National Train Day occurs on the second Saturday of every May, aiming to disseminate information to the public about the various advantages of railway travel and showcase the history of trains in the United States. This annual celebration, typically held on Saturdays close to May 10, commemorates the anniversary of the driving of the Golden Spike in Promontory, Utah, which marked the completion of the first transcontinental railroad in the U.S.

On National Train Day, numerous events take place at Amtrak stations and railroad museums nationwide. These events often feature passenger cars, model railroad layouts, and various exhibits, providing an engaging and informative experience for attendees.