What happened on October 15

42 documented historical events happened on October 15, from antiquity to the present day. The best known is this: Ottoman–Habsburg wars: The siege of Vienna ended with Austrian forces repelling the invading Turks, turning the tide against almost a century of conquest in Europe by the Ottoman Empire. On the same day, in another year: Napoleon began his exile on Saint Helena in the South Atlantic Ocean, which would encompass his final six years. On Almanaccolo every event is listed in chronological order, grouped by century, and links to the Wikipedia article it comes from, so you can always read further or check the source. Alongside the events you find who was born and who died on this date, and which observances are celebrated around the world.

160 people with a Wikipedia article were born on October 15, including Agustina Bessa-Luís, Tommy Edwards, Italo Calvino. The list spans every era and every field — art, science, politics, sport, entertainment — ordered by year of birth, from the earliest to the most recent. The six featured people are those most has been written about: the ordering uses the length of their Wikipedia article as an indicator of prominence. For each one you find their occupation, year of birth and a link to the full biography.

98 people with a Wikipedia article died on October 15, including Lucretius, Al-Mu'tamid, Lambert of Italy. The list is in chronological order by year of death and spans all of documented history, from antiquity to the present day. For each person you find their occupation, the year and a link to the Wikipedia biography, where the full story and its sources can be read.

10 observances are celebrated on October 15 around the world: Breast Health Day (Europe), Christian feast day: Bruno of Querfurt, Christian feast day: Cúan of Ahascragh, Christian feast day: Teresa of Ávila, Christian feast day: Thecla of Kitzingen, Christian feast day: October 15 (Eastern Orthodox liturgics). The list gathers national holidays, international days and religious or civil observances falling on this date in different countries, as recorded on Wikipedia. Some are fixed and recur on the same day every year; others depend on the local calendar. Each links to the article explaining its origin and meaning.