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 2425 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2426 Sep 18 2427 Sep 18 2428 Sep 18 2429 Sep 18 2430 Share this event