Historical Events
- Mount Unzen on Japan's Shimabara Peninsula, erupts creating a tsunami, killing about 15,000; Japan's deadliest volcanic eruption
Famous Birthdays
- Gaspard-Gustave Coriolis, French scientist (Coriolis effect), born in Paris, France (d. 1843)
About May 21, 1792
Day of the Week: Monday
How Long Ago? 231 years, 11 months and 23 days
Leap Year: Yes
Star Sign: Gemini
