Clarkstown Reformed Church 107 Strawtown Rd, West Nyack, NY10994 Clarkstown Reformed Church offers regular worship and various programs to residents of the area. Services are at 10:30…More a.m. Sunday mornings. Services are accompanied by a choir and are kid-friendly. Sunday school is offered during the church service for school aged children from September through June. Adult Christian education programs are also available. The Clarkstown Reformed Church is involved in various community outreach and charity efforts, including Operation Christmas Child, Soldier Angels and various local charities to bring food, blankets and clothing to the needy.