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 2046 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2047 Sep 18 2048 Sep 18 2049 Sep 18 2050 Sep 18 2051 Share this event