| Date | Event |
|---|---|
| April 03 1981 | First Portable Computer Unveiled In San Francisco |
| April 04 1981 | Iran Attacks Iraqi Airbase |
| April 09 1981 | Accidental Collision Sinks Japanese Cargo Ship |
| April 11 1981 | Riots In Brixton, South London Result In Numerous Injuries |
| April 12 1981 | First Columbia Shuttle Launch During STS-1 Mission |
| April 14 1981 | 1st Shuttle Flight- Columbia - STS1 |
| April 18 1981 | Pawtucket: Longest MLB Game Temporarily Suspended |
| April 25 1981 | Japan: Nuclear Plant Repairs Expose 100 To Radiation |
| April 26 1981 | Harrison Performs First Open Fetal Surgery In California |
| April 27 1981 | Xerox PARC Introduces The Computer Mouse |