March 28, 1895: Bannister denied that he revealed who had stole the Fortesque exam. [3STU]
March 28, 1895: Gilchrist confessed to copying the Fortesque exam. [3STU]
March 28, 1902: Don Murillo vanished, but Miss Burnett escaped. [WIST]
Source
A Day by Day Chronology of Sherlock Holmes according to Ziesler and Christ by William S Dorn DWNP, BSI.