August 21st, 1154

On this page

Born on August 21st, 1154 – Weekday, Age & Zodiac
Age in days, weeks and months
What happened on August 21st?
Birthdays of famous people
Public holidays on August 21st
Date as a Roman numeral / digit
Calendar (August 1154)

Born on August 21st, 1154

Weekday

Saturday

August 21st, 1154 was a Saturday.

Age

869

People born on August 21st, 1154 will turn 870 this year (2024), in exactly 84 days .

Zodiac

♌

Leo (The Lion)

July 23rd, 1154 - August 23rd, 1154

Age in days, weeks and months
Wow, over 317,000 days old!

Why not celebrate an alternative birthday? In 322 days, exactly on April 16th, 2025, people who were born on August 21st, 1154 will be 318,000 days old!

317,678 Days

45,382 Weeks

10,437 Months

... in seconds, minutes and hours

Seconds

Minutes

Hours

What happened on August 21st?

August 21st, 2015

Passengers on a Thalys train from Amsterdam to Paris confronted and subdued an attacker who attempted a mass shooting.

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.

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.

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.

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.

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.

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.

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.

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.

August 21st, 1808

Peninsular War: British–Portuguese forces put an end to the first French invasion of Portugal at the Battle of Vimeiro.

August 21st, 1789

The national colours of Italy first appeared on a tricolour cockade in Genoa.

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.

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.

August 21st, 1689

Jacobite risings: Jacobite clans clashed with a regiment of Covenanters in the streets of Dunkeld, Scotland.

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

Latvian luger

*August 21st, 1990, Sigulda

Malynda Hale

Musical artist

*August 21st, 1986, Santa Barbara

Usain Bolt

Jamaican sprinter

*August 21st, 1986, Sherwood Content

Roelof Dednam

Badminton player

*August 21st, 1985, Bloemfontein

Steve Alten

American writer

*August 21st, 1959, Philadelphia

Geoffrey Keen

English actor (1916–2005)

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

Philip II of France

King of France, and the first to be called by that title

*August 21st, 1165, Paris †July 14th, 1223, Mantes-la-Jolie

Kim Bruun

Badminton player

*August 21st, 1993, Seoul

Stephen Hillenburg

American marine science educator and artist (1961-2018)

*August 21st, 1961, Fort Sill †November 26th, 2018, San Marino

Herry Iman Pierngadi

Badminton coach from Indonesia

*August 21st, 1962, Pangkal Pinang City

Kimberley Ashton

Badminton player

*August 21st, 1987, Jersey

Alizée

French singer

*August 21st, 1984, Ajaccio

Robert Lewandowski

Polish association football player

*August 21st, 1988, Leszno, Warsaw West County

Sergey Brin

American computer scientist and Internet entrepreneur

*August 21st, 1973, Moscow

Hermann Hammerschmidt

*August 21st, 1887, Cottbus †November 30th, 1944

Eve Torres

American actress, dancer, model and professional wrestler

*August 21st, 1984, Boston

Nigel Pearson

English association football player and manager (born 1963)

*August 21st, 1963, Nottingham

Melvin Van Peebles

American filmmaker

*August 21st, 1932, Chicago †September 21st, 2021, Manhattan

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

Mohammed

King of Morocco since 1999

*August 21st, 1963, Rabat

Hayden Panettiere

American actress, model, singer, and activist

*August 21st, 1989, Palisades

Clarence Williams III

American actor (1939–2021)

*August 21st, 1939, New York City †June 4th, 2021, Los Angeles

Frédéric Mitterrand

French writer, director, television host and politician

*August 21st, 1947, 16th arrondissement of Paris †March 21st, 2024

Jack Weston

American actor

*August 21st, 1924, Cleveland †May 3rd, 1996, New York City

Cameron Winklevoss

American rower

*August 21st, 1981, Southampton

Franz Kruckenberg

German engineer (1882-1965)

*August 21st, 1882, Uetersen †June 19th, 1965, Heidelberg

Anthony Boucher

American author, critic, and editor (1911–1968)

*August 21st, 1911, Oakland †April 29th, 1968, Oakland

Wilhelm Ostwald

Baltic German chemist

*August 21st, 1853, Riga †April 4th, 1932, Großbothen

Nanaia Mahuta

New Zealand politician

*August 21st, 1970, Auckland

John L. Hall

American physicist

*August 21st, 1934, Denver

Princess Margaret, Countess of Snowdon

Younger daughter of King George VI and Queen Elizabeth The Queen Mother

*August 21st, 1930, Glamis Castle †February 9th, 2002, King Edward VII's Hospital Sister Agnes

Wilken F. Dincklage

German musician, radio host, music producer, actor and entrepreneur

*August 21st, 1942, Hamburg †October 18th, 1994, Hamburg

Erik Dekker

Dutch cyclist and manager

*August 21st, 1970, Hoogeveen

Kenny Rogers

American country singer and songwriter (1938–2020)

*August 21st, 1938, Houston †March 20th, 2020, Sandy Springs

Patrick Demarchelier

French photographer

*August 21st, 1943, Eaubonne †March 31st, 2022, Saint Barthélemy

Jacques Stern

French cryptographer

*August 21st, 1949, Paris

Romano Battisti

Italian rower

*August 21st, 1986, Priverno

Angelica Aposteanu

Romanian rower

*August 21st, 1954, Bistrița

Madeleine Egle

Austrian luge athlete

*August 21st, 1998, Hall in Tirol

Wilt Chamberlain

American basketball player (1936–1999)

*August 21st, 1936, Philadelphia †October 12th, 1999, Los Angeles

Birthdays of famous people

Public holidays on August 21st

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

Date as a Roman numeral / digit

XXI.VIII.MCLIV

21.8.1154

Legend

M = 1000

C = 100

L = 50

X = 10

V = 5

IV = 4

I = 1

Leap year

No: With 365 days 1154 is a normal year and no leap year.

Calendar
August 1154

August 1154

w#	Mo	Tu	We	Th	Fr	Sa	Su
30							1
31	2	3	4	5	6	7	8
32	9	10	11	12	13	14	15
33	16	17	18	19	20	21	22
34	23	24	25	26	27	28	29
35	30	31

Date of birth

Try another date

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

20. August 1154

July 1154

21. August 1153
21. August 1149
21. August 1144
21. August 1104
21. August 1054

22. August 1154

September 1154

21. August 1155
21. August 1159
21. August 1164
21. August 1204
21. August 1254
21. August 1354

w#	Mo	Tu	We	Th	Fr	Sa	Su
30							1
31	2	3	4	5	6	7	8
32	9	10	11	12	13	14	15
33	16	17	18	19	20	21	22
34	23	24	25	26	27	28	29
35	30	31

w#	Mo	Tu	We	Th	Fr	Sa	Su
30							1
31	2	3	4	5	6	7	8
32	9	10	11	12	13	14	15
33	16	17	18	19	20	21	22
34	23	24	25	26	27	28	29
35	30	31

August 21st, 1154

Born on August 21st, 1154

Weekday

Saturday

Age

Zodiac

♌

Leo (The Lion)

Age in days, weeks and months Wow, over 317,000 days old!

317,678 Days

45,382 Weeks

10,437 Months

... in seconds, minutes and hours

Seconds

Minutes

Hours

What happened on August 21st?

Passengers on a Thalys train from Amsterdam to Paris confronted and subdued an attacker who attempted a mass shooting.

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.

A limnic eruption of Lake Nyos in Cameroon released a cloud of carbon dioxide, suffocating 1,746 people and 3,500 livestock.

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.

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: A combined Canadian–Polish force captured the town of Falaise, France, in the final offensive of the Battle of Normandy.

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's Mona Lisa (pictured) was stolen from the Louvre by museum employee Vincenzo Peruggia and was not recovered until two years later.

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: British–Portuguese forces put an end to the first French invasion of Portugal at the Battle of Vimeiro.

The national colours of Italy first appeared on a tricolour cockade in Genoa.

Austro-Turkish War: Austrian troops under the command of Prince Eugene of Savoy captured the strategically important city of Belgrade from the Ottoman Empire.

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.

Jacobite risings: Jacobite clans clashed with a regiment of Covenanters in the streets of Dunkeld, Scotland.

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?

Birthdays of famous people

Public holidays on August 21st

Abraham of Smolensk (Eastern Orthodox Church)

Euprepius of Verona

Maximilian of Antioch

Our Lady of Knock

Pope Pius X

Sidonius Apollinaris

August 21 (Eastern Orthodox liturgics)

Ninoy Aquino Day (Philippines)

Youth Day (Morocco)

World Senior Citizen's Day

Date as a Roman numeral / digit

21.8.1154

Legend

Leap year

Calendar August 1154

August 1154

Date of birth

Try another date

Try another date

Age in days, weeks and months
Wow, over 317,000 days old!

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

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

Calendar
August 1154

w#	Mo	Tu	We	Th	Fr	Sa	Su
30							1
31	2	3	4	5	6	7	8
32	9	10	11	12	13	14	15
33	16	17	18	19	20	21	22
34	23	24	25	26	27	28	29
35	30	31