Here are 31 newsworthy and notable historical anniversaries in December 2025 (listed six months in advance so you have time to write about them)
Historical anniversaries are great for ‘On This Day in History’ features, articles, biographies and other anniversary tie-ins. They’re popular with newspaper and magazine readers and radio stations, and editors, producers and presenters love them. They’re easy to research too. You can also turn them into movies, documentaries, novels, use them to plan events and exhibitions, and much more. (Find out more at the end of this article.)
We’ve randomly selected an anniversary for each day of the month from The Date-A-Base Book 2025, which lists more than 3,600 anniversaries. The Date-A-Base Book 2026, 2027, 2028, 2029 and 2030 are also available.
Each edition is available in British and U.S. versions. Both have the same content, but with different date formats and spellings. If you click on the links above, you should be directed to the correct version, based on your location. We’ve taken the anniversaries below from the British version.
1 Dec 1825 – 200 years ago
Death of Alexander I, Emperor of Russia (1801–25). (Typhus, aged 47.)
Succeeded by his brother, Nicholas I.
2 Dec 1975 – 50 years ago
The sixteen-year Laotian Civil War ended when the communist political group Pathet Lao seized power, abolished the monarchy, and established the Lao People’s Democratic Republic.
3 Dec 1965 – 60 years ago
The Beatles’ album Rubber Soul was released. They also began their last tour of Britain on this date.
4 Dec 1995 – 30 years ago
The first version of the computer programming language JavaScript was released.
It enabled the development of interactive web pages, and is now used by over 97 percent of websites.
5 Dec 1945 – 80 years ago
Flight 19, a squadron of five U.S. Navy bombers, disappeared over the Bermuda Triangle during a training flight. They were never seen again.
6 Dec 1925 – 100 years ago
The border between Egypt and Libya was formally established when Egypt and Italy signed the Jaghbub treaty, which finalised its position.
7 Dec 1925 – 100 years ago
The Samuel J. Friedman Theatre opened on Broadway, New York City, USA (as the Biltmore Theatre).
8 Dec 1975 – 50 years ago
The world’s first computer retail store, the Byte Shop, opened in Mountain View, California, USA.
It helped popularise the personal computer, and was the first retailer to sell an Apple computer (the Apple I). Founder Paul Terrell’s order for the first fifty units helped fund Apple in its early days and convinced Apple’s co-founder Steve Jobs that there was a market for personal computers.
9 Dec 1965 – 60 years ago
The Kecksburg UFO incident, Pennsylvania, USA
A large, bright fireball was seen from six U.S. states and was reported to have crashed in woods near Pittsburgh. Numerous theories and conspiracy theories have been put forward.
10 Dec 1950 – 75 years ago
Dr Ralph Bunche became the first African American to receive the Nobel Peace Prize, for his efforts to mediate between Israel and nearby Arab states.
11 Dec 2005 – 20 years ago
The Buncefield Oil Depot fire, Hertfordshire, UK.
An oil storage tank exploded when an unconfined vapour cloud ignited, causing nearby tanks to explode. 43 people were injured. The explosion was so loud that it was heard in France, Belgium and the Netherlands.
12 Dec 1925 – 100 years ago
The world’s first motel opened in San Luis Obispo, California, USA.
Originally named the Milestone Mo-Tel, it is now known as the Motel Inn of San Luis Obispo. (It closed down in 1991. Earlier motels dating back to 1915 have been discovered, though they did not use the name motel.
13 Dec 1950 – 75 years ago
American actor James Dean made his first television appearance, in a commercial for Pepsi Cola.
14 Dec 1950 – 75 years ago
The United Nations High Commissioner for Refugees (also known as the UN Refugee Agency) was established.
15 Dec 1965 – 60 years ago
Vietnam War: U.S. Air Force bombers attacked industrial targets in North Vietnam for the first time.
The first attack destroyed the Uong Bi power plant, which supplied power to Haiphong and the capital, Hanoi. Five U.S. planes were shot down during the attack.
16 Dec 1775 – 250 years ago
Birth of Jane Austen, British novelist (Sense and Sensibility, Pride and Prejudice, Mansfield Park, Emma, Northanger Abbey, Persuasion).
17 Dec 1900 – 125 years ago
The Prix Guzman (aka the Pierre Guzman Prize) was announced in France. A prize of 100,000 francs (about $580,000 or £430,000 today) would be awarded to anyone who succeeded in communicating with extra-terrestrials from another celestial body (except Mars, which was considered to be inhabited and therefore too easy). Until someone won the prize, smaller prizes would be awarded every five years to those who made significant progress in astronomy and medicine.
18 Dec 1995 – 30 years ago
Death of Konrad Zuse, German engineer who built the world’s first digital computer, the Z3. (Aged 85.)
19 Dec 2005 – 20 years ago
The Civil Partnership Act came into effect in the UK.
The first civil partnership under the act was formed in Belfast, Northern Ireland that day. The first in Scotland was on 20th December, and the first in England and Wales were on 21st December. (The first civil partnership in the UK was formed on 5th December 2005, before the act came into effect, because one of the partners was terminally ill.)
20 Dec 1955 – 70 years ago
Cardiff was proclaimed the capital city of Wales.
21 Dec 1925 – 100 years ago
The première of Sergei Eisenstein’s silent film Battleship Potemkin, in Moscow, Russia.
Released: Russia: 24th December. USA: 5th December 1926.
22 Dec 1965 – 60 years ago
A maximum speed limit of 70 mph was introduced on previously unrestricted roads in Britain.
The limit was introduced on a trial basis but it was made permanent in July 1967.
23 Dec 1975 – 50 years ago
The Metric Conversion Act was signed into law in the USA.
It declared the metric system to be the preferred system of measurement in business, but permitted the use of customary units of measurement in non-business activities. Participation was voluntary.
24 Dec 1945 – 80 years ago
Birth of Lemmy, British rock/heavy metal singer, songwriter and bassist. A member of the bands Motörhead and Hawkwind. Noted for his distinctive appearance, gravelly voice and overpowered bass guitar sound. (Died 2015, aged 70.)
25 Dec 1950 – 75 years ago
The Stone of Scone, the coronation stone of British monarchs, was taken from Westminster Abbey in London by four Scottish students. They transported it to Scotland, but broke it. It was later returned to London and used in the coronation of Queen Elizabeth II. Since 1996 it has been kept in Edinburgh Castle, Scotland, with the agreement that it will be transported to Westminster Abbey when needed for coronations – including the coronation of King Charles III in 2023.
26 Dec 1975 – 50 years ago
The Soviet Union’s Tupolov Tu-144 supersonic airliner went into service. It was nicknamed ‘Concordski’ because of its similarities to the British-French Concorde. Its passenger service was retired three years later, after two of the planes crashed and the others suffered from reliability problems and rising fuel costs. It remained in service as a cargo plane until 1983, and was then used for research and training until 1999.
27 Dec 2000 – 25 years ago
British pharmaceutical companies Glaxo Wellcome and SmithKline Beecham merged, creating the world’s largest pharmaceutical company, GlaxoSmithKline (GSK).
28 Dec 1945 – 80 years ago
The U.S. Congress formally recognised the Pledge of Allegiance.
It was written in 1892. Before 1945 it was known as the Pledge to the Flag. It was revised in 1954 when the words ‘under God’ were added.
29 Dec 1975 – 50 years ago
The Sex Discrimination Act and the Equal Pay Act came into effect in the UK.
It prevents women from being paid less than their male counterparts when they perform the same roles.
30 Dec 1825 – 200 years ago
The Treaty of St. Louis was proclaimed between the USA and the Shawnee Nation.
Peace and friendship between the two nations was renewed, and the Shawnee ceded land near Cape Girardeau, Missouri to the USA.
31 Dec 1775 – 250 years ago
American Revolutionary War – the Battle of Quebec, Canada.
British victory – the first major defeat for the Americans.
More anniversaries:
You’ll find hundreds more anniversaries for this month in The Date-A-Base Book 2025.
The 2026, 2027, 2028, 2029 and 2030 editions are also available if you work further ahead.
Each edition is available as a PDF ebook (with a free Excel spreadsheet) or as a printed paperback book, in British or U.S. versions.
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How to use the anniversaries:
How can you turn the anniversaries listed here and in The Date-A-Base Books into articles for magazines, newspapers and websites? How do you get paid for writing them, and how can you make a great living from it?
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