New moon western horizon shortly after sunset and before moonset. A lunation or synodic month is the average time from one new moon to the next. In the J2000.0 epoch, the average length of a lunation is 29.530588 days (or 29 days, 12 hours, 44 minutes, and 2.8 seconds). However, the length of any one synodic month can vary from 29.26 to 29.80 days due to the perturbing effects of the Sun's gravity on the Moon's eccentric orbit. In a lunar calendar, each month corresponds to a lunation. Each lunar cycle can be assigned a unique lunation number to identify it. The
Kaula (month) Swanti. The first two days are dedicated to crows and dogs respectively. The 15th day is Lakshmi Puja when households worship the goddess of wealth in their private shrines. The day is also the last day of the lunar Nepal Era, and traditionally merchants closed their accounting books. Kaula (month) Kaulā (Nepal Bhasa: कौला) is the twelfth month in the Nepal Era calendar, the national lunar calendar of Nepal. The month coincides with Ashvin (अश्विन्) in the Hindu lunar calendar and October in the Gregorian calendar. Kaulā begins with the new moon and the full moon falls on the 15th