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 3403 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 3404 Sep 18 3405 Sep 18 3406 Sep 18 3407 Sep 18 3408 Share this event