It is in the first century BC, which is different to the first century AD.
It is the 18th century AD.
The 1st century AD.
1st century AD
The 1st century AD.
It is the first century AD.
It is the first century AD.
The 1st century AD.
The 3rd Century AD.
It is the second century AD.
The first century AD.
AD 1605 was in the 17th century.