When Is National Big O Day?

National Big O Day is on the 9th of July with 7 tweets.

More on Big O Day below.

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About Big O Day

Is It Big O Day Today?

It's Big O day on the 9th of July.

Big O Day' is by our calculation on: July the 9th. The first time we detected Big O Day was the 9th of July 2015 and the most recent detection of references to Big O Day was 3 years, 5 months ago.

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

There were many celebrations relating to national holdiays written about on social media that our algorithms picked up, on the 9th of July. In total we detected 69 total unique days being shared such as Sugar Cookie Day which had 1,456 people talking about it, or Fried Chicken Day having 418 tweets. A random sample of which are shown below.

National days on the 9th of July

National Big O Day, on the 9th of July

How Is The Date For Big O Day Calculated?

The day shown for 'National Big O Day' is based off how much chitter-chatter and buzz there was on July 9, 2015 across social media making references to 'Big O 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: No Bra, Students or Kissing Day. This crowdsourcing of data method to assess the National Big O 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 Big O Day

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

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National Big O Day

It's Big O Day
On July 9th

Can I Register Big O Day?

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

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

We have also detected mentions of Big O day on;

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