April 15
Overview
Holidays & Observances
Christianfeast day:
Abbo II of Metz, Father Damien(The Episcopal Church), Hunna, Paternus of Avranches, April 15 (Eastern Orthodox liturgics)
A feast day in Christian traditions honoring saints and holy figures like Abbo II of Metz and Father Damien.
Day of the Sun(North Korea)
North Korea's most important national holiday celebrating the birth of Kim Il-sung.
Father DamienDay (Hawaii)
Hawaii's state holiday honoring Father Damien's compassionate service to leprosy patients on Molokai.
Hillsborough Disaster Memorial(Liverpool, England)
A memorial observance in Liverpool remembering the 96 football fans who perished in the 1989 Hillsborough disaster.
Jackie Robinson Day(United States)
Major League Baseball’s annual celebration of Jackie Robinson breaking the sport’s color barrier in 1947.
NationalAmerican Sign LanguageDay (United States)
A day to recognize and celebrate American Sign Language and the Deaf community in the United States.
Pohela Boishakh(Bengali New Year; India)
Bengali New Year celebration featuring colorful parades, traditional foods, and cultural performances.
Tax Day, the official deadline for filing an individualtax return(or requesting an extension). (United States,Philippines)
The official deadline for filing individual income tax returns in the United States and the Philippines.
Universal Day of Culture
UNESCO's day to promote cultural heritage, diversity, and intercultural dialogue worldwide.
Events
The Lateran Council ends by condemning the Council of Hieria and anathematizing its iconoclastic rulings.
The Lateran Council condemns the iconoclastic rulings of the Council of Hieria, reaffirming the veneration of icons.
Bari, the last Byzantine possession in southern Italy, is surrendered to Robert Guiscard.
Bari, the last Byzantine stronghold in southern Italy, falls to the Norman leader Robert Guiscard.
Battle of Formigny: Toward the end of the Hundred Years' War, the French attack and nearly annihilate English forces, ending English domination in Northern France.
French forces nearly annihilate the English army at the Battle of Formigny, ending English dominance in Northern France.
Battle of Rain: Swedes under Gustavus Adolphus defeat the Holy Roman Empire during the Thirty Years' War.
Swedish forces under Gustavus Adolphus defeat the Holy Roman Empire at the Battle of Rain during the Thirty Years' War.
Irish Confederate Wars: A Confederate Irish militia is routed in the Battle of Kilrush when it attempts to halt the progress of a Royalist Army.
A Confederate Irish militia is routed in the Battle of Kilrush while attempting to stop a Royalist army during the Irish Confederate Wars.
The Pocotaligo Massacre triggers the start of the Yamasee War in colonial South Carolina.
The Pocotaligo Massacre sparks the Yamasee War in colonial South Carolina.
Foundation of the short-lived Kingdom of Corsica.
The short-lived Kingdom of Corsica is founded.
Serse, an Italian opera by George Frideric Handel, receives its premiere performance in London, England.
Handel's Italian opera Serse receives its London premiere.
Samuel Johnson's A Dictionary of the English Language is published in London.
Samuel Johnson's A Dictionary of the English Language is published in London.
Births
Gaius Maecenas
Ancient Roman diplomat and advisor to Emperor Augustus, renowned for his patronage of the arts.
Frederick IV
Medieval Duke of Lorraine who maintained stability and navigated regional conflicts during his reign.
John Paston
Member of the English Paston family whose correspondence offers key insights into 15th-century life.
Leonardo da Vinci
Italian polymath of the Renaissance, celebrated for masterpieces like the Mona Lisa and The Last Supper.
Guru Nanak
Founder of Sikhism and the first Sikh Guru, whose teachings fostered unity and devotion.
Pietro Cataldi
Italian mathematician and astronomer best known for discovering Mersenne primes and mapping stars.
Guru Arjan Dev
Fifth Sikh Guru who compiled the Adi Granth and became the first Sikh martyr.
Claudius Salmasius
French classical scholar renowned for his critical editions of Greek and Latin texts.
Francesco Maria Brancaccio
17th-century Italian cardinal noted for his service to the Catholic Church and ecclesiastical leadership.
Deaths
Suiko
Suiko was the first reigning Empress of Japan, who strengthened central government and embraced Buddhism's influence in the imperial court.
Liu Bin
Liu Bin was the second emperor of the Southern Han kingdom during China's Five Dynasties and Ten Kingdoms period.
Lin Yanyu
Lin Yanyu was a prominent eunuch-official who served in a Chinese royal court during the Five Dynasties and Ten Kingdoms era.
Godwin
Godwin was the powerful Earl of Wessex in 11th-century England and father of King Harold II.
Richard Fitz Gilbert de Clare was a Norman lord, known as Lord of Clare, who played a key role in establishing Norman rule in medieval England.
Adolf of Altena
Adolf of Altena was the Archbishop of Cologne who played a central role in imperial politics during the early 13th century.
Richard Poore
Richard Poore was a medieval English bishop renowned for founding Salisbury Cathedral and reforming church administration.
Manuel Chrysoloras
Manuel Chrysoloras was a Byzantine scholar who pioneered the revival of Greek studies in Renaissance Italy.
Filippo Brunelleschi
Filippo Brunelleschi was a master Italian architect and engineer credited with pioneering Renaissance architecture, including Florence's iconic dome.