Wheel of the Year the last month of the old year and the first month of the new year and is followed by eleven days of extended celebration. In Roman traditions additional festivities take place during the six days leading up to Midwinter. As the first cross-quarter day following Midwinter this day falls on the first of February and traditionally marks the first stirrings of spring. It aligns with the contemporary observance of Groundhog Day. It is time for purification and spring cleaning in anticipation of the year's new life. In Rome, it was historically a shepherd's holiday, while the Celts associated it with
Month on the initial approximation that 2 lunations last 59 days: a 30-day full month followed by a 29-day hollow month — but this is only roughly accurate, and eventually needs correction by using larger cycles, or the equivalent of leap days. Additionally, the synodic month does not fit easily into the year, which makes accurate, rule-based lunisolar calendars complicated. The most common solution to this problem is the Metonic cycle, which takes advantage of the fact that 235 lunations are approximately 19 tropical years (which add up to not quite 6940 days). However, a Metonic calendar will drift against the