It's National Cheeseburger Day on September 18th.
More on Cheeseburger Day and the other days on the 18th below.
We detected 3,065 references to national Cheeseburger day on 18th the September. There were also a total of 62 other national days mentioned including: Gymnastics, First Love, Kissing and Prisoners Of War Remembrance Day.
The day shown for 'National Cheeseburger Day' is shown as we detected that day mentioned the most out of all the references to national days there were on September the 18th 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!