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 4172 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 4173 Sep 18 4174 Sep 18 4175 Sep 18 4176 Sep 18 4177 Share this event