The official imperial calendar, used throughout the Sentran Empire.
The first month of the year is Martius with 32 days. It's followed by Aprivius, Mais, Iunius, and Quintil, which are also all 32 days long. Next is the intercalary Midsummer week. The month of Saxtil has 33 days, then Caderus, Nundinus, and Lepidus have 32 days. The next month is Brumus, which is 33 days long. The year ends with the intercalary Midwinter week.