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 2418 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2419 Sep 18 2420 Sep 18 2421 Sep 18 2422 Sep 18 2423 Share this event