7 Interesting Facts About October You Probably Didn’t Know
October is one of the most colourful and atmospheric months of the year. Trees turn beautiful shades of yellow, orange and red, evenings become cooler, and spending time at home feels increasingly inviting.
However, October is about much more than autumn colours and cosy evenings. This month has a fascinating history and several surprising connections to nature, sleep and everyday life.
Here are seven interesting facts about October that you might not have known!
1. October was originally the eighth month of the year
The name October comes from the Latin word octo, meaning eight.
In the early Roman calendar, the year began in March, making October the eighth month. Although the calendar eventually changed, the original name remained.
That is why October is still named after the number eight, even though it is now the tenth month of the year.
2. Daylight decreases rapidly during October
In northern countries such as Estonia, the change is particularly noticeable.
At the beginning of October, Tallinn receives approximately 11 hours and 30 minutes of daylight. By the end of the month, this decreases to around nine hours.
Reduced exposure to natural daylight can influence our internal biological clock, sometimes making it more difficult to wake up on dark autumn mornings.
3. Autumn colours are already hiding inside leaves
Surprisingly, many of the yellow and orange pigments we admire in autumn are already present in tree leaves during summer.
They are simply hidden by chlorophyll, the green pigment responsible for photosynthesis.
As autumn arrives and chlorophyll breaks down, these other colours become visible. Red colours in some leaves, however, develop from pigments produced during autumn.
4. Estonia changes to winter time in October
On the last Sunday of October, Estonia moves its clocks back by one hour.
This creates an additional hour on the night of the change, although evenings become darker earlier according to the clock.
While some people enjoy the opportunity for extra sleep, the time change can temporarily affect normal sleeping patterns.
5. October can influence our internal body clock
Shorter days mean less exposure to natural daylight, an important signal for regulating our circadian rhythm.
Light helps control the timing of melatonin production, which plays a role in preparing the body for sleep.
This is why maintaining a consistent sleep schedule, spending time outdoors during daylight and developing a relaxing evening routine can be particularly useful during autumn.
6. October has two traditional birthstones
October is associated with two beautiful gemstones: opal and tourmaline.
Opals are famous for their remarkable play of colours, while tourmalines can appear in many different shades, including pink, green and blue.
Their colourful appearance makes them especially appropriate symbols for this vibrant autumn month.
7. October is a wonderful month for creating a cosy home
As outdoor temperatures decrease and evenings become longer, spending time indoors often becomes more appealing.
A soft bathrobe after a warm shower, comfortable cotton pyjamas, a cup of hot tea and a good book can turn an ordinary autumn evening into a relaxing experience.
Perhaps that is October’s greatest charm: it reminds us to appreciate simple pleasures, from colourful autumn walks to peaceful evenings spent in comfortable clothes at home.



