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 3745 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 3746 Sep 18 3747 Sep 18 3748 Sep 18 3749 Sep 18 3750 Share this event