Aug
September 2025
Oct
On This Day 4 mins Read

September 17: Facts & Historical Events On This Day

Did you know that on this day, September 17, 1789, the moon of Saturn, "Mimas," was discovered?

Fact Checked Human Written Verified Sources Regularly Updated

September 17th is a special day, as it’s the day we celebrate Professional House Cleaners Day as well as Apple Dumpling Day.

We’ve reached the 260th day of the year. There are 105 days remaining in 2025.

You’re in luck today as we have carefully selected some of the most amazing things that ever happened September 17th in years gone by.

Did you know that on this day, September 17, 1789, the moon of Saturn, “Mimas,” was discovered? The German-British astronomer William Herschel located it using the famous “Forty-foot Telescope” in Slough, England.

Keep reading for more fun & interesting facts about September 17th in history!

Historical Events

What memorable events happened on September 17 in history? Keep reading to find out!

Norway became the first country in the world where electric cars outnumbered petrol cars.

Out of the 2.8 million private vehicles registered in Norway, 753,905 ran on petrol while 754,303 were electric. More impressively, electric cars made up 94.3% of all new cars registered in Norway in August 2024.

During the Senate climate crisis task force, climate change activity Greta Thunberg said, “You’re not trying hard enough. Sorry.”

OTD in 2019: During the Senate climate crisis task force

Thunberg's speech was met with laughter and a round of applause to which the leader of the Senate task force, Ed Markey, vowed: "We hear you. We hear what you're saying, and we will redouble our efforts."

The New York Stock Exchange reopened for trading after the September 11 attacks.

It was the longest the New York Stock Exchange had been closed since the Great Depression.

Linus Torvalds released the first version of the Linux operating system kernel for free on the Internet.

Miss America crowned Vanessa Williams, the first black winner, in New York City.

NASA unveiled its first space shuttle, the Space Shuttle Enterprise.

Unlike later Space Shuttles, Enterprise had no engine or heat shield and was never designed for spaceflight. Instead, it was launched into Earth's atmosphere by a Boeing 747 airplane to perform atmospheric tests.

Conjoined twins were successfully separated for the first time.

OTD in 1953: Conjoined twins were successfully separated for the first time.

The two girls, Carolyn and Catherine, were joined by the spine. They both went on to live full, healthy lives.

Finnish long-distance runner Taisto Mäki broke the 10,000-meter world record in 29:52:06.

Inventor Phillip W Pratt obtained the patent for his sprinkler system designed to extinguish fires.

The fourth great fire of San Francisco happened, destroying a considerable portion of the city.

Within the first year of settlers building up San Francisco, it experienced multiple fires that caused considerable damage. The wooden structures and fierce winds made the fires spread rapidly. Despite the destruction, settlers continued to rebuild, and many fires occurred in the coming years.

German-British astronomer William Herschel discovered the moon of Saturn, “Mimas.”

OTD in 1789: German-British astronomer William Herschel discovered the moon of Saturn

39 out of 50 delegates signed the US Constitution and shared it publicly.

Dutch scientist Antonie van Leeuwenhoek declared his discovery of microorganisms to the Royal Society in London.

Although Leeuwenhoek never made an official publication of his findings, he was the first to discover microorganisms and bacteria's existence.

The Dutch expedition captained by Admiral Van Warwyck first sighted Mauritius.

OTD in 1598: The Dutch expedition captained by Admiral Van Warwyck first sighted Mauritius.

King Charles VI of France suddenly declared that no Jew may live under his rule, following complaints from Christians in France.

Jews could reside under the king's rule if they followed his rules. However, there were many complaints of crimes being committed against Christians. So, from this day on, Charles VI made it law that no Jew could live on his land.

Famous Births

Is today your birthday? If so, did you know that Scott Hoying was also born on this day? Here are more famous people born on this day.

1991

Scott Hoying

American Singer

Age

34 years old

Born IN

Texas, USA

1996

Ella Purnell

English Actress

Age

29 years old

Born IN

England, UK

1948

John Ritter

American Actor

Died On

Sep 11, 2003 (Age 54)

Born IN

California, USA

1962

Baz Luhrmann

Australian Film Director

Age

63 years old

Born IN

New South Wales, Australia

Birthday & Zodiac

People who were born on September 17th share the Virgo zodiac sign.

Virgos are kind, gentle, supportive, and always like to help people. They use their intellect and resourcefulness to solve complex problems.

Anyone born in September has the Sapphire birthstone. Sapphires were once believed to be protection against poison. It was thought that if venomous snakes or spiders were captured in a jar containing the gem, they would immediately die.

Anyone born on Sep 17 would likely have been conceived around Christmas Day in the previous year.

A baby conceived on September 17, 2025, will likely be born around June 10, 2026.

Quotes

Every day brings a new quote - here are the most well-known quotes spoken or written on Sep 17th in history.

2002

“Fool me once, shame on … shame on you. Fool me… You can’t get fooled again!”

George W. Bush

(American Politician)

Special Holidays

If you're looking for something to do today, maybe these special holidays might just help to cure your boredom!

United States

National Apple Dumpling Day

Fall is just around the corner, and apples are suddenly in abundance, which means just one thing - it’s time to start baking with apples! So kick off the harvest season with a classic Apple Dumpling; it’s so simple you can get the kids involved too!

United States

National Professional House Cleaners Day

Cleaners have it tough: not only do they have to do one of the dirtiest jobs around, but they rarely ever get enough praise for their work. Professional house cleaners are no exception, so if you employ one, why not leave them an extra big tip today to thank them for all their hard work!

Fact Of The Day

Days Until

Your countdown to 2025's upcoming special days!

  • Halloween

    44 days

  • Veterans Day

    55 days

  • Thanksgiving

    71 days

  • Christmas Day

    99 days

  • New Year's Day

    106 days

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About The Author

Luke Ward
Owner

Luke Ward is the owner of FactstoryHub. He has over 14 years of experience in researching, informative writing, fact-checking, SEO & web design. In his spare time, he loves to explore the world, drink coffee & attend trivia nights.

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