10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Animals Community Hallock State Park PreserveRiverhead
10 am – 4 pm Arbor Day Festival Ages: AllFamily Festivals Outdoors Planting Fields Arboretum State Historic ParkOyster Bay
May 21, 6:30 pm Remaking Penn Station for Riders and the 22nd Century: A Panel Discussion The General Society Library