Home Events Calendar - Inland Empire Town Planner National Cheeseburger Day National Cheeseburger Day Honoring America’s favorite sandwich with a slice of cheese each year on September 18th. + Add to Google Calendar + iCal / Outlook export Tags: national foo Date Sep 18 2441 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2442 Sep 18 2443 Sep 18 2444 Sep 18 2445 Sep 18 2446 Share this event