October 21st, 2025

Born on October 21st, 2025

Age in days, weeks and months
Wow, over 200 days old!

Why not celebrate an alternative birthday? In 22 days, exactly on August 17th, 2026, people who were born on October 21st, 2025 will be 300 days old!

... in seconds, minutes and hours

What happened on October 21st?

October 21st, 1994

In Seoul, South Korea, 32 people were killed and 17 others injured when a span of the Seongsu Bridge collapsed (pictured).

October 21st, 1978

After reporting contact with an unidentified aircraft, Australian pilot Frederick Valentich disappeared while piloting a Cessna 182L across the Bass Strait to King Island.

October 21st, 1968

At the height of the Japanese university protests, protesters occupied Shinjuku Station in Tokyo and clashed violently with police.

October 21st, 1966

A coal tip fell on the village of Aberfan, Wales, killing 144 people, mostly schoolchildren.

October 21st, 1959

The Solomon R. Guggenheim Museum, designed by American architect Frank Lloyd Wright, opened in New York City.

October 21st, 1944

World War II: The three-week-long Battle of Aachen concluded, making the city the first on German soil to be captured by the Allies.

October 21st, 1941

World War II: German soldiers massacred nearly 2,800 Serbs in Kragujevac in reprisal for insurgent attacks in the district of Gornji Milanovac.

October 21st, 1910

HMS Niobe arrived in Halifax Harbour to become the first large ship of the Royal Canadian Navy.

October 21st, 1867

The first and second of three treaties were signed near Medicine Lodge, Kansas, between the United States federal government and several Native American tribes in the Great Plains, requiring them to relocate to areas in present-day western Oklahoma.

October 21st, 1858

French composer Jacques Offenbach's operetta Orpheus in the Underworld, featuring the music most associated with the can-can (audio featured), was first performed at the Théâtre des Bouffes-Parisiens in Paris.

October 21st, 1854

Florence Nightingale and a staff of 38 nurses and 15 nuns were sent to the Ottoman Empire to help treat wounded British soldiers fighting in the Crimean War.

October 21st, 1345

Hundred Years' War: The English victory at the Battle of Auberoche marked a change in the military balance of power in Aquitaine, with the subsequent collapse of the French position.

October 21st, 1096

First Crusade: At the Battle of Civetot, the Seljuk forces of Kilij Arslan destroyed the army of the People's Crusade as it marched toward Nicaea.

October 21st, 2019

In Canada, the 2019 Canadian federal election ends, resulting in incumbent Prime Minister Justin Trudeau remaining in office, albeit with the Liberal Party in a minority government.

October 21st, 2011

Iraq War: President Barack Obama announces that the withdrawal of United States troops from Iraq will be complete by the end of the year.

Public holidays on October 21st

Fixed holidays (Christian feast day) which are celebrated on October 21st.

Date as a Roman numeral / digit

Born on October 21st, 2025
Future birthdays

Leap year

No: With 365 days 2025 is a normal year and no leap year.

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October 2025