What happened on September 27

50 documented historical events happened on September 27, from antiquity to the present day. The best known is this: The Treaty of Melno was signed, establishing the Prussian–Lithuanian border, which afterwards remained unchanged for about 500 years. On the same day, in another year: In a letter to the Académie des Inscriptions et Belles-Lettres in Paris, Jean-François Champollion announced his initial successes in deciphering Egyptian hieroglyphs on the Rosetta Stone (pictured). 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 September 27, including Geoff Bent, Gabriel Loubier, Oliver E. Williamson. 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.

102 people with a Wikipedia article died on September 27, including Pugu Huai'en, William of Wykeham, Felice della Rovere. 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.

13 observances are celebrated on September 27 around the world: Christian feast days: Adheritus, Christian feast days: Bonfilius, Christian feast days: Caius of Milan, Christian feast days: Vincent de Paul, Christian feast days: Cosmas and Damian, Christian feast days: September 27 (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.