neutrino day 9AM-4PM | JULY 13 | LEAD, SD EXPLORE SOUTH DAKOTA'S LARGEST FREE SCIENCE FESTIVAL! SCAN FOR AGENDA, ACTIVITIES & MORE! or visit neutrinoday.com neutrino day 9 AM-4PM | JULY 13 | LEAD , SD EXPLORE SOUTH DAKOTA'S LARGEST FREE SCIENCE FESTIVAL ! SCAN FOR AGENDA , ACTIVITIES & MORE ! or visit neutrinoday.com