Famous Birthdays
- Michał Wiśniowiecki, King of Poland (1669-73), born in Biały Kamień, Polish-Lithuanian Commonwealth (d. 1673)
1640 Highlights
About May 31, 1640
Day of the Week: Thursday
How Long Ago? 381 years, 11 months and 23 days
Leap Year: Yes
Star Sign: Gemini
Authors
Civil Rights Activists
Inventors
Kings
Revolutionaries
Scientists