1423 August 1423 August 21st, 1423

On this page
  1. Born on August 21st, 1423 – Weekday, Age & Zodiac
  2. Age in days, weeks and months
  3. What happened on August 21st?
  4. Birthdays of famous people
  5. Public holidays on August 21st
  6. Date as a Roman numeral / digit
  7. Calendar (August 1423)

Born on August 21st, 1423

Weekday

Thursday

August 21st, 1423 was a Thursday.

Age

600

People born on August 21st, 1423 will turn 601 this year (2024), in exactly 51 days .

Zodiac

♌

Leo (The Lion)

July 23rd, 1423 - August 23rd, 1423

Age in days, weeks and months
Wow, over 219,000 days old!

Why not celebrate an alternative birthday? In 539 days, exactly on December 22nd, 2025, people who were born on August 21st, 1423 will be 220,000 days old!

219,461 Days

31,351 Weeks

7,210 Months

... in seconds, minutes and hours

Seconds
Minutes
Hours

What happened on August 21st?

Thalys August 21st, 2015

Passengers on a Thalys train from Amsterdam to Paris confronted and subdued an attacker who attempted a mass shooting.
Syrian civil war August 21st, 2013

Syrian civil war: Areas controlled by the Syrian opposition in Ghouta, Damascus, were attacked by rockets (launcher pictured) containing sarin, killing at least 281 people.
Limnic eruption August 21st, 1986

A limnic eruption of Lake Nyos in Cameroon released a cloud of carbon dioxide, suffocating 1,746 people and 3,500 livestock.
Army of the Republic of Vietnam Special Forces August 21st, 1963

South Vietnamese special forces loyal to Ngô Đình Nhu, the brother of President Ngô Đình Diệm, raided and vandalised Buddhist pagodas across the country, arresting thousands and leaving hundreds dead.
Harry Daghlian August 21st, 1945

American physicist Harry Daghlian accidentally dropped a tungsten carbide brick onto a plutonium bomb core, exposing himself to neutron radiation and later becoming the first Manhattan Project fatality due to a criticality accident.
World War II August 21st, 1944

World War II: A combined Canadian–Polish force captured the town of Falaise, France, in the final offensive of the Battle of Normandy.
World War II August 21st, 1942

World War II: The Imperial Japanese Army lost the Battle of the Tenaru, the first of its three major land offensives during the Guadalcanal Campaign.
Leonardo da Vinci August 21st, 1911

Leonardo da Vinci's Mona Lisa (pictured) was stolen from the Louvre by museum employee Vincenzo Peruggia and was not recovered until two years later.
Lincoln–Douglas debates August 21st, 1858

The first of seven debates between Abraham Lincoln and Stephen A. Douglas (both pictured), candidates for an Illinois seat in the U.S. Senate, was held in Ottawa, Illinois.
Peninsular War August 21st, 1808

Peninsular War: British–Portuguese forces put an end to the first French invasion of Portugal at the Battle of Vimeiro.
National colours of Italy August 21st, 1789

The national colours of Italy first appeared on a tricolour cockade in Genoa.
Austro-Turkish War (1716–1718) August 21st, 1717

Austro-Turkish War: Austrian troops under the command of Prince Eugene of Savoy captured the strategically important city of Belgrade from the Ottoman Empire.
Ottoman–Venetian War (1714–1718) August 21st, 1716

Seventh Ottoman–Venetian War: Ottoman forces suddenly abandoned their siege of Corfu, allowing the Republic of Venice to preserve its rule over the Ionian Islands.
Jacobitism August 21st, 1689

Jacobite risings: Jacobite clans clashed with a regiment of Covenanters in the streets of Dunkeld, Scotland.
Battle of Dunkeld August 21st, 1689

The Battle of Dunkeld in Scotland.

Birthdays
... of famous people, actors, celebrities and stars on August 21st

Same Day
Who's birthday is on August 21st?

Elīza Tīruma: Age & Birthday 33
Elīza Tīruma

Latvian luger

*August 21st, 1990, Sigulda
Malynda Hale: Age & Birthday 37
Malynda Hale

Musical artist

*August 21st, 1986, Santa Barbara
Usain Bolt: Age & Birthday 37
Usain Bolt

Jamaican sprinter

*August 21st, 1986, Sherwood Content
38
Roelof Dednam

Badminton player

*August 21st, 1985, Bloemfontein
89
Geoffrey Keen

English actor (1916–2005)

*August 21st, 1916, Wallingford †November 3rd, 2005, Northwood
64
Steve Alten

American writer

*August 21st, 1959, Philadelphia
30
Kim Bruun

Badminton player

*August 21st, 1993, Seoul
Stephen Hillenburg: Age & Birthday 57
Stephen Hillenburg

American marine science educator and artist (1961-2018)

*August 21st, 1961, Fort Sill †November 26th, 2018, San Marino
61
Herry Iman Pierngadi

Badminton coach from Indonesia

*August 21st, 1962, Pangkal Pinang
36
Kimberley Ashton

Badminton player

*August 21st, 1987, Jersey
Alizée: Age & Birthday 39
Alizée

French singer (born 1984)

*August 21st, 1984, Ajaccio
Robert Lewandowski: Age & Birthday 35
Robert Lewandowski

Polish association football player

*August 21st, 1988, Leszno, Warsaw West County
57
Hermann Hammerschmidt
*August 21st, 1887, Cottbus †November 30th, 1944
Sergey Brin: Age & Birthday 50
Sergey Brin

American billionaire businessman (born 1973)

*August 21st, 1973, Moscow
Eve Torres: Age & Birthday 39
Eve Torres

American actress, dancer, model and professional wrestler

*August 21st, 1984, Boston
William IV: Age & Birthday 71
William IV

King of the United Kingdom of Great Britain and Ireland and of Hanover from 1830 to 1837

*August 21st, 1765, Buckingham Palace †June 20th, 1837, Windsor Castle
Nigel Pearson: Age & Birthday 60
Nigel Pearson

English association football player and manager (born 1963)

*August 21st, 1963, Nottingham
Melvin Van Peebles: Age & Birthday 89
Melvin Van Peebles

American filmmaker

*August 21st, 1932, Chicago †September 21st, 2021, Manhattan
Clarence Williams III: Age & Birthday 81
Clarence Williams III

American actor (1939–2021)

*August 21st, 1939, New York City †June 4th, 2021, Los Angeles
Hayden Panettiere: Age & Birthday 34
Hayden Panettiere

American actress, model, singer, and activist

*August 21st, 1989, Palisades

Same year
Born in 1423

60
Louis XI of France

King of France from 1461 to 1483

*July 3rd, 1423, Bourges †August 30th, 1483, Château de Plessis-lez-Tours
Antonio Manetti: Age & Birthday 73
Antonio Manetti

Italian humanist, architect and mathematician

*July 6th, 1423, Florence †May 26th, 1497, Florence
Thomas Rotherham: Age & Birthday 76
Thomas Rotherham

Lord Privy Seal; Lord Chancellor; Bishop of Rochester; Bishop of Lincoln; Archbishop of York

*August 24th, 1423, Rotherham †May 29th, 1500, Cawood Castle
70
Ferdinand I of Naples

King of Naples

*June 2nd, 1423, Valencia †January 28th, 1494, Kingdom of Naples
37
Georg von Peuerbach

Austrian mathematician and astronomer (1423-1461)

*May 30th, 1423, Peuerbach †April 8th, 1461, Vienna
49
Gaston IV of Foix

Count of Foix

*February 26th, 1423, Petegem-aan-de-Schelde †July 10th, 1472, Orreaga-Roncesvalles
49
John II of Nassau-Saarbrücken

Count of Saarbrücken (1442-1472)

*April 4th, 1423, Kirchheimbolanden †July 25th, 1472, Vaihingen an der Enz
1
Infanta Leonor of Castile

Princess of Asturias

*September 10th, 1423, Valladolid †August 22nd, 1425, Castromonte
84
Endres Tucher

German builder (1423-1507)

*April 5th, 1423, Nuremberg †April 14th, 1507

Birthdays of famous people

MS Dhoni: Age & BirthdayVince Clarke: Age & BirthdayMathias Boe: Age & BirthdaySony Dwi Kuncoro: Age & BirthdayIvan Sozonov: Age & BirthdayJim Kerr: Age & BirthdayRuben Jille: Age & BirthdayKhosit Phetpradab: Age & BirthdayViola Desmond: Age & BirthdayFelipe Araújo: Age & Birthday

Public holidays on August 21st

Fixed holidays (Christian Feast Day) which are celebrated on August 21st.

Abraham of Smolensk (Eastern Orthodox Church)
Christian Feast Dayen.wikipedia.org/wiki/Abraham_of_Smolensk
Euprepius of Verona
Christian Feast Dayen.wikipedia.org/wiki/Euprepius_of_Verona
Maximilian of Antioch
Christian Feast Dayen.wikipedia.org/wiki/Maximilian_of_Antioch
Our Lady of Knock
Christian Feast Dayen.wikipedia.org/wiki/Knock_Shrine
Pope Pius X
Christian Feast Dayen.wikipedia.org/wiki/Pope_Pius_X
Sidonius Apollinaris
Christian Feast Dayen.wikipedia.org/wiki/Sidonius_Apollinaris
August 21 (Eastern Orthodox liturgics)
Christian Feast Dayen.wikipedia.org/wiki/August_21_(Eastern_Orthodox_liturgics)
Ninoy Aquino Day (Philippines)
en.wikipedia.org/wiki/Ninoy_Aquino_Day
Youth Day (Morocco)
en.wikipedia.org/wiki/Youth_Day
World Senior Citizen's Day
en.wikipedia.org/wiki/World_Senior_Citizen's_Day

Date as a Roman numeral / digit

XXI.VIII.MCDXXIII

21.8.1423

Legend

M = 1000CD = 400X = 10V = 5I = 1

Leap year

No: With 365 days 1423 is a normal year and no leap year.

Calendar
August 1423

August 1423

w# Mo Tu We Th Fr Sa Su
31 123
32 45678910
33 11121314151617
34 18192021222324
35 25262728293031

Date of birth

Try another date

Your birthday is more than just a day in the calendar!

20. August 1423
July 1423

22. August 1423
September 1423