August 4th, 1421

Born on August 4th, 1421

Age in days, weeks and months
Wow, over 220,000 days old!

Why not celebrate an alternative birthday? In 70 days, exactly on September 1st, 2026, people who were born on August 4th, 1421 will be 221,000 days old!

... in seconds, minutes and hours

What happened on August 4th?

August 4th, 2020

A large explosion of ammonium nitrate stored at the Port of Beirut in Lebanon killed 218 people and caused US$15 billion in damage.

August 4th, 2006

Sri Lankan civil war: Seventeen employees of the French nongovernmental organization ACF International were massacred in Mutur.

August 4th, 1997

French supercentenarian Jeanne Calment died at the age of 122 years, 164 days, with the longest confirmed human lifespan in history.

August 4th, 1995

Yugoslav Wars: The Croatian Army initiated Operation Storm, the last major battle of the Croatian War of Independence and the largest European land battle since the Second World War.

August 4th, 1993

Yōhei Kōno, Chief Cabinet Secretary of Japan, issued a formal apology for forcing women into sexual slavery during World War II.

August 4th, 1991

An explosion on the Greek cruise ship MTS Oceanos (pictured) ruptured its hull, causing it to sink off the east coast of South Africa, with all 571 people on board rescued.

August 4th, 1983

Jean-Baptiste Ouédraogo, the president of Upper Volta, was ousted in a coup d'état led by Thomas Sankara.

August 4th, 1972

President Idi Amin announced the expulsion of Asians from Uganda.

August 4th, 1964

Vietnam War: The National Security Agency falsely claimed that a U.S. Navy destroyer was attacked a second time by North Vietnamese vessels in the Gulf of Tonkin, leading Congress to authorize the use of military force.

August 4th, 1914

World War I: Adhering to the terms of the Treaty of London, the United Kingdom declared war on Germany in response to the latter's invasion of Belgium.

August 4th, 1892

Lizzie Borden's father and stepmother were found murdered in their home in Fall River, Massachusetts; Borden was later tried and acquitted for the murders.

August 4th, 1830

American surveyor James Thompson produced the first plat of Chicago for the Illinois and Michigan Canal Commissioners.

August 4th, 1796

French Revolutionary Wars: Commanded by Napoleon Bonaparte (depicted), the French Army of Italy decisively defeated Austrian forces led by Peter Vitus von Quosdanovich at the Battle of Lonato.

August 4th, 1791

The signing of the Treaty of Sistova brought an end to the Austro-Turkish War.

August 4th, 1783

Mount Asama (pictured) in Japan began a climactic eruption, which exacerbated the Great Tenmei famine and led to thousands of deaths.

Public holidays on August 4th

Fixed holidays (Christian feast day) which are celebrated on August 4th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1421 is a normal year and no leap year.

Calendar
August 1421