No founder, proclamation or first observance has been traced for National Mac and Cheese Day. The name appears in no volume of Chase's Calendar of Events digitised by HathiTrust and in no document indexed by the Federal Register, and the earliest archived holiday-listing page found for it was captured in 2018, which dates the listing rather than the day.
National Mac and Cheese Day ran on July 14. Here’s who celebrated with offers this year.


