It's National William Day on February 23rd.
More on William Day and the other days on the 23rd below.
= Total National Day Mentions
We detected 13,553 references to national William day on 23rd the February. There were also a total of 80 other national days mentioned including: William, Chili, Toast and Marg Day.
The day shown for 'National William Day' is shown as we detected that day mentioned the most out of all the references to national days there were on February the 23rd 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!