Kachhala (month) Kachhala (month) Kachhalā (Nepal Bhasa: कछला) is the first month in the Nepal Era calendar, the national lunar calendar of Nepal. The month corresponds to Kārtik in the Hindu lunar calendar and roughly matches November in the Gregorian calendar. Kachhalā begins with the new moon and the full moon falls on the 15th of the lunar month. The month is divided into the bright and dark fortnights which are known as Kachhalā Thwa (कछला थ्व) and Kachhalā Gā (कछला गा) respectively. The most important festival that occurs during this month is Tihar (Swanti). The first day of the bright fortnight
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