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 2434 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2435 Sep 18 2436 Sep 18 2437 Sep 18 2438 Sep 18 2439 Share this event