Strategic Mutual Defence Agreement
Saudi Arabia and Pakistan sign the Strategic Mutual Defence Agreement.
What happened on September 17
34 events · 20 births · 20 deaths · 8 observances. From 1849 to 2025.
Standout on September 17
2018
Israeli Air Force
The Israeli Air Force conducted missile strikes that hit multiple targets in western Syria; Syrian air defences responding to the strikes accidentally downed a Russian plane.
About September 17
September 17 is the 260th day of the year. These facts are computed from the calendar, not copied from anywhere.
- Day of the year
- Day 260 of 365 (261 in leap years)105 days left in the year (105 in leap years)
- Falls on
- Thursday in 2026, Friday in 2027, Sunday in 2028, Monday in 2029, Tuesday in 2030
- Week
- ISO week 38 of 2026 · Q3
- Zodiac sign
- ♍ Virgo (August 23 – September 22)
- Season
- Summer in the north · Winter in the south
- September birthstone
- Sapphirewisdom, loyalty and nobility
- September birth flower
- Aster / Morning glorypatience, wisdom and affection
- Next occurrence
- In 325 days
- Roman numerals
- XVII.IXday.month — see the Roman numeral date tool
Anniversaries in 2026
- 50thSpace Shuttle Enterprise1976
- 30thChoi Young-jae1996
- 30thDuje Ćaleta-Car1996
- 30thEsteban Ocon1996
- 30thSlayyyter1996
- 25thGeorge W. Bush2001
- 25thNew York Stock Exchange2001
- 20thFourpeaked Mountain2006
September 17 through the years
- 10 years ago2016
- 2016 New York and New Jersey bombings · Bahman Golbarnezhad · Sigge Parling
- 25 years ago2001
- New York Stock Exchange · George W. Bush
- 50 years ago1976
- Space Shuttle Enterprise
- 100 years ago1926
- Nothing recorded
- 200 years ago1826
- Nothing recorded
Born on September 17 — ages this year
- 2002Elina Avanesyanturns 24
- 1999Jaimee Fourlisturns 27
- 1999Daniel Huttlestoneturns 27
- 1998Kim Dong-hyun (singer, born 1998)turns 28
- 1997Auston Matthewsturns 29
- 1996Esteban Oconturns 30
Historical events 34
A dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Israeli Air Force
The Israeli Air Force conducted missile strikes that hit multiple targets in western Syria; Syrian air defences responding to the strikes accidentally downed a Russian plane.
Syria missile strikes (September 2018)
A Russian reconnaissance aircraft carrying 15 people on board is brought down by a Syrian surface-to-air missile over the Mediterranean Sea.
2016 New York and New Jersey bombings
Two bombs explode in Seaside Park, New Jersey, and Manhattan. Thirty-one people are injured in the Manhattan bombing.
Grand Theft Auto V
Grand Theft Auto V earns more than half a billion dollars on its first day of release.
Adbusters
Adbusters, a Canadian anti-consumerist publication, organized a protest against corporate influence on democracy at Zuccotti Park in New York City that became known as Occupy Wall Street.
Occupy Wall Street
Occupy Wall Street movement begins in Zuccotti Park, New York City.
Al-Qaeda in Yemen
Seven al-Qaeda fighters attack the embassy of the United States in Sanaa, Yemen, leaving 20 people dead.
Őszöd speech
An audio tape of a private speech by Hungarian Prime Minister Ferenc Gyurcsány is leaked to the public, in which he confessed that his Hungarian Socialist Party had lied to win the 2006 election, sparking widespread protests across the country.
Fourpeaked Mountain
Fourpeaked Mountain in Alaska erupts, marking the first eruption for the volcano in at least 10,000 years.
New York Stock Exchange
The New York Stock Exchange reopens for trading after the September 11 attacks, the longest closure since the Great Depression.
George W. Bush
American president George W. Bush delivered remarks at the Islamic Center of Washington (pictured) condemning Islamophobia in the aftermath of the September 11 attacks.
Mykonos restaurant assassinations
An Iranian Kurdish leader and his two joiners are assassinated by political militants in Berlin.
Linux
The first version of the Linux kernel (0.01) is released to the Internet.
Estonia
Estonia, North Korea, South Korea, Latvia, Lithuania, the Marshall Islands and Micronesia join the United Nations.
HIV/AIDS
Four years after AIDS was first identified in the United States, Ronald Reagan publicly acknowledged AIDS (video featured) for the first time.
Vanessa Williams
Vanessa Williams becomes the first black Miss America.
Gdańsk Shipyard
After weeks of strikes at the Lenin Shipyard in Gdańsk, Poland, the nationwide independent trade union Solidarity is established.
Solidarity (Polish trade union)
Solidarity, a Polish trade union, was founded as the first independent labor union in an Eastern Bloc country.
Anastasio Somoza Debayle
Former Nicaraguan President Anastasio Somoza Debayle is killed in Asunción, Paraguay.
Camp David Accords
The Camp David Accords are signed by Israel and Egypt.
Space Shuttle Enterprise
The Space Shuttle Enterprise is unveiled by NASA.
Bangladesh
Bangladesh, Grenada and Guinea-Bissau join the United Nations.
Amman
The Jordanian army entered Amman as part of operations to oust Palestinian fedayeen from the country in events later known as Black September (smoke over city pictured).
Battle of Chawinda
The Battle of Chawinda is fought between Pakistan and India.
NASA
NASA announced the Next Nine astronauts selected for the purpose of landing on the moon.
Civic Arena (Pittsburgh)
The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
Tintin in Tibet
Tintin in Tibet, the twentieth volume of The Adventures of Tintin by the Belgian cartoonist Hergé and which he regarded as his favourite in the series, began serialisation.
World War II
Second World War: The Royal Navy lost its first warship in the war when German submarine U-29 torpedoed and sank HMS Courageous.
Andrew Fisher
Andrew Fisher, who in his previous term as premier oversaw a period of reform unmatched in the Commonwealth until the 1940s, became Prime Minister of Australia for the third time.
Natal–Zululand border incident
A British surveyor was detained by the Zulu on the border with the Colony of Natal; a demand for reparations for the incident formed part of an ultimatum that led to the Anglo-Zulu War.
American Civil War
American Civil War: Almost 23,000 total casualties were suffered at the Battle of Antietam near Sharpsburg, Maryland, where Confederate and Union troops fought to a tactical stalemate.
San Francisco
Disgruntled with the legal and political structures of the United States, Joshua Norton (pictured) distributed letters to various newspapers in San Francisco proclaiming himself to be Emperor Norton.
Harriet Tubman
Harriet Tubman (pictured) escaped from slavery in the U.S. state of Maryland, and later orchestrated the rescues of other slaves via the Underground Railroad.
Births 20
A notable person born on this day. Each links to a person page with their dates and story.
Deaths 20
A notable person who died on this day.
Roger Climpson
Roger Climpson, English-Australian journalist and television host (born 1932)
Abdelaziz Bouteflika
Abdelaziz Bouteflika, Algerian politician, President of Algeria (born 1937)
Robert W. Gore
Robert W. Gore, American engineer and businessman, co-inventor of Gore-Tex (born 1937)
Peter von Bagh
Peter von Bagh, Finnish historian, director, and screenwriter (born 1943)
George Hamilton IV
George Hamilton IV, American singer-songwriter and guitarist (born 1937)
Holidays & observances 8
A holiday, feast day, awareness day or national day observed every year on this date.
Beatification
Christian feast day: Blessed Cecilia Eusepi
Ariadne of Phrygia
Christian feast day: Ariadne of Phrygia
Australian Citizenship Day
Australian Citizenship Day
Lambert of Maastricht
Christian feast day: Lambert
Hildegard of Bingen
Christian feast day: Hildegard of Bingen
Albert of Vercelli
Christian feast day: Albert of Vercelli
Robert Bellarmine
Christian feast day: Robert Bellarmine
Stanislaus Papczyński
Christian feast day: Stanislaus Papczyński
Spread across the centuries
- 19th century4
- 20th century37
- 21st century33
Earliest: Harriet Tubman (1849). Most recent: Strategic Mutual Defence Agreement (2025).
What the categories mean, and how the standout is chosen
- Historical events
- A dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
- Births
- A notable person born on this day. Each links to a person page with their dates and story.
- Deaths
- A notable person who died on this day.
- Milestones
- A first, a founding or a turning point our editors flagged as a landmark moment.
- Holidays & observances
- A holiday, feast day, awareness day or national day observed every year on this date.
- Standout / notable
- Editor-written entries come first, then entries covered by the most Wikipedia language editions. For the standout tile we prefer an entry that has a picture.
Nearby and related
Questions about September 17
What day of the year is September 17?
September 17 is the 260th day of the year, with 105 days left after it.
What star sign is September 17?
September 17 falls under Virgo (August 23 – September 22), a earth sign ruled by Mercury. The birthstone for the month is Sapphire.
How many things happened on September 17?
We record 82 entries for September 17: 34 events · 20 births · 20 deaths · 8 observances. From 1849 to 2025.
Who was born on September 17?
Elina Avanesyan (2002) is among the notable births on September 17. The births section lists the rest.
How often is the September 17 page updated?
The day is filled the first time anyone opens it and then re-checked for new entries about every 90 days. Computed facts such as the weekday and the anniversaries update every year.
Get a daily entry like September 17
One short email a day from this calendar. Kept for this site only.
Text adapted from Wikipedia under CC BY-SA 4.0 and from Wikidata (CC0). Images come from Wikimedia Commons; credit and licence are shown with each image. Editorial entries are © What's On This Date. Sources & licensing · How this site works.