When Is National Sumn Day?

The internet history of Sumn Day

10th of June is National Sumn Day

  First detected on the 2nd of August 2015

  17 tweets


Is It Sumn Day Today?

It's Sumn day on the 10th of June.

The most recent detection of references to Sumn Day was 2 years, 1 month ago.

There were many celebrations relating to national holdiays written about on social media that our algorithms picked up on the 10th of June. In total we detected 139 total unique days being shared such as Sex Day which had 41,535 people talking about it, or Bestfriend Day having 5,615 tweets.


How Is The Date For Sumn Day Calculated?

The day shown for 'National Sumn Day' is based off how much chitter-chatter and buzz there was on June 10, 2016 across social media making references to 'Sumn 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: Sweet Tea, Iced Tea or Best Friend Day. This crowdsourcing of data method to assess the National Sumn 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 Sumn Day

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

Can I Register Sumn Day?

We don't have an international authority or governmental remit to declare any officially celebrated "national Sumn 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 Sumn 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 Sumn day to show how people feel about Sumn. See if people like Sumn here.
We're detecting how Sumn affects other things more widely than just being a celebrated day. See how Sumn affects company share prices.


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

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

We have also detected mentions of Sumn day on;



Get The Badge

National Sumn Day

It's Sumn Day
On June 10th


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National Sumn Day, on the 10th of June

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


For any media or sponsorship queries, please contact info@whatnationaldayisit.com
For people who wish to promote National Sumn Day, we've put together the following resources.
See also: How does Sumn affect the share price of Apple, Facebook, Microsoft?
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