Did the Roman Calendar Originally Have only 10 Months?

The Hebrew Roots of the Roman Calendar

The oldest Roman calendar was said by some Roman scholars to have had 10 months because the Roman year ended at the end of December, which means “tenth” in Latin. However, this explanation appears to have been invented by late Roman scholars to explain why the year ended with the month named “ten” (December).

The actual history of the Roman calendar bega…