Interesting facts about September

September is considered by many to be the most pleasant month of the year. What is special about September? Let's find out some interesting facts about September that you may not know!

Like every other month of the year, September has a lot of interesting things in it. Let's learn about the origin of September , the traditions that people around the world celebrate this month, and some other interesting information.

Interesting facts you may not know about September

1. Today, the name September is actually incorrect. It was originally the seventh month in the ancient Roman calendar, and should have been called Septem, meaning "seventh month." It wasn't until 451 BC that January and February were added to the calendar, making September the ninth month.
2. September used to have only 29 days. Thanks to Julius Caesar's reform of the Roman calendar in 46 BC, the month now has an extra day!
3. The Romans often associated different months with different gods. September was associated with Vulcan, the Roman god of fire, possibly because of the scorching heat it experienced as the seventh month of the year.
4. In 1752, the British Empire skipped 11 days of September, between the 2nd and the 14th. This was actually due to another calendar change, although this time it was when the British Empire switched from the Julian to the Gregorian calendar.
5. Back in Anglo-Saxon times, September was known as Gerst Monath, meaning 'barley month', as this was the time of year when barley was harvested, and it was a special time to brew a popular barley beverage.
6. The Anglo-Saxons also had another name for September, Haefest Monath. This is a particularly interesting name because it translates to harvest month, and our modern usage of the word 'harvest' comes from this name!
7. September signals the start of fall in the Northern Hemisphere, officially on the vernal equinox, which usually falls between the 21st and 23rd of each month. In the Southern Hemisphere, of course, it's the other way around, with spring starting on the vernal equinox.
8. September 1, 1939 was a dark day for the world. It was on this day that Hitler invaded Poland, starting World War II.
9. September 11, 2001, changed the face of the world forever. On that fateful day, the worst terrorist attack on American soil occurred when four commercial airplanes were hijacked. Two of them were flown into the World Trade Center Twin Towers, and another crashed into the Pentagon. The fourth plane crashed into a field in Pennsylvania after passengers on board tried to take control of the plane from the terrorists.
10. September starts on the same weekday as another month, December.
11. September 17th is a very important day for the United States, because on this day in 1787, the United States Constitution was adopted. Without the Constitution, the United States today might be a completely different country, with far fewer civil liberties!
12. Although it starts on the same day, this month does not end on the same day of the week as any other month.
13. September has some pretty fun holidays spread throughout the month! First, in the United States, September is National Happy Cat Month! We also have Kids Own the Kitchen Day (United States) on September 13, International Talk Like a Pirate Day on September 19, as well as International Punctuation Day (United States) on September 24. In Vietnam, the month kicks off with Independence Day on September 2.
14. September is graced by two special flowers: the vibrant asters and the beautiful yet resilient morning glory. The meanings of both flowers are actually very similar, asters are said to represent love, while morning glory symbolizes affection.
15. However, September has only one birthstone: the majestic sapphire. With its deep blue hue, this gemstone is said to represent the wisdom of the gods, purity, and faith. Sapphire was once worn to protect its wearer from poison and other evils.

Micah Soto

Update 23 September 2025