On This Day

What Happened on March 7, 321 AD

Historical Events


Event of interestEvent of Interest

Roman Emperor Constantine I decrees that the dies Solis Invicti (sun-day) is the day of rest in the Empire

Roman Emperor Constantine the Great
Roman Emperor
Constantine the Great

List of Years

About March 7, 321 AD

Day of the Week: Thursday
How Long Ago? 1699 years, 11 months and 17 days
Leap Year: No

Star Sign: Pisces