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 2050 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2051 Sep 18 2052 Sep 18 2053 Sep 18 2054 Sep 18 2055 Share this event