When Is National Opposite Day?


National Opposite Day is on the 17th of September with 4,357 tweets.

More on Opposite Day below.



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About Opposite Day

Is It Opposite Day Today?

It's Opposite day on the 17th of September.

Opposite Day' is by our calculation on: September the 17th. The first time we detected Opposite Day was the 30th of April 2015 and the most recent detection of references to Opposite Day was 4 months, 1 week ago.

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

There were many celebrations relating to national holdiays written about on social media that our algorithms picked up, on the 17th of September. In total we detected 80 total unique days being shared such as Gymnastics Day which had 2,560 people talking about it, or First Love Day having 1,862 tweets. A random sample of which are shown below.


National days on the 17th of September

National Opposite Day, on the 17th of September

How Is The Date For Opposite Day Calculated?

The day shown for 'National Opposite Day' is based off how much chitter-chatter and buzz there was on Sept. 17, 2016 across social media making references to 'Opposite 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: Prisoners Of War Remembrance, Opposite or Public Lands Day. This crowdsourcing of data method to assess the National Opposite 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 Opposite Day

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

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National Opposite Day

It's Opposite Day
On September 17th

Can I Register Opposite Day?

We don't have an international authority or governmental remit to declare any officially celebrated "national Opposite 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 Opposite 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.

teenagers sharing national days on social media

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

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

We have also detected mentions of Opposite day on;



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