Historical Events
- Cleveland Metroparks' Valley Parkway All Purpose Trails are completed
NHL Record
Islander's Mike Bossy's 30th career hat trick-4 goals

Mike Bossy
- The Monterey Bay Aquarium opens in Monterey Bay, California.
Famous Birthdays
- Andrew Trimble, Northern Irish rugby player for Irish rugby team
- Florent Sinama-Pongolle, French footballer
Famous Deaths
- Carl Ferdinand Cori, Czech-American bio-chemist (Nobel 1947-discovery of how glycogen (animal starch) – a derivative of glucose – is broken down and resynthesized in the body, for use as a store and source of energy), dies at 87
Paul Dirac
Paul Dirac, English physicist (quantum electrodynamics, Nobel 1933), dies at 82

Paul Dirac
1984 Highlights
About October 20, 1984
Day of the Week: Saturday
How Long Ago? 36 years, 3 months and 6 days
Leap Year: Yes
Generation Millennial
Chinese Zodiac: Rat
Star Sign: Libra