On This Day

What Happened on May 15, 1618

Historical Events

InventionScientific Discovery

German astronomer Johannes Kepler discovers the third of his three planetary laws his "harmonics law"

Astronomer Johannes Kepler
Johannes Kepler

1618 Highlights

About May 15, 1618

Day of the Week: Tuesday
How Long Ago? 402 years, 9 months and 17 days
Leap Year: No

Star Sign: Taurus