Question

What do A.D. and B.C. stand for?

Answer 1

(i) A.D. stands for two Latin words, 'Anno Domini', meaning 'in the year of the Lord' (i.e., Christ). The year 2007, also written as A.D. 2007, means 2007 years after the birth of Christ.
(ii) B.C. stands for 'Before Christ', meaning before the birth of Christ. For example, a time period written as 200 B.C. means 200 years before the birth of Christ. B.C. runs in countdown format as 10.., 9.., 8.., 7.., .......1.. upto the time of Jesus Christ's birth and after his birth A.D. runs in today's date format, i.e., 1.., 2.., 3.., and so on.