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 2409 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2410 Sep 18 2411 Sep 18 2412 Sep 18 2413 Sep 18 2414 Share this event