What does A.D. mean?
A.D. stands for Anno Domini, which is Latin for "year of our Lord," and it means the number of years since the time of Jesus Christ. That was 2000 years ago, so the date 500 A.D. means 1500 years ago.
Some people use C.E. instead. That stands for Common Era, and is used in order to avoid Christian references. History for Kids feels that since this is a Christian dating system, it's a little silly to try to hide that.
Find out about B.C. or B.C.E.
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