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 2274 Venu National Awareness Calendar Communities National Awareness Days Next Occurrences Sep 18 2275 Sep 18 2276 Sep 18 2277 Sep 18 2278 Sep 18 2279 Share this event