CMON CALENDAR « All Events This event has passed. MUSEUM CLOSED September 16, 2019 - September 20, 2019 « Mini Wonders: Goodnight Moon Science on Tap » C’mon will be closed September 16-20, reopening on Saturday, September 21 with the return of the Race to Space Exhibit. Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Start: September 16, 2019 End: September 20, 2019