There was no year zero century or year zero. 1 AD immediately followed 1 BC. The first century AD immediately followed the first century BC. There was no century between them.
The first century AD fell between the years 1 and 100.
No such century existed, as there was no year zero. The century you are probably thinking of ran from 1 to 100. It was the first century AD. Even if there was a year zero, then that would have been an extra year, so it would be 101 years and so it would not be a century.
2004 is in the twenty-first century.
The First.
Any year between 601 AD and 700 AD.
No time at all. The first century AD immediately follows the first century BC. There is no zero century, year zero or anything else between them.
In 7th century AD
-99
The first century AD fell between the years 1 and 100.
The fourth century. The first century is 1-99 AD (there was no year zero!), the second 100-199, the third 200-299 and the fourth 300-399, and so on.
It is the first century AD.
The first century AD.
It is the first century AD.
The first century AD.
The first century AD
1034 years is 10.34 centuries. 1034 AD is in the 11th century AD 1034 BC is in the 11th century BC The first century AD was the years 1 AD to 100 AD The second century AD was the years 101 AD to 200 AD etc. The first century BC was the years 100 BC to 1 BC The second century BC was the years 200 BC to 101 BC etc There was no year 0 as zero did not exist as a concept when Dionysius Exiguus set up the "modern" calendar dates in the year designated 247 Anno Diocletiani which he calculated as 531 years after the birth of Jesus and so designated 531 AD, from which all our dates then follow on. (Zero was invented around 1100 AD).
The first century AD consists of the years 1AD to 100AD.