September 15
Overview
Holidays & Observances
Battle of Britain Day(United Kingdom)
Battle of Britain Day marks the resilience and bravery of the Royal Air Force during the critical air campaign of World War II.
Christianfeast day:
Joseph Abibos, Alpinus (Albinus) of Lyon, Aprus (Èvre) of Toul, Catherine of Genoa, James Chisholm(Episcopal Church), Saint Dominic in Soriano(formerly), Mamilian of Palermo, Mirin, Nicetas the Goth, Nicomedes, Our Lady of Sorrows, September 15 (Eastern Orthodox liturgics)
A collective feast honoring multiple Christian saints and the Virgin Mary’s sorrows is observed on this day across various Christian traditions.
Cry of Dolores, celebrated on the eve ofIndependence Day (Mexico).
On the eve of Mexico’s Independence Day, communities nationwide reenact the historic 'Cry of Dolores' to honor the call for freedom.
International Day of Democracy
An annual UN-designated day to promote democratic principles and encourage citizen participation worldwide.
The beginning ofGerman American Heritage Month, celebrated until October 15
Marks the start of a month-long celebration of the contributions and cultural heritage of German Americans in the United States.
The beginning ofNational Hispanic Heritage Month, celebrated until October 15 (United States)
Begins the annual celebration honoring the histories, cultures, and contributions of Hispanic and Latino Americans.
World Lymphoma Awareness Day(International)
An international day dedicated to raising awareness about lymphoma, its impact, and the importance of early detection and treatment.
Joseph Abibos
Alpinus (Albinus) of Lyon
Events
Major Fatimid victory over the Byzantine Empire at the Battle of the Orontes.
A decisive 994 victory by the Fatimid Caliphate over the Byzantine Empire at the Battle of the Orontes.
Gilles de Rais, one of the earliest known serial killers, is taken into custody upon an accusation brought against him by Jean de Malestroit, Bishop of Nantes.
In 1440, French nobleman Gilles de Rais was arrested in Nantes, accused of horrific crimes.
Appearance of the miraculous portrait of Saint Dominic in Soriano in Soriano Calabro, Calabria, Italy; commemorated as a feast day by the Roman Catholic Church 1644–1912.
A miraculous portrait of Saint Dominic appeared in Soriano Calabro, sparking devotion and feast celebrations.
Departing from Vlissingen, ex-Holy Roman Emperor Charles V returns to Spain.
In 1556, former Holy Roman Emperor Charles V departed Vlissingen to return to Spain, ending his reign.
Seven Years' War: Battle of Signal Hill.
Battle of Signal Hill, the last action on North American soil during the Seven Years' War.
American Revolutionary War: British forces land at Kip's Bay during the New York Campaign.
British troops landed at Kip's Bay during the 1776 New York Campaign in the American Revolutionary War.
The United States "Department of Foreign Affairs", established by law in July, is renamed the Department of State and given a variety of domestic duties.
The US Department of Foreign Affairs was renamed the Department of State and given domestic duties in 1789.
French Revolutionary Wars: Arthur Wellesley (later Duke of Wellington) sees his first combat at the Battle of Boxtel during the Flanders Campaign.
Arthur Wellesley saw his first combat action at the Battle of Boxtel in 1794 during the French Revolutionary Wars.
Britain seizes the Dutch Cape Colony in southern Africa to prevent its use by the Batavian Republic.
British forces seized the Dutch Cape Colony in southern Africa in 1795 to block French influence.
Births
Saichō
Japanese Buddhist monk who founded the Tendai school on Mount Hiei.
Marco Polo
Venetian merchant whose travels across Asia were recorded in The Travels of Marco Polo, introducing Europeans to the wonders of the East.
Jacopo Salviati
Florentine statesman and nobleman who played a key role in Medici politics during the Italian Renaissance.
Mary of Hungary
Habsburg princess who served as Governor of the Netherlands under her brother, Emperor Charles V.
Catherine of Austria
Archduchess of Austria who became Queen Consort of Poland through her marriage to King Sigismund II Augustus.
Charles Annibal Fabrot
French jurist and scholar renowned for his translations of Roman legal codes.
Giovanni Battista Rinuccini
Italian archbishop and papal nuncio to Ireland during the Confederate Wars.
François de La Rochefoucauld
French nobleman and moralist best known for his concise and witty maxims.
Titus Oates
English clergyman who fabricated the Popish Plot, triggering anti-Catholic hysteria.
Deaths
Ludmila of Bohemia
A Bohemian duchess and Christian martyr, later canonized as a saint.
Adelaide of Hungary
A Hungarian princess who became Duchess of Bohemia and influenced 12th-century Central European politics.
Alan
A Breton nobleman and English soldier who became the first Earl of Richmond and supported Empress Matilda.
Louis I
Louis I 'the Kelheimer' was Duke of Bavaria who strengthened Wittelsbach rule and founded Landshut.
A Prince of Tver who challenged Moscow's rising power and was executed in exile in 1326.
Ewostatewos
An Ethiopian religious reformer who founded the Ewostatewos monastic movement and was later venerated as a saint.
Adam Easton
An English Benedictine scholar and cardinal, noted for his theological writings and role in papal politics.
Edmund Holland
The 4th Earl of Kent, an English noble and politician who served King Henry IV in the early 15th century.
Hugh Clopton
A prominent merchant who served as Lord Mayor of London and was remembered for his civic philanthropy.