Pella Regional Health Center Clinics are closed for the Christmas Holiday, but will re-open on Saturday. This includes clinics in Pella, Knoxville, Monroe, Bussey and Sully. The Emergency Department at Pella Regional Health Center will remain open 24 hours a day. Other services that will be closed on Christmas include the Pella City Hall, Pella Public Library, Pella Post Office, Pella Community Center and the indoor swimming pool in Pella.