(d) Exculpatory and Impeachment Material

The government shall disclose any evidence material to issues of guilt or punishment within the meaning of Brady v. Maryland, 373 U.S. 83 (1963), and related cases, and any impeachment material as defined in Giglio v. United States, 405 U.S. 150 (1972), and related cases, at least twenty-one (21) days before trial. For good cause shown, the government may seek approval to disclose said material at a later time.