El Cajon’s America on Main Street

This year’s event has an “Out of This World” theme to celebrate the 50th anniversary of the 1969 lunar landing. Live bands and dance performances, a light show, kids’ activities, a scavenger hunt, vendors and more. 2-9 pm. Free admission. Main St., between Magnolia & Avocado Aves. www.americaonmainstreet.org