Southeastern Ohio Hay Day returns to the Eastern Agricultural Research Station (located near 16714 Wolf Run Road Caldwell, OH 43724) on Thursday, June 21, 2018 with hay equipment demonstrations, a trade show, educational presentations, a meal, and door prizes. This event is free and open to the public. Doors open at 4:00 p.m. with the trade show, meal offered beginning at 4:30 p.m., and equipment demos beginning at 5:30 p.m.