. 2008)
• 1951 –
  Michael Hartley Freedman, American mathematician
• 1951 –
  Tony Danza, American actor and comedian
• 1954 –
  Ebiet G. Ade, Indonesian singer
• 1975 –
  Charlie O'Connell, American actor
• 1983 –
  Marco Donadel, Italian footballer

Who died on April 21?

• 1574 –
  Cosimo I de' Medici, Grand Duke of Tuscany (b. 1519)
• 1825 –
  Johann Friedrich Pfaff, German mathematician (b. 1765)
• 1863 –
  Sir Robert Bateson, 1st Baronet, Irish nobility (b. 1782)
• 1924 –
  Eleonora Duse, Italian actress (b. 1858)
• 1965 –
  Sir Edward Victor Appleton, English physicist, Nobel Prize laureate (b. 1892)
• 2003 –
  Nina Simone, American singer and pianist (b. 1933)
• 2004 –
  Mary McGrory, American journalist (b. 1918)
• 2007 –
  Lobby Loyde, Australian guitarist and songwriter (b. 1941)
• 2010 –
  Juan Antonio Samaranch, International Olympic Committee president (b. 1920)
• 2011 –
  Catharina Halkes, Dutch theologian and feminist (b. 1920)