<Dd> 1500 AUC = 747 AD </Dd> <Dd> 2000 AUC = 1247 AD </Dd> <Dd> 2206 AUC = 1453 AD (Fall of Constantinople) </Dd> <Dd> 2245 AUC = 1492 AD </Dd>

What is the year 1206 ab urbe condita (auc) better known as