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 2456 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2457 Sep 18 2458 Sep 18 2459 Sep 18 2460 Sep 18 2461 Share this event