On This Day

What Happened on August 4, 1181

Historical Events

  • Supernova SN 1181 in the constellation Cassiopeia observed by Chinese and Japanese astronomers, lasting until August 6
List of Years

About August 4, 1181

Day of the Week: Friday
How Long Ago? 840 years, 4 months and 2 days
Leap Year: No

Star Sign: Leo