It's National Sound Check Day on December 12th.
More on Sound Check Day and the other days on the 12th below.
We detected 316 references to national Sound Check day on 12th the December. There were also a total of 38 other national days mentioned including: Poinsettia, Gingerbread House, Sound Check and Memorial Every Single Day.
The day shown for 'National Sound Check Day' is shown as we detected that day mentioned the most out of all the references to national days there were on December the 12th 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!