BTW what are the years between BC and AD called?
There are no years between B.C. and AD. B.C. is before the birth of Christ. A.D. Is after his birth. Not after his death. Anno Domini is “Year of the Lord”. Yes the one is English and the other Latin. There used to be A.C.n. (Ante Christi, natum) but the usage changed to English some time ago.