The Roman calendar was just a lunar month times ten until being fixed to a solar year around like 500 BC
I don't know if there are retroactive fixes to what years were which and if that coincides with the Bible or universal acceptance of their solar calendar
Plus the winter, which was unassigned until it eventually became January and February. I don't see anything about it counting the entire year as anything other than a solar year.
I don't know if there are retroactive fixes to what years were which and if that coincides with the Bible or universal acceptance of their solar calendar
Let me know