Navaratri is an annual Hindu festival observed in honor of the goddess Durga, an aspect of Adi Parashakti, the supreme goddess. It spans over nine nights, first in the month of Chaitra, and again in the month of Ashvin. It is observed for different reasons and celebrated differently in various parts of the Hindu Indian cultural sphere. Theoretically, there are four seasonal Navaratris. However, in practice, it is the post-monsoon autumn festival called Sharada Navaratri. From Wikipedia
