When Is National Sisters Day?


National Sisters Day is on the 3rd of August with 32,579 tweets.

More on Sisters Day below.



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About Sisters Day

Is It Sisters Day Today?

It's Sisters day on the 3rd of August.

Sisters Day' is by our calculation on: August the 3rd. The first time we detected Sisters Day was the 10th of April 2015 and the most recent detection of references to Sisters Day was 4 months ago.

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

There were many celebrations relating to national holdiays written about on social media that our algorithms picked up, on the 3rd of August. In total we detected 142 total unique days being shared such as Sister Day which had 7,632 people talking about it, or Watermelon Day having 7,192 tweets. A random sample of which are shown below.


National days on the 3rd of August

National Sisters Day, on the 3rd of August

How Is The Date For Sisters Day Calculated?

The day shown for 'National Sisters Day' is based off how much chitter-chatter and buzz there was on Aug. 3, 2015 across social media making references to 'Sisters 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: Sisters, Girlfriend or Liberation Day. This crowdsourcing of data method to assess the National Sisters 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 Sisters Day

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

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National Sisters Day

It's Sisters Day
On August 3rd

Can I Register Sisters Day?

We don't have an international authority or governmental remit to declare any officially celebrated "national Sisters 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 Sisters 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 Sisters Day Already This Year..!?

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

We have also detected mentions of Sisters day on;



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