Anno Domini
BC means Before Christ AD means Ano Domini (after Christ)
BC = Before Christ. AD = Anno Domini (latin) the year of Christ's birth.
It has only 2 numbers: 9 and 81. Since 9 squared (9^2, 9*9). So all there is is:9 × 9 = 8181 = 9 × 9
The Latin phrase is ad infinitum, and it means that something goes on and on and on. In other words, the same as "etcetera", or "and so on".
The question is unclear. Do you mean from July 9, 1 BC to July 9, 1 AD? If so, then it was one year.... there was no "year zero."
advance
It's German for purely ad
Nero reigned for 13 years and eight months: 13 October 54 - 9 June 68
Dragnet 1967 - 1967 The Big Ad 2-9 was released on: USA: 9 November 1967
Ad van Gessel died on March 9, 1993.
AD means Anno Domini
improvise
1st century
To/for/from/by mother
well
After death