Scholars didn't know the the year that Christ would come the first time, and Christ will come again at the end times and again, no one knows when that will be.
However, we can know the months it will all happen. Christ was crucified on Passover, the day that blood on the doorposts saved the babies of the Hebrews. He rose on the day of first fruits, as Christ was the first human to live in eternity. Pentecost happened on the day they celebrated the giving of the law in stone, and the law was now given in our hearts.
Christ will come again at some unknown year on the day for celebrating the Feast of Trumpets--announcing Christ's return, Christ will judge the world on the day of the Feast of Atonement and new Jerusalem will happen on the day of the Feasts of Booths, when people leave their houses to live in booths.