December

December is the twelfth and final month of the year in the Julian and Gregorian Calendars. It is also the last of seven months to have a length of 31 days. December got its name from the Latin word decem (meaning ten) because it was originally the tenth month of the year in the calendar of Romulus  c. 750 bc which began in March. The winter days following December were not included as part of any month. Later, the months of January and February were created out of the monthless period and added to the beginning of the calendar, but December retained its name.