Actually January and February were added to the end of the calendar. Used to be March was the first of the year. Which is why Sept (month 7) through December (month 10) are months 7-10 after March.

December was the last month of the year and then there was just this empty time from December through March, they didn’t have a month for it because they were agrarian and that time they didn’t really do anything anyway. March being the start of spring, being the logical time to start a new year for them.

Later they added January and February. Which is why February has a short month, it was the last of the year, a logical place to have an odd number of days month.

At some point someone decided January should be the first of the year and then moved it. I forget when that happened.

I know someone who calls it the “Specific Ocean”