"Our annual SomerMovie Fest is back with free, family-friendly films starting just after sunset! Showings are scheduled every Thursday evening at dusk from July 5 to August 23. Screenings will take place at different locations around the city..."
The July 5th showing is "Back to the Future".
The movie will be shown at dusk, and 7:30pm is simply a suggested arrival.
Seven Hills Park, Davis Square