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Fun facts you’ll want to share! A roundup of October trivia and tidbits

October, when the air clears and the night sky grows beautiful.

This season, also known as Kannazuki, is packed with fun events like Halloween, autumn harvest outings, and sports festivals.

So, how much trivia about October do you know? The reasons October is called Kannazuki, tidbits about Halloween and the season of hearty appetites, and the various commemorative days in October—this article will introduce the deep and fascinating trivia of the month.

How about peeking into a slightly intellectual world of trivia as a companion to your long autumn nights?

Fun facts you’ll want to share! October trivia and tidbits (11–20)

In Kyoto, the Jidai Matsuri is held every year on October 22.

In Kyoto, the Jidai Matsuri is held every year on October 22.

The Jidai Matsuri, which colors Kyoto’s autumn, is a splendid procession held every year on October 22.

It began in 1895 to commemorate the 1,100th anniversary of the transfer of the capital to Heian-kyō and has since been passed down as one of Kyoto’s three major festivals.

The costume parade is arranged to trace history backward—from the Meiji era to Edo, Azuchi-Momoyama, and further to Heian—creating the compelling impression of walking through a living picture scroll.

Thousands of participants don authentic attire and parade through the city, captivating visitors.

It is a rare chance in the modern day to experience the ancient capital’s history and culture all at once, and a delightful piece of trivia you’ll want to share.

Maple leaves begin to change color when the minimum temperature drops below 8°C.

Maple leaves begin to change color when the minimum temperature drops below 8°C.

In autumn, the vivid coloring of maple leaves is a hallmark of Japan, but there are scientific conditions behind its timing.

When the minimum temperature drops below 8°C, photosynthesis in the leaves weakens and chlorophyll breaks down, making red and yellow pigments more noticeable.

In addition, a large difference between daytime and nighttime temperatures intensifies the colors, and many famous viewing spots are in regions where these conditions align.

Knowing that temperature readings play a role changes how you look at autumn foliage, even though it appears to be mere natural beauty.

It’s a fascinating bit of trivia that lets you feel the changing of the seasons.

Halloween became popular in Japan thanks to the Halloween events at Tokyo Disneyland.

Halloween became popular in Japan thanks to the Halloween events at Tokyo Disneyland.

Halloween is now enjoyed throughout Japan, but what really sparked its widespread popularity was a Tokyo Disneyland event.

The Halloween parade held in 1997 was a big hit, helping the culture of wearing costumes take root among the general public.

Until then, Halloween was known mostly within certain foreign communities and in import goods shops, but the large-scale theme park production suddenly made it feel familiar.

The fact that it has become a staple autumn event enjoyed by both children and adults shows the influential role that commercial facilities played.

It’s a bit of trivia that illustrates how entertainment can have a major impact on culture.

We call it ‘autumn, the season of appetite’ because people’s appetites increase in autumn.

We call it 'autumn, the season of appetite' because people's appetites increase in autumn.

It’s called “autumn, the season of appetite” because people tend to get hungrier in the fall.

It’s said that reasons include appetite returning after being suppressed by the summer heat, an increase in basal metabolism to maintain body temperature as it gets colder, and a decrease in serotonin due to shorter daylight hours.

On top of that, a wide variety of delicious seasonal foods are harvested in autumn, which also seems to stimulate the appetite.

Let’s enjoy the many flavors of fall!

Trivia related to “Sports Day,” which falls on the second Monday of October every year

Trivia related to “Sports Day,” which falls on the second Monday of October every year

The second Monday in October is designated as Sports Day, right? Do you know why it’s set on the second Monday of October? The answer is because the Tokyo Olympics were held on October 10, 1964.

By the way, when it was first established, it was called “Health and Sports Day” (Taiiku no Hi), but it was later changed to “Sports Day” through a legal revision.

In fact, Sports Day is also the first national holiday whose name includes an English word.

If you’re curious, try thinking of other holidays as well.