Historical Events
- Giacobini discovers a comet (will be 1st comet visited by spacecraft)
Famous Birthdays
- Gabby Hartnett, American Baseball Hall of Fame catcher (MLB All Star 1933–38; NL MVP 1935; Chicago Cubs) and manager (Chicago Cubs), born in Woonsocket, Rhode Island (d. 1972)
About December 20, 1900
Calendar: Gregorian
Day of the Week: Thursday
How Long Ago? 123 years, 7 months and 12 days
Leap Year: No
Generation: Lost Generation
Chinese Zodiac: Rat
Star Sign: Sagittarius