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On this day

April 21 Tuesday, April 21, 2026

A curious almanac of what happened on April 21 across the years — history, birthdays, the songs that ruled the charts, the films that packed cinemas, and the science that nudged the world forward.

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Were you born on April 21?

Find out what the world looked like the day you arrived.

12
Events
7
Birthdays
7
Holidays
April 21, 900: The Laguna Copperplate Inscription (the earliest known written document found in what is now the Philippines): the Commander-in-Chief of the Kingdom of Tondo, as represented by the Honourable Jayadewa, Lord Minister of Pailah, pardons from all debt the Honourable Namwaran and his relations.
900
World history 1126 years ago

The Laguna Copperplate Inscription (the earliest known written document found in what is now the Philippines): the Commander-in-Chief of the Kingdom of Tondo, as represented by the Honourable Jayadewa, Lord Minister of Pailah, pardons from all debt the Honourable Namwaran and his relations.

Jayadewa, Lord Minister of Pailah, grants a debt pardon to Namwaran and his kin on behalf of the Kingdom of Tondo's Commander-in-Chief.

History

What happened on April 21

12 verified entries Full timeline
  1. -753

    Romulus founds Rome (traditional date).

    Romulus establishes Rome, according to legend.

    World history
  2. -43

    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.

    Mark Antony suffers another defeat at the Battle of Mutina, failing to seize Mutina and leading to the death of Aulus Hirtius and Decimus Brutus.

    World history
  3. 900

    The Laguna Copperplate Inscription (the earliest known written document found in what is now the Philippines): the Commander-in-Chief of the Kingdom of Tondo, as represented by the Honourable Jayadewa, Lord Minister of Pailah, pardons from all debt the Honourable Namwaran and his relations.

    Jayadewa, Lord Minister of Pailah, grants a debt pardon to Namwaran and his kin on behalf of the Kingdom of Tondo's Commander-in-Chief.

    World history
  4. 1092

    The Diocese of Pisa is elevated to the rank of metropolitan archdiocese by Pope Urban II.

    Pope Urban II elevates the Diocese of Pisa to a metropolitan archdiocese.

    Religion
  5. 1506

    The three-day Lisbon Massacre comes to an end with the slaughter of over 1,900 suspected Jews by Portuguese Catholics.

    The Lisbon Massacre ends with the killing of more than 1,900 people suspected of being Jewish by Portuguese Catholics.

    European history
  6. 1509

    Henry VIII ascends the throne of England on the death of his father, Henry VII.

    Henry VIII becomes king of England upon his father Henry VII's death.

    UK history
  7. 1615

    The Wignacourt Aqueduct is inaugurated in Malta.

    The Wignacourt Aqueduct is inaugurated in Malta, providing fresh water to the island's inhabitants.

    European history
  8. 1782

    The city of Rattanakosin, now known internationally as Bangkok, is founded on the eastern bank of the Chao Phraya River by King Buddha Yodfa Chulaloke.

    King Buddha Yodfa Chulaloke founds Rattanakosin on the eastern bank of the Chao Phraya River, establishing what is now known internationally as Bangkok.

    World history
  9. 1789

    John Adams sworn in as first US Vice President (nine days before George Washington).

    John Adams is sworn in as the first Vice President of the United States.

    US history
  10. 1806

    Action of 21 April 1806: A French frigate escapes British forces off the coast of South Africa.

    The French frigate Canonnière outmaneuvers a British squadron in the waters off South Africa's Cape of Good Hope.

    War
  11. 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.

    Sam Houston's Texas forces defeat Mexican troops led by General Antonio López de Santa Anna at the Battle of San Jacinto.

    US history
  12. 1958

    United Air Lines Flight 736 collides with a United States Air Force fighter jet near Arden, Nevada in what is now Enterprise, Nevada.

    United Air Lines Flight 736 collides with a U.S. Air Force F-100 Super Sabre over Nevada, killing all 47 passengers and crew aboard the airliner.

    Disaster

Born today

Famous birthdays on April 21

Music

The number one songs on April 21

Across the years Full chart history
Stand and Deliver album cover

🇬🇧 #1 on April 21, 1981

"Stand and Deliver"

by Adam and the Ants

The dandy highwayman spent five weeks at the top — a brash, glam-pop coronation.

#1 for 5 weeks

Also #1 on this day

  • 1965
    "Ticket To Ride"
    — The Beatles
  • 1972
    "Metal Guru"
    — T. Rex
  • 2003
    "Make Luv"
    — Room 5 ft. Oliver Cheatham

Film & TV

At the movies

Box office #1 and premieres All releases
The Empire Strikes Back poster

Box-office #1

The Empire Strikes Back

1980 · dir. Irvin Kershner

Wide US release on May 23, 1980. Goes on to become the highest-grossing film of the year.

Sci-fiStar Wars $538M worldwide
🏆 Sport

April 21, 1982

Baseball: Rollie Fingers of the Milwaukee Brewers becomes the first pitcher to record 300 saves.

Rollie Fingers achieves 300 career saves, becoming the first pitcher in Major League Baseball history to reach this milestone.

Read the story
🔬 Science

April 21, 1995

Java 1.0 is unveiled

Sun Microsystems releases a programming language that will become the backbone of enterprise computing and Android.

Read the story

Today is also

Holidays & observances

7 celebrated today

Natale di Roma (Rome)

International

Natale di Roma is an annual festival held in Rome on April 21 to celebrate the legendary founding of the city

Parilia (ancient Rome)

International

The Parilia or Palilia was an ancient Roman festival of rural character performed annually on 21 April, aimed at cleansing both sheep and shepherd

Civil Service Day (India)

International

In India, the Civil Service is the collection of civil servants of the government who constitute the permanent executive branch of the country

Grounation Day (Rastafari)

International

Grounation Day is the most important Rastafari holiday; it is celebrated in honor of Haile Selassie's 1966 visit to Jamaica

National Tea Day (United Kingdom)

International

National Tea Day is observed in the United Kingdom every year on 21 April to celebrate the drinking of tea

National Tree Planting Day (Kenya)

International

Arbor Day is a secular day of observance in which individuals and groups are encouraged to plant trees

The camera can be the most deadly weapon since the assassin's bullet. Or it can be the lotion of the heart.

Norman Parkinson · born April 21, 1913