Wikipedia:Selected anniversaries/September 30
September 30: Independence Day in Botswana (1966)
- 1399 - The Duke of Lancaster deposed Richard II to become Henry IV of England, merging the Duchy of Lancaster with the crown .
- 1980 - Ethernet specifications were published by Xerox, working with Intel and Digital Equipment Corporation.
- 1982 - Cyanide-laced Tylenol killed six people in the Chicago, Illinois area. Seven were killed in all. The incident is known as the Tylenol scare.
- 1991 - Haitian President Jean-Bertrand Aristide was overthrown in a coup d'état and replaced by General Raoul Cédras. A large-scale exodus of boat people ensued.
- 1999 - Japan's worst nuclear accident took place at a uranium reprocessing facility near Tokyo, exposing workers and local residents to very high levels of radiation.
Recent days: September 29 – September 28 – September 27