How come we are in the 21st century if we are in the 2000s and not 2100s?

Question

How come we are in the 21st century if we are in the 2000s and not 2100s?

In: Other

Answer 1

Because our modern calendar starts with the year 1 AD. This means that the *first* century went from 1 AD to 100 AD. The *second* century was 101 – 200. Third = 201 – 300. Keep going down the line, and you see that 21st = 2001 – 2100.