Madison Discovery DayMadison Discovery DayClipartShare on TwitterShare on FacebookJuly 25, 2015 | 8:00 AM - 11:00 PMCity of Madison Madison, SD United StatesEvent Website: http://chamberofmadisonsd.com/Uploads/2015%20Disvocery%20Day%20Flyer.jpgAdditional Information8am-11pm in Madison, South Dakota. A full day of events, activities, informative and fun booths, food vendors and more.