08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

09:30am - 02:30pm  Farmers Market
Muscoot Farm

10:00am - 01:45pm  Bicycle Sundays
The Bronx River Parkway

10:00am - 04:00pm  Farm Stand
Hilltop Hanover Farm and Environmental Center, Yorktown Heights: (914) 862-5050

10:00am - 12:00pm  Gardening Sundays
Lasdon Park, Arboretum and Veterans Memorial

10:00am - 02:00pm  Hudson River Valley Ramble Hike
Cranberry Lake Preserve

01:00pm - 02:00pm  The Lasdon Dinosaur "Paleo-Pouch"
Lasdon Park and Arboretum

02:00pm - 03:30pm  A Short Time With the Invasives
Edith G. Read Wildlife Sanctuary, Rye: (914) 967-8720

03:00pm - 05:00pm  Here I Stand: Paul Robeson- A Life and Legacy in Word and Song
Paramount Hudson Valley Theater 1008 Brown St., Peekskill, NY 10566

03:00pm - 05:00pm  Robison Summer Concert Series
Kensico Dam Plaza

Port Chester-Rye Brook Public Library Spice Discovery Club
Port Chester-Rye Brook Public Library

08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

08:00am - 05:00pm  Friends of Kensico Cemetery 5K Run/Walk
The Kensico Cemetery 273 Lakeview Avenue Valhalla, NY 10576

10:00am - 12:00pm  Freedom From Smoking® program
Yonkers, NY

04:00pm - 06:00pm  Meadow Restoration for Pollinators and Others: Volunteer Opportunity
Sheldrake Environmental Center

07:00pm - 09:00pm  Freedom From Smoking® program
Yonkers, NY

08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

08:00am - 10:00am  Mall Walk
The Westchester Mall in White Plains

09:30am - 10:30am  Little Explorers -- Sept. 17 is sold out
Muscoot Farm

10:00am - 02:00pm  10th Annual Livable Communities Village Fair
Mount Pleasant Community Center, 125 Lozza Dr, Valhalla, NY

10:00am - 12:00pm  Gardening Tuesdays
Lasdon Park, Arboretum and Veterans Memorial

10:00am - 01:00pm  Mobile Shredder is coming to North Castle
Town Hall - 15 Bedford Road, Armonk, NY 10504

11:00am - 12:00pm  OG Westchester Weekly Speaker Program
Westchester Society for Ethical Culture, 7 Saxon Woods Road, White Plains, NY and via ZOOM Meetings

04:00pm - 06:00pm  Meadow Restoration for Pollinators and Others: Volunteer Opportunity
Sheldrake Environmental Center

04:00pm - 06:00pm  Meadow Restoration for Pollinators and Others: Volunteer Opportunity
Sheldrake Environmental Center

05:30pm - 06:30pm  Outdoor Zumba Class
Kensico Dam Plaza, Valhalla: (914) 231-4033

08:00am - 06:00pm  Boat Launch Open
Glen Island

08:00am - 06:00pm  Boat Launch Open
George's Island

04:00pm - 06:00pm  Meadow Restoration for Pollinators and Others: Volunteer Opportunity
Sheldrake Environmental Center

08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

10:00am - 11:00am  Farm Friends
Hilltop Hanover Farm and Environmental Center

10:00am - 04:00pm  Farm Stand
Hilltop Hanover Farm and Environmental Center, Yorktown Heights: (914) 862-5050

10:00am - 01:00pm  Mobile Shredder is coming to Mount Kisco
Fox Senior Center - 198 Carpenter Avenue, Mount Kisco, NY

04:00pm - 05:30pm  Westchester County Department of Parks, Recreation & Conservation Board Meeting
PRC Headquarters, 450 Saw Mill River Road, Ardsley, New York 10502, 2nd Floor Conference Room

08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

08:00am - 10:00am  Mall Walk
The Westchester Mall in White Plains

10:00am - 04:00pm  Farm Stand
Hilltop Hanover Farm and Environmental Center, Yorktown Heights: (914) 862-5050

10:00am - 01:00pm  Mobile Shredder is coming to Cortlandt
Cortlandt Town Hall - 1 Heady Street, Cortlandt Manor, NY

02:00pm - 03:00pm  Pre-school Art and Story Time
Lasdon Park and Arboretum

07:30pm - 09:30pm  Photography with a Purpose
On Zoom

08:00pm - 10:00pm  Westchester Collaborative Theater (WCT) Presents Murder Ballads, a Staged Reading
Westchester Collaborative Theater 23 Water St. Ossining

08:00am - 06:00pm  Boat Launch Open
George's Island

08:00am - 06:00pm  Boat Launch Open
Glen Island

09:00am - 03:00pm  Garage Sale
Saxon Woods Parking Lot

10:00am - 04:00pm  Farm Stand
Hilltop Hanover Farm and Environmental Center, Yorktown Heights: (914) 862-5050

10:00am - 02:00pm  Lasdon Green Squad
Lasdon Park, Arboretum and Veterans Memorial

10:00am - 01:00pm  Mobile Shredder is coming to New Rochelle
New Rochelle City Hall (Parking Lot) - 515 North Avenue, New Rochelle, NY

10:00am - 11:00am  Stone Walls: A Guided Walk in Time & Nature
Hilltop Hanover Farm & Environmental Center

10:00am - 03:00pm  Volunteer Day
Edith G. Read Wildlife Sanctuary

11:00am - 01:00pm  Miller House Open House
Miller House

12:00pm - 01:00pm  Friends of Marshlands 
Annual Membership Meeting
Marshlands Conservancy

01:00pm - 02:30pm  Invasive Species in Westchester
Lenoir Preserve

01:00pm  Music of the revolution
St. Paul's Church N.H.S., 897 S. Columbus Av., Mt. Vernon, NY

01:00pm - 02:30pm  Pianist Kessa Mefford performing on Sunday, September 21, Mt. Kisco
Presbyterian Church of Mount Kisco, 605 Millwood Rd, Mt. Kisco, NY

01:00pm - 02:30pm  Rockin’ Reptiles!
Marshlands Conservancy

01:00pm - 02:30pm  Stream Exploration
Trailside Nature Museum

02:00pm - 03:00pm  Tour in Tales of Fairy Lands
Trailside Nature Museum

02:00pm - 04:00pm  Westchester Collaborative Theater (WCT) Presents Murder Ballads, a Staged Reading
Westchester Collaborative Theater

08:00pm - 10:00pm  StevieMac: A Fleetwood Mac & Stevie Nicks Experience
Paramount Hudson Valley Theater 1008 Brown St., Peekskill, NY 10566

08:00pm - 10:00pm  Westchester Collaborative Theater (WCT) Presents Murder Ballads, a Staged Reading
Westchester Collaborative Theater