## Famous Birthdays

- SimÃ©on-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?** 238 years, 11 months and 13 days

**Leap Year:** No

**Star Sign: Cancer**