| Holiday name | Holiday location | Holiday type |
|---|---|---|
| Armed Forces Day | Mozambique | Public Holiday |
| National One-Hit Wonder Day | - | Unofficial (Art & Entertainment, Weird & Obscure) |
| National Comic Book Day | - | Unofficial (Art & Entertainment, Education & Reading) |
| National Lobster Day | - | Unofficial (Food & Drinks) |
| National Tune-Up Day | - | Unofficial (Awareness & Cause) |
| National Research Administrator Day | - | Unofficial (Work & Occupation) |
| Math Storytelling Day | - | Unofficial (Education & Reading) |
| Gold Star Mother's Day | United States | Observance |
| Rosh Hashana Eve | Argentina | Hebrew |
| Demise of Prophet Muhammad and Martyrdom of Imam Hassan | Iran | National Holiday |
| Erev Rosh Hashana | Israel | Observance, Hebrew |
| St. Nicholas of Flüe | Switzerland (Obwalden) | Common Local Holiday |
| Pitru Paksha ends | - | Hindu |
| Mahalaya Amavasya | - | Hindu |
Historical Events on September 25
- 1775: During the American Revolutionary War, Ethan Allen surrenders to the British after trying to capture Montreal during the Battle of Longue-Pointe.
- 1789: 12 amendments are added to the Constitution by the U.S Congress. These included the Bill of Rights, The Congressional Compensation Amendment and the never ratified Congressional Apportionment Amendment.
- 1846: Zachary Taylor leads United States troops to capture the Mexican city of Monterrey.
- 1890: Sequoia National Park is established by the U.S Congress.
- 1912: Columbia University Graduate School of Journalism is created in New York City.
- 1915: The Second Battle of Champagne starts during WWI.
- 1944: Remnants of the British 1st Airborne Division withdraw from Arnhem in the Netherlands. This concludes the Battle of Arnhem and Operation Market Garden.
- 1956: The first transatlantic underwater telephone cable system is inaugurated on this day—it’s called TAT-1.
- 1957: United States Army troops integrate Central High School in Little Rock, Arkansas.
- 1977: Over 4,000 people take part of the first running of the Chicago Marathon on this day.
- 1978: A Boeing 727 (PSA Flight 182) collides with a Cessna 172 and crashes in San Diego, California. Approximately 144 people are killed.
- 1981: Belize joins the U.N.
- 1992: NASA launches the Mars Observer on this day. This $500 million dollar probe is the first United States’ mission to Mars in 17 years. Unfortunately, the probe would fail approximately a year later.
Famous Birthdays on September 25
- American novelist, short story writer and Nobel Prize Laureate William Faulkner is born in 1897.
- French director and screenwriter Robert Bresson is born in 1901.
- French director and screenwriter Jacqueline Audry is born in 1908.
- Alleged American spy Ethel Rosenberg is born in 1915.
- American poet and novelist Aram Saroyan is born in 1943.
- American actor and producer Michael Douglas is born in 1944.
- English actress Felicity Kendal is born in 1946.
- American golfer Gil Morgan is born in 1946.
