October 15
Overview
Holidays & Observances
Breast Health Day(Europe)
Breast Health Day is an annual European observance promoting breast health awareness and early detection of breast cancer.
Christianfeast day:
Bruno of Querfurt, Cúanof Ahascragh, Teresa of Ávila, Thecla of Kitzingen, October 15 (Eastern Orthodox liturgics)
A Christian feast day honoring several saints, observed by Western and Eastern Christian traditions on October 15.
National Latino AIDS Awareness Day(United States)
National Latino AIDS Awareness Day is an annual U.S. observance raising HIV/AIDS awareness and promoting testing in Latino communities.
Shwmae Su'mae Day(Wales)
Shwmae Su'mae Day is a Welsh language celebration encouraging simple greetings and raising awareness of the language’s use.
World Students' Day
World Students' Day is an international observance celebrating students and their achievements worldwide, held on A.P.J. Abdul Kalam's birthday.
Bruno of Querfurt
Feast day of Saint Bruno of Querfurt, a medieval missionary bishop and martyr revered for his evangelizing work.
Cúanof Ahascragh
Feast day of Saint Cúan of Ahascragh, an early Irish abbot and missionary known for founding monastic communities.
Teresa of Ávila
Feast day of Saint Teresa of Ávila, a prominent Spanish mystic, author, and reformer of the Carmelite order.
Thecla of Kitzingen
Feast day of Saint Thecla of Kitzingen, an 8th-century abbess and missionary celebrated for spreading Christianity in Germany.
Events
Following the death of Harold II at the Battle of Hastings, Edgar the Ætheling is proclaimed King of England by the Witan; he is never crowned, and concedes power to William the Conqueror two months later.
After Harold II's death at the Battle of Hastings, the Witan proclaimed Edgar the Ætheling king of England, though he was never crowned and ceded power to William the Conqueror two months later.
Battle of the Rhyndacus: The Latin emperor Henry of Flanders defeats the Nicaean emperor Theodore I Laskaris.
At the Battle of the Rhyndacus, Latin Emperor Henry of Flanders secured a victory over Nicaean Emperor Theodore I Laskaris, bolstering the Latin Empire's position in Anatolia.
The Siege of Vienna ends when Austria routs the invading Ottoman forces, ending its European expansion.
The Siege of Vienna ended in a decisive Austrian victory, halting the Ottoman Empire's advance into Central Europe.
Adoption of the Gregorian calendar begins, eventually leading to near-universal adoption.
Pope Gregory XIII introduced the Gregorian calendar to correct the Julian calendar's drift, initiating a system still used worldwide.
Qing forces capture the island of Zhoushan. Zhu Yihai, Prince of Lu, resident of the island and regent of the Southern Ming, flees to Kinmen.
Qing dynasty troops seized Zhoushan Island, forcing Southern Ming regent Prince Zhu Yihai to escape to Kinmen.
The Battle of Raft Swamp marks the last battle fought in North Carolina during the American Revolutionary War with a Patriot victory. It occurred four days before the British surrender at Yorktown.
The Battle of Raft Swamp was the final Revolutionary War engagement in North Carolina, ending in a Patriot victory just days before Yorktown.
The Montgolfier brothers' hot air balloon makes the first human ascent, piloted by Jean-François Pilâtre de Rozier.
Jean-François Pilâtre de Rozier achieved the first human hot air balloon flight, a pioneering milestone in aviation by the Montgolfier brothers.
Queen Marie Antoinette of France is tried and convicted of treason.
Queen Marie Antoinette was tried and convicted of treason by the revolutionary tribunal in Paris, sealing her fate.
Napoleon begins his exile on Saint Helena in the South Atlantic Ocean.
Napoleon Bonaparte commenced his final exile on Saint Helena, ending his dramatic return from Elba and the Hundred Days.
Births
Lucretius
Ancient Roman poet and philosopher of the 1st century BC, known for his epic poem 'De Rerum Natura'.
Virgil
Ancient Roman poet celebrated for his epic 'The Aeneid', a cornerstone of Latin literature.
Temür Khan
Second emperor of the Yuan dynasty (Mongol Empire) who reigned from 1294 to 1307.
Henry III
Landgrave of Upper Hesse، a German noble who governed in the mid-15th century.
Konrad Mutian
German humanist scholar and epigrammatist active during the Northern Renaissance.
Akbar
One of the greatest Mughal emperors who ruled much of the Indian subcontinent from 1556 to 1605.
Richard Field
English clergyman who served as Dean of Gloucester Cathedral in the early 17th century.
Henry Julius
Duke of Brunswick-Lüneburg known for his patronage of the arts and legal reforms in the late 16th century.
Cornelis de Graeff
Influential Dutch statesman and regent who shaped Amsterdam's Golden Age governance.
Deaths
Theophilus
Theophilus was the Patriarch of Alexandria from 385 until his death in 412. He played a significant role in early Christian theological debates.
Al-Mu'tamid
Al-Mu'tamid was the Abbasid caliph who ruled from 870 to 892, noted for his patronage of poets and scholars.
Lambert was King of Italy and co-Emperor of the Carolingian Empire from 891 until his death in 898.
Abdullah ibn Muhammad al-Umawi
Abdullah ibn Muhammad al-Umawi was the Emir of Córdoba from 888 to 912, who strengthened Umayyad rule in Al-Andalus.
Rhazes
Rhazes was a Persian polymath, physician, and alchemist whose works laid the foundations for modern medicine and chemistry.
Abd-al-Rahman III
Abd-al-Rahman III was the Caliph of Córdoba from 929 to 961, overseeing a golden age of political power and cultural achievement in Al-Andalus.
Otto-Henry
Otto-Henry was Duke of Burgundy and Count Palatine of Burgundy from 965 until his death in 1002.
Rudolf of Rheinfelden was Duke of Swabia and anti-king of Germany during the Investiture Controversy from 1077 to 1080.
Petronilla was Queen of Aragon from 1137 to 1164, best known for her dynastic marriage and later retirement to monastic life.