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 2450 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2451 Sep 18 2452 Sep 18 2453 Sep 18 2454 Sep 18 2455 Share this event