Noon–5pm Haffen Park Back to School Concert & Giveaway Ages: AllArt Books & Readings Haffen ParkBronx, New York
11am–2:30pm Volunteer New York! 15th Annual 9/11 Serve & Remember Days of Service: Meal Packing Ages: AllCommunity Free Monore University Athletic ComplexNew Rochelle
5–8pm Free First Fridays: Mariachi Music and Dance Ages: AllCommunity Free Hudson River MuseumYonkers
7pm Movie Nights at the Nature Center on the Great Lawn Ages: 5 – 12Community Film Greenburgh Nature CenterScarsdale
Noon–4pm Bronx Block Party Ages: 5 – 8Community Festivals Bronxwood Avenue, between Boston Road & Allerton AvenueBronx
Noon–6pm Ferragosto Festival in Bronx Little Italy Ages: AllCommunity Festivals Corner of Crescent Ave and Arthur AveBronx
7–8pm Seeing the Night Sky Through Timelapse Photography (A Free, Virtual Lecture) Ages: 9 and upArt Community Hamptons Observatory (online)East Hampton
7pm Movie Nights at the Nature Center on the Great Lawn Ages: 5 – 12Community Film Greenburgh Nature CenterScarsdale
10–11am Back-to-School Family Fun Walk Ages: 5 – 12Classes Community Sheldrake Environmental CenterLarchmont
10am–4pm 18th Annual Old-fashioned Flea Market Ages: AllCommunity Free The Lockwood-Mathews Mansion MuseumNorwalk
10am–4pm Back-to-School Bash at the Hastings Flea Ages: AllCommunity Free Hastings-on-Hudson Metro-North Commuter LotHastings
Noon–4pm Annual Fall Festival – Bronx Neighborhood Health Ages: AllCommunity Festivals Walter Gladwin ParkBronx
10am–noon Volunteer Cleanup at Sheldrake Ages: 9 and upCommunity Free Sheldrake Environmental CenterLarchmont
Tomorrow, 3 pm Lapsit and Little Movers Storytime: Hispanic and Latinx Heritage Month Clason’s Point Library
AMNY NYC Mayor’s Race: Independent attorney Jim Walden exits contest, urging other low-polling candidates to do the same
Gay City News Ridgewood nightclub Earthy Delights celebrates one-year anniversary amid looming closure