10am–4pm Railway Post Office Dog Day at the Danbury Railway Museum Ages: 3 and upAttractions Food & Drink Danbury Railway MuseumDanbury
11am–4pm Anniversary of the Battle of Stony Point Ages: AllFree History & Culture Stony Point Battlefield State Historic SiteStony Point
Noon–4pm Second Sunday Kids Crafts at the HSRC History Center Ages: 5 – 8Craft & DIY History & Culture Historical Society of Rockland CountyNew City
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
7–8pm Apollo-Soyuz: The Mission & The Astronauts (A Free, Virtual Lecture) Ages: 9 and upCommunity Free Hamptons Observatory with Suffolk County Community College (online)East Hampton
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
5–5:45pm All Summer: Battle of the Books Team Training Ages: 13 and upBooks & Readings Caribbean Finkelstein Memorial LibrarySpring Valley
Noon–4pm Barnyard Tails & Activities Day with Jonathan Kruk and Steve Kelman Ages: 5 – 8Craft & DIY History & Culture Historical Society of Rockland CountyNew City
Noon–4pm Barnyard Tails & Activities Day Ages: 5 – 8Games History & Culture Historical Society of Rockland CountyNew City
10am–4pm 18th Annual Old-fashioned Flea Market Ages: AllFree History & Culture The Lockwood-Mathews Mansion MuseumNorwalk
11am–5pm Rooted in Westchester: REV FEST 250 Ages: AllFestivals Free Croton Point ParkCroton-on-Hudson
11am–5pm Rooted in Westchester: REV FEST 250 Ages: AllFestivals Free Croton Point ParkCroton-on-Hudson
Gay City News RFK abruptly cancels meeting of task force responsible for determining preventive services