Historical Events
- Battle of Breitenfeld: King Gustaaf Adolf of Sweden defeats Johann Tserclaes, Count of Tilly.
1631 Highlights
About September 17, 1631
Calendar: Julian 
Day of the Week: Saturday
Calendar: Gregorian 
Day of the Week: Wednesday
How Long Ago? 392 years, 10 months and 16 days
Leap Year: No
Star Sign: Virgo
