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 2405 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2406 Sep 18 2407 Sep 18 2408 Sep 18 2409 Sep 18 2410 Share this event