When Is National Fibonacci Day?

The internet history of Fibonacci Day

20th of November is National Fibonacci Day

  First detected on the 16th of November 2019

  140 tweets


Is It Fibonacci Day Today?

It's Fibonacci day on the 20th of November.

The most recent detection of references to Fibonacci Day was 2 months, 3 weeks ago.

There were many celebrations relating to national holdiays written about on social media that our algorithms picked up on the 20th of November. In total we detected 73 total unique days being shared such as Child Day which had 454 people talking about it, or Absurdity Day having 191 tweets.


How Is The Date For Fibonacci Day Calculated?

The day shown for 'National Fibonacci Day' is based off how much chitter-chatter and buzz there was on Nov. 20, 2019 across social media making references to 'Fibonacci Day'. Our algorithms examine all of the references to National Days across social media and updates whatnationaldayisit.com hourly, with our homepage displaying the current national day, including others such as: Education Support Professionals, Agriculture or Peanut Butter Fudge Day. This crowdsourcing of data method to assess the National Fibonacci Day date is used as opposed to being connected with any Government sacntioned lists :D Hurrah for democracy by concensus!


I'd Like To Promote National Fibonacci Day

We've put together the following resources full of nifty tips on how to increase the reach of Fibonacci Day. The resources include: graphs, badges, and resources on what steps to take to boost Fibonacci Day's visibility.

Can I Register Fibonacci Day?

We don't have an international authority or governmental remit to declare any officially celebrated "national Fibonacci day". We only aim to programatically reflect what 'National Day' it is based of what The Internet Says It Is. We believe this is much more fun as it reflects the nature of how the most amusing / interesting national days are often created organically and grow based off popular social trends and sharing, as such we don't add new days to our database unless they are organically observed on social media.



Is it National Fibonacci Day Everywhere?

Yes? No.. Sort of | Maybe ¯\_(ツ)_/¯

What's really intersting is how whilst some National Days like National Daughters Day are seemingly celebrated internationally irrespective of geography, some very popular days (That often become the No. 1 National Day on our homepage) are in fact locally very specific and are offical holidays celebrated on a Country's national calendar. Take National Rambutan Day for instance, Rambutan is a popular Souteast Asian fruit and not seen so much in the UK, Europe or the USA. Some regionally specific trends subsequently become immensely popular internationally and worldwide, partly fuelled by widely shared 'National Days', National Pabebe Wave Day being one such example.


We're now tracking the sentiment around every mention of Fibonacci day to show how people feel about Fibonacci. See if people like Fibonacci here.
We're detecting how Fibonacci affects other things more widely than just being a celebrated day. See how Fibonacci affects company share prices.


Hang On, It Was National Fibonacci Day Already This Year..!?

Yes, this is strangely enough entirely possible. The date shown for National Fibonacci Day can change, if for instance several hundred people tweeted about Fibonacci Day in early April, then in May a few thousand people tweeted about Fibonacci day, then the date shown for National Fibonacci Day, could come up twice :D

We have also detected mentions of Fibonacci day on;



Get The Badge

National Fibonacci Day

It's Fibonacci Day
On November 20th


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National Fibonacci Day, on the 20th of November

Other Days

National Dog Day
National Donut Day
National Puppy Day
National Girlfriend Day
National Best-Friend Day
National Single Day
National Daughter Day
National Boyfriend Day
National Pug Day
National Daughters Day
National Pet Day
National Pancake Day
National Hug Day
National Hot-Dog Day


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For people who wish to promote National Fibonacci Day, we've put together the following resources.
See also: How does Fibonacci affect the share price of Apple, Facebook, Microsoft?
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