Get2 FREE Museum Day Admission Tickets from Smithsonian Magazineon September 27th. It’s Museum Day on September 27th meaning free admission to participating museums around the nation. Each ticket is valid for 2 FREE admissions! You canfill out the form hereand request a ticket to a participating venue. The ticket will be available to download immediately up to the date of the event. You must print your ticket and present it to receive your free admission or have it accessible on your mobile device.