Related Posts

Fibonacci Day 2023: Date, History and Mathematical Principles of Fibonacci

Leonardo Pisano Bigollo, better known as Fibonacci, was an Italian mathematician born in the 12th century.

- Advertisement -

Fibonacci Day 2023: In celebration of Fibonacci Day on November 23, we’re taking a look at the life and work of the man who gave us the Fibonacci sequence. Leonardo Pisano Bigollo, better known as Fibonacci, was an Italian mathematician born in the 12th century. He is best known for introducing the Fibonacci sequence, a series of numbers in which each successive number is the sum of the previous two. The Fibonacci sequence has applications in mathematics, art, architecture, nature, and more. On Fibonacci Day, we celebrate the legacy of this great thinker and his contributions to our world.

What is Fibonacci Day?

Fibonacci day is a holiday celebrated on November 23rd. It commemorates the life and work of Leonardo Pisano Bigollo, also known as Fibonacci. Fibonacci was an Italian mathematician who is best known for his Fibonacci sequence. The Fibonacci sequence is a series of numbers in which each number is the sum of the previous two numbers.

- Advertisement -

The most famous instance of the Fibonacci sequence is in the growth of a rabbit population. After one month, a single pair of rabbits can produce offspring. In the second month, the original pair produces another pair, making three pairs total. At the end of the third month, the original pair mates again and produces two more pairs of rabbits, for a total of five pairs. This pattern continues, with each successive month producing an increase in pairs equal to the total number of pairs from all previous months combined. The Fibonacci sequence can be applied to many other situations involving growth or succession, such as in plant reproduction or in spiral formation in shells and galaxies.

Cyber Monday 2023: Date, History, and How Long the Deals last


Year Date Day
2022 November 23 Wednesday
2023 November 23 Thursday
2024 November 23 Saturday
2025 November 23 Sunday
2026 November 23 Monday

The History of Fibonacci

It is celebrated on November 23rd in honor of Italian mathematician Fibonacci’s birthday. He is best known for his Fibonacci sequence, which he introduced in his book Liber Abaci in 1202.

The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding numbers. The first few numbers in the sequence are 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144… and the pattern continues indefinitely.

In mathematics, the Fibonacci numbers are closely related to the Golden Ratio. Throughout history, artists and architects have used the Golden Ratio, a number that frequently appears in nature.

Some interesting facts about Fibonacci:

The Mathematical Principles of Fibonacci

In 1202, an Italian mathematician named Leonardo Fibonacci published a book called Liber Abaci. In it, he introduced the Hindu-Arabic numeral system to the Western world. He also popularized the use of what we now call Fibonacci numbers.

Fibonacci numbers are a sequence of numbers in which each number is the sum of the previous two numbers. The sequence begins with 0 and 1, and then continues as follows: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55…

As you can see, each number in the sequence is simply the sum of the two previous numbers. This pattern continues indefinitely.

Interestingly, this sequence appears all over nature. For example, many animals exhibit what is known as Fibonacci spiraling when they grow or reproduce. This can be seen in everything from shells to pinecones to spiral galaxies!

So why are Fibonacci numbers so special? Well, they have a lot of mathematical properties that make them interesting to scientists and mathematicians alike. For example:

The ratio of consecutive Fibonacci numbers converges to Phi (Φ), which is approximately equal to 1.6180339887… This mysterious number has been studied for centuries and appears all over nature as well!

Every Fibonacci number is either a multiple of 3 or one more than a multiple of 3 (e.g., 3×

The Applications of Fibonacci

The Fibonacci sequence is named after Italian mathematician Leonardo of Pisa, better known as Fibonacci. His 1202 book Liber Abaci introduced the sequence to Western European mathematics, although the sequence had been described earlier in Indian mathematics.

The applications of Fibonacci numbers are numerous in nature and in mathematics. In nature, the Fibonacci sequence appears in the arrangement of leaves on a stem, the uncurling of a fern frond and the arrangement of a pinecone’s scales. The spiral shape of a nautilus shell is also related to the Fibonacci sequence.

In mathematics, Fibonacci numbers are used to calculate the Golden Ratio, which appears frequently in geometry, art and architecture. The Golden Ratio is the ratio of two quantities where the ratio of the sum of those quantities to the larger quantity is equal to the ratio of the larger quantity to the smaller one. The equation (a+b)/a = a/b = (phi) represents this relationship. where φ (phi) is approximately equal to 1.61803…

Pascal’s Triangle, which Chinese mathematician Jia Xian first studied in 1303, also contains Fibonacci numbers. In Pascal’s Triangle, each number is created by adding together the two directly above it.

Celebrating Fibonacci Day

Fibonacci Day is celebrated on November 23rd, which is the birthday of Italian mathematician Fibonacci. Fibonacci is best known for his discovery of the Fibonacci sequence, which is a sequence of numbers where each number is the sum of the previous two numbers. The Fibonacci sequence begins with 0 and 1, and then continues with 1, 2, 3, 5, 8, 13, 21, 34, 55, 89… and so on!

The Fibonacci sequence appears in nature all around us – from the spirals in shells to the arrangement of leaves on a stem. It also appears in art and architecture – you can find it in the Parthenon and in Leonardo da Vinci’s “Golden Rectangle.”

If you’d like to celebrate Fibonacci Day, there are a few things you can do:

-Learn about the Fibonacci sequence and how it appears in nature. You can find some resources here:

-Share your favorite facts about Fibonacci or the Fibonacci sequence with your friends and family.

-Challenge yourself to find examples of the Fibonacci sequence in nature or in works of art.


We hope you enjoyed reading about Fibonacci Day and the interesting history behind it. Even if you’re not a math enthusiast, we hope you can appreciate the beauty of this simple numeric series and how it has captivated mathematicians for centuries. As we countdown to the next Fibonacci Day, let’s take a moment to celebrate the wonder of mathematics and all the fascinating things it has to offer.

Popular Articles

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners. View more
Cookies settings
Privacy & Cookie policy
Privacy & Cookies policy
Cookie name Active
  1. General
  • (1.1.) Eduvast (“Eduvast”, “We”, “Our”, “Us”) is committed to the protection of personal information provided by the users (“You”,“Your”,“User”) to Eduvast. You agree that Your use of Eduvast implies Your consent to the collection, retention and use of Your personal information in accordance with the terms of this Privacy Policy (“Privacy Policy”).
  • (1.2.) We take the privacy of our Users seriously. We are committed to safeguarding the privacy of Users while providing personalized and valuable service.
  • (1.3.) While We do Our best to protect Your information, particularly with respect to the protection of Your personal data, Eduvast cannot ensure the security of Your data transmitted via the internet, telephone or any other networks.
  • (1.4.) Access to the contents available  is conditional upon Your acceptance of this Privacy Policy which should be read together with the End User License Agreement“EULA”.
  • (1.5.) If You do not agree to any of the provisions of this Privacy Policy or EULA, You should not download, install and use the App. We may revise, alter, add, amend or modify this Privacy Policy at any time by updating this privacy policy. By downloading, installing and/or using this App, You agree to be bound by any such alteration, amendment, addition or modification.
2. Information Collected Non Personal Information
  • (2.1.) We may collect non-personal information about You whenever You access or interact with Our Website or any of the related services. This includes but not limited to browser name, version, server location, device specific information such as the type of device used, users’ operating system and version, your mobile devices unique device ID, third party apps or App or service that referred users to App, language preference, means of connection to App, internet service providers, IP address, technical information, google advertising ID (GAID), IDFA, GAID Opt-out Status, location information, interaction of Your device with the App and applications, details of Your device including without limitation its manufacturer details, height and width of your device screen, model, version, UDID or IMEI Number and other similar information about You(collectively "Traffic Data”). Personal Information
  • (2.2.) 2.2. We may collect personal information that identifies You in a variety of ways, including, but not limited to the information submitted during download and installation of the App or in connection with registration for other activities or features offered through the App. Personally identifiable information collected may include name, mailing address, email address, phone number and demographic information such as gender, nationality, postcode and other personal information including but not limited to date, time or place of birth ("Personal Information"). If You communicate with Us by, for example, e-mail or letter, any information provided in such communication may be collected by Eduvast.
  • (2.3.) Our website may transmit your Personal Information to our internal servers. This Personal Information is immediately deleted once you delete the App, except to the extent it is necessary to store the same under applicable laws. Further, we have implemented commercially reasonable physical, managerial, operational and technical security measures to protect the loss, misuse and alteration and to preserve the security of the Personal Information in our care.Finally, this information is used strictly in line with our business purposes.
  • (2.4.) You understand that once You leave Our servers, use of any information You provide shall be governed by the privacy policy of the operator of the site used by You.
3. Disclosure of Personal Information
    • (3.1.) We do not disclose Your Personal Information to any third parties other than as may be required by us, Eduvast’s affiliates, partners, trusted business networks, in compliance with our Privacy Policy for the purpose of moderating the content of the Website, enhancing Your user experience, providing You localised content and to enable Us and Our partners to provide You with targeted information which may be of benefit to you.
    • (3.2.) To enhance customer experience and to provide focused support, we may share generic aggregated demographic information which may include Your information collected by Us but not linked to any personally identifiable information regarding visitors and users with Our business partners, trusted affiliates and advertisers for the purposes outlined above.
    • (3.3.) At times We are required by law or litigation to disclose personal information about the users. We may also disclose information about the user if We determine that disclosure of information is necessary for national security, law enforcement, or other issues of public importance.
    • (3.4.) We use Our best efforts to use information in aggregate form (so that no individual User is identified) for the following purposes:
(3.4.1) To build up marketing profiles; (3.4.2) To aid strategic development, data collection and business analytics; (3.4.3) To manage our relationship with advertisers and partners; (3.4.4) 3.4.4. To audit usage of Our website i.e. (3.4.5) 3.4.5. To enhance user experience in relation to the App and Our website (collectively, “Permitted Use”).
  • (3.5.) We reserve the right to disclose Personal Information if required to do so by law or if we believe that it is necessary to do so to protect and defend the rights, property or personal safety of Eduvast, the App, or Users.
4. Cookies
  • (4.1.) Whenever You access the App We may place "cookies" on Your hard drive for record-keeping purposes to enhance Your experience or sometimes to personalize Your experience. Cookies are small text files that are placed on Your device's hard drive by the App You visit. Cookies help Us to identify information relating Your activities and to retain information relating to Your preferences and history on the App.
  • (4.2.) Ad targeting cookies: We and/or Our service providers may use advertising cookies to deliver ads that are more relevant to You and Your interests.
  • (4.3.) You may choose to disable cookies by turning off cookie feature on the web browser. However, by disabling this feature, some parts of the App may not function properly. This may prevent You from taking full advantage of the App.
5. Confidentiality
    • (5.1.) Except as otherwise provided in this Privacy Policy, We will keep Your Personal Information private and will not share it with third parties, unless We believe in good faith that disclosure of Your Personal Information or any other information We collect about You is necessary for Permitted Use or to:
(5.1.1.) Comply with a court order or other legal process; (5.1.2.) Protect the rights, property or safety of Eduvast or another party; (5.1.3.) Enforce the Agreement, including EULA; or (5.1.4.) Respond to claims that any posting or other content violates the rights of third-parties. 6. Security
  • (6.1.) The security of Your Personal Information is important to Us. We follow generally accepted industry standards to protect the Personal Information submitted to Us, both during transmission and once We receive it.
  • (6.2.) Although We make best possible efforts to store Personal Information in a secure operating environment which is not open to the public, You should understand that there is no such thing as complete security, and We do not guarantee that there will be no unintended disclosures of Your Personal Information. If We become aware that Your Personal Information has been disclosed in a manner not in accordance with this Privacy Policy, We will use reasonable efforts to notify You of the nature and extent of such disclosure (to the extent We know that information) as soon as reasonably possible and as permitted by law.
7. Updates and Changes to Privacy Policy
  • We reserve the right, at any time, to add to, change, update, or modify this Privacy Policy so please review it frequently. In all cases, use of information We collect is subject to the Privacy Policy in effect at the time such information is collected. You hereby acknowledge and agree that it is Your responsibility to review this Privacy Policy periodically and become aware of the modifications. If You disagree to any of the changes to the Privacy Policy, You shall refrain from using or accessing the App. Your continued use of the App following the posting of the revised Policy shall indicate Your acceptance and acknowledgment of the changes and You will be bound by it.
8. Updates and Changes to Your Personal Information
  • You have a right to correct any errors in Your Personal Information available with Us. You may request Us in writing that We cease to use Your Personal Information.
9. Contact Us
  • You may write to us at [email protected] for any privacy concerns and requests relating to this EULA and Privacy Policy.
Save settings
Cookies settings