The year 647, as with any year between 601 and 700, fell in the seventh century.
The year 1630 would fall in the 17th Century.
The 21st century.
17th Century
The 13th century started with the year 1201 and finished with the year 1300
1800 is the last year of the 18th century.
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.
the 20th century
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.
Any year from 1201 to 1900.
The first year of the fourth century would be 301 (A.D.).
0-99 AD is considered to be the 1st century Therefore, in year 2466, it would be the 25th century
The year 509AD would be in the 6th century.