Date·Lore

On This Day · The 263rd day of the year

September 20

From 1260 to 2011, September 20 gathers 751 years of history. Most of the weight falls in the 20th century, where conflict is a recurring thread.

♍ZodiacVirgo ◈BirthstoneSapphire ❀Birth flowerAster

Virgo is the sign for September 20 — read more on the Virgo page, or see September's birthstone & birth flower.

Compiled & reviewed by · Last reviewed September 6, 2026

What happened on September 20?

September 20 is the 263rd day of the year. It marks 10 notable events in history, dated between 1260 and 2011. Famous people born on September 20 include Jennifer Tour Chayes, Ernesto Teodoro Moneta and Sophia Loren.

Released on September 20

Movies, games, albums & shows

2025

  • Movie Disforia

2024

  • Game Parking Garage Rally Circuit
  • Game Frostpunk 2
  • Game Just a To the Moon Series Beach Episode

2023

  • Game Moonstone Island
  • Game Party Animals

Release data from TMDB & IGDB.

Events

10 notable moments
  1. 1260

    Prussian uprisings

  2. 1498

    1498 Meiō earthquake

  3. 1519

    Ferdinand Magellan

  4. 1697

    Peace of Ryswick

  5. 1792

    Battle of Valmy

  6. 1920

    Irish War of Independence

  7. 1971

    Hurricane Irene–Olivia

  8. 1977

    Vietnam

  9. 2008

    Islamabad Marriott Hotel bombing

  10. 2011

    Don't ask, don't tell

Famous birthday twins

Born on September 20

Jennifer Tour Chayes

b. 1956

Ernesto Teodoro Moneta

b. 1833

Sophia Loren

b. 1934

Victor Ponta

b. 1972

Matthias Erzberger

b. 1875

Laura Dekker

b. 1995

Aaron Burkart

b. 1982

Fabian Gottlieb von Bellingshausen

b. 1778

Deaths

  • 2005Simon Wiesenthal
  • 1993Erich Hartmann
  • 1957Jean Sibelius
  • 1863Jacob Grimm
  • 1840José Gaspar Rodríguez de Francia
  • 1241Conrad II of Salzwedel

Holidays & observances

  • —Christian feast day: Agapitus (Western Christianity)
  • —Christian feast day: Eustace (Western Christianity)
  • —Christian feast day: Evilasius
  • —Christian feast day: Fausta of Cyzicus
  • —Christian feast day: Glycerius of Milan
  • —Christian feast day: Jean-Charles Cornay (one of Vietnamese Martyrs)
  • —Christian feast day: John Coleridge Patteson (commemoration, Anglicanism)
  • —Christian feast day: José Maria de Yermo y Parres

The factual record above — event titles, dates, names, and observances — is drawn from Wikipedia under the Creative Commons Attribution-ShareAlike (CC BY-SA) license. DateLore adds curation, structure, and original editorial commentary. DateLore is not affiliated with the Wikimedia Foundation.

About the author

Roman Tailor compiles and reviews every date on DateLore. He's the writer and editor behind the site's editorial essays and the day-by-day almanac. Corrections and questions are welcome — read more about DateLore or get in touch.

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