On This Day

What Happened on June 21, 1781

Famous Birthdays

  • Siméon-Denis Poisson, French mathematician and physicist (the Poisson distribution), born in Pithiviers, France (d. 1840)
1781 Highlights

About June 21, 1781

Day of the Week: Thursday
How Long Ago? 241 years, 1 month and 18 days
Leap Year: No

Star Sign: Cancer