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 2414 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2415 Sep 18 2416 Sep 18 2417 Sep 18 2418 Sep 18 2419 Share this event