It's National Sister Day on August 7th.
More on Sister Day and the other days on the 7th below.
= Total National Day Mentions
We detected 3,655 references to national Sister day on 7th the August. There were also a total of 75 other national days mentioned including: Sisters, Purple Heart, Lighthouse and Handloom Day.
The day shown for 'National Sister Day' is shown as we detected that day mentioned the most out of all the references to national days there were on August the 7th across social media. 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. This crowdsourcing of data method to assess the National Day date is used as opposed to being connected with any Government sacntioned lists :D Hurrah for democracy by concensus!