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 4029 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 4030 Sep 18 4031 Sep 18 4032 Sep 18 4033 Sep 18 4034 Share this event