Famous Birthdays
- Max Planck, German physicist, father of Quantum Physics (Planck Constant, Nobel 1918), born in Kiel, Duchy of Holstein (d. 1947)
About April 23, 1858
Calendar: Gregorian
Day of the Week: Friday
How Long Ago? 166 years, 2 months and 19 days
Leap Year: No
Star Sign: Taurus
