During these nine nights and ten days, nine forms of Devi are worshipped. The tenth day is commonly referred to as Vijayadashami or “Dussehra” (also spelled Dasera). Navaratri is an important major festival and is celebrated all over India, Pakistan and Nepal.
Navaratri represents a celebration of the Goddess Amba, (the Power).
Navaratri or Navadurga Parva happens to be the most auspicious and unique period of devotional sadhanas and worship of Shakti (the sublime, ultimate, absolute creative energy) of the Divine conceptualized as the Mother Goddess-Durga, whose worship dates back to prehistoric times before the dawn of the Vedic age.
A whole chapter in the tenth mandal of the Rigveda addresses the devotional sadhanas of Shakti. The “Devi Sukta” and “Isha Sukta” of the Rigveda and “Ratri Sukta” of the Samveda similarly sing paeans of praise of sadhanas of Shakti.