Becasue juliys ceasur added his own month (July) and Augustus added his own as well (august) shifting December to number 12 instead of ten
Hope this helps
10
The old roman calendar such as December mean 10 month because dec mean 10.
March was once the first month of the year.
December will be represented by 12 as the twelth month. So it would be XII.X.MMVIII.
The month of December means the 12th month of the year.
The month of December means the 12th month of the year.
In the early Roman calendar there were only 10 months in the year with October being the 8th month and December being the 10th and final month of the year. It was Julius Caesar who introduced two more months in the year which was known as the Julian Calendar thus making October the 10th month of the year and December then became the 12th and final month of the year.
December is the twelve month.
10It was the tenthThe month of December on the Roman calendar was the twelfth month, the same as ours.December was December, it was a Roman month.
10/12
The 12th month is spelled "December."
Winter starts on December 21, so December is an autumn and winter month.