On this day
Browse notable historical events, births, and deaths by calendar date, including leap day.
January 1
The Euro currency is introduced in 11 member nations of the European Union (with the exception of the United Kingdom, Denmark, Greece and Sweden).
February 14
The online video platform YouTube was founded by Steve Chen, Chad Hurley, and Jawed Karim.
March 17
Golda Meir becomes the first female Prime Minister of Israel.
April 1
Steve Jobs and Steve Wozniak founded Apple Computer, Inc.
May 5
Carnegie Hall in New York City, built by the philanthropist Andrew Carnegie, officially opened with a concert conducted by Pyotr Ilyich Tchaikovsky.
June 6
World War II: Operation Overlord, the largest amphibious military operation in history, began with Allied troops landing on the beaches of Normandy in France.
July 4
The Second Continental Congress adopted the Declaration of Independence in Philadelphia.
August 6
U.S. president Lyndon B. Johnson signed the Voting Rights Act into law, outlawing literacy tests and other discriminatory voting practices that had been responsible for the widespread disfranchisement of African Americans.
September 11
The September 11 attacks, a series of coordinated terrorist attacks killing 2,977 people using four aircraft hijacked by 19 members of al-Qaeda.
October 31
Indian prime minister Indira Gandhi was assassinated by two of her own Sikh bodyguards, sparking riots that killed thousands of Sikhs.
November 11
Germany signed an armistice agreement with the Allies, ending fighting in World War I.
December 25
The first documented Christmas celebration in Rome took place.
The on-this-day archive is a calendar index for notable events, births, and deaths across all 366 possible month-day combinations. It is meant for quick discovery: pick a date, scan the highlighted moments, then follow the cited context on the date page before using an item in a lesson, newsletter, social post, or public display.
Historical summaries are short by design, so source quality matters. A useful entry should identify the event clearly, avoid unsupported superlatives, and leave enough context for a reader to understand why the date is notable. When a date has many possible entries, the page favours a mix of political history, science, culture, sport, births, and deaths rather than repeating the same type of event.
Dates can be complicated by time zones, calendar reforms, disputed records, and events reported on one date in one country and another date elsewhere. Treat this archive as a starting point, not a substitute for primary sources. If an entry will be used for education, publishing, or commemorative material, verify it against a trusted historical source first.