The Primavera Calendar is a calendar that has twelve 30-day months named after signs of the zodiac starting with Capricorn. In addition to the 12 months, there is an extra day after every third month, before the first month and in leap years before the 7th month. The days of the week are Sun, Moon, Air, Water, Fire and Earth. Each month has five six-day weeks. The extra days no not belong to any week.
- The Primavera Calendar / Primavera D. Hornblower.