ClemsonWiki:Selected anniversaries/April 21
- 1978 - "Monty Python Meets Beyond the Fringe", a filmed live stage performance by the two British comedy troupes, is shown in the Palmetto Ballroom, admission is $1. This was from the First Secret Policeman's Ball.
- 1979 - Orange and White game played in Death Valley. Seventh annual Bengal Ball held at Y Beach.
- 2006 - Mock Turtle Soup performance.