Event Name: All Sites Closed on Monday Location: CHM Sites Event Date: Monday, 6/15/2026 Event Time: 8:00 AM - 5:00 PM Duration: 9 hours Our regular business hours at Main Street Children's Museum, Historic Brattonsville & Museum of York County are Tuesday - Saturday from 10:00 am - 5:00 pm & Sunday from 1:00 pm - 5:00 pm.