How many years between 9 BC and 12 AD?

Answer 1

33 years i believe ============ No. There is no interval at all from B.C. to A.D., not even a year zero. The concept of a mathematical zero had not been developed.

Answer 2

BC is longer because AD has only had 2009 years, wheras BC has had BILLIONS.

Answer 3

I believe 20 years because there was no Year 0

Answer 4

There is no time period between BC and AD - dates went from the equivalent of December 31, 1BC to January 1, 1AD.