9 – 10 am Sound and Silence with Adriana Barone at LongHouse Reserve Environment Health & Fitness LongHouse ReserveEast Hampton
9 – 10 am Parent and Me Music and Movement Ages: 2 and underFamily southampton cultural centerSouthampton
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Animals Community Hallock State Park PreserveRiverhead
10 am – 3:30 pm Brewery Vineyard Bike Tour thru Wine Country Community Environment East End Bike ToursMattituck
10 am – 4 pm Sculpture in the Garden: Jorge Pardo at Landcraft Gardens in Mattituck. Art Outdoors Landcraft Garden FoundationMattituck
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Environment Free Hallock State Park PreserveRiverhead
2 – 4 pm Mattituck Presbyterian Church Graveyard Tour Halloween History & Culture Mattituck Presbyterian ChurchMattituck
3 – 9 pm OKTOBERFEST at Reflextions Riverhead Ages: AllFamily Festivals Food & Drink Milton L. Burns ParkRiverehad
5 – 6 pm Great Decisions Foreign Policy Association: SCIENCE ACROSS BORDERS Free Talks Quogue Library IncQuogue
6 – 7:30 pm Exhibition Opening of Yes, No, WOW : The Push Pin Studios Revolution Art Community The ChurchSag Harbor