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 2446 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2447 Sep 18 2448 Sep 18 2449 Sep 18 2450 Sep 18 2451 Share this event