Date·Lore

On This Day · The 264th day of the year

September 21

This year marks the 250th anniversary of New York City — September 21 carries the weight of round numbers. Its center of gravity is the 20th century, and politics and nation-building recur.

♍ZodiacVirgo ◈BirthstoneSapphire ❀Birth flowerAster

Virgo is the sign for September 21 — 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 21?

September 21 is the 264th day of the year. It marks 10 notable events in history, dated between 1170 and 1996. Famous people born on September 21 include Leonard Cohen, Kwame Nkrumah and Jingtai Emperor.

Released on September 21

Movies, games, albums & shows

2023

  • Game Payday 3
  • TV Boundless Love

2022

  • TV Andor

2021

  • Game Kena: Bridge of Spirits
  • TV FBI: International

Release data from TMDB & IGDB.

Events

10 notable moments
  1. 1170

    Anglo-Norman invasion of Ireland

  2. 1776

    New York City

  3. 1780

    American Revolutionary War

  4. 1934

    1934 Muroto typhoon

  5. 1937

    J. R. R. Tolkien

  6. 1938

    1938 New England hurricane

  7. 1964

    Malta

  8. 1971

    Bahrain

  9. 1981

    Belize

  10. 1996

    Defense of Marriage Act

Famous birthday twins

Born on September 21

Leonard Cohen

b. 1934

Kwame Nkrumah

b. 1909

Jingtai Emperor

b. 1428

Paulo Costanzo

b. 1978

Dénes Kőnig

b. 1884

Bill Murray

b. 1950

Barbara Longhi

b. 1552

Stephen King

b. 1947

Deaths

  • 1998Florence Griffith Joyner
  • 1880Manuel Montt
  • 1860Arthur Schopenhauer
  • 1558Charles V, Holy Roman Emperor
  • 1327Edward II
  • -19Virgil

Holidays & observances

  • —Autumnal equinox observances in the Northern Hemisphere, vernal equinox observances in the Southern Hemisphere (see September 22): Spring Day (Argentina)
  • —Christian feast day: Cadoc
  • —Christian feast day: Ephigenia of Ethiopia
  • —Christian feast day: Laurent-Joseph-Marius Imbert (one of the Korean Martyrs)
  • —Christian feast day: Matthew the Evangelist (Western Church)
  • —Christian feast day: Maura of Troyes
  • —Christian feast day: Nativity of the Theotokos (Eastern Orthodox Church, Julian calendar)
  • —Christian feast day: September 21 (Eastern Orthodox liturgics)

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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