The Dead Sea Scrolls
The keepers of the Bible calendar from the Temple were exiled to Qumran/ Bethabara. These were and are the Zadok whom are commended in Ezekiel for remaining TRUE to Yahuah.
There is no other in that period up until Messiah whom ever replaced them other than the illegal usurpers of the Temple and Priesthood called the Pharisees and Sanhedrin. These legitimate Priests in Qumran/Bethabara kept a calendar so there is no doubt when these dates occur according to the true Temple practice.
You can view and download the translated version of the Dead Sea Scrolls HERE.
