In my critical analysis, women were the first to visit the cradle of Anno Domini [AD], latin “In the year of lord.” Basically according to Julian and Gregorian Calendars. Anno Domini [AD] are years after Christ ascended into heaven, while Before Christ [BC] were years before Christ descended onto world.
So, I hold view, the cradle of Anno Domini was the Resurrection of Christ at the tomb, which is named Easter Monday. And Easter is abstract noun which refer to things that do not physical existence mainly formed from other word classes, like East for Easter.
After the Sabbath, at dawn on the first day of the week,Mary Magdalene and the other Mary went to look at the tomb: Matthew 28 ; 1.