Arbor Earth Day/Thousand Oaks Arbor Earth DaySaturday, April 19, 2025 | 10:00 am - 2:00 pm | Map It Come celebrate Arbor Earth Day at the Thousand Oaks Community Center on April 19th, 2025. Learn more here! In-Person Event? Yes Certifications Available? No Event Date Sat, Apr 19 2025, 10am - 2pm