Navratri is a significant Hindu festival which is observed for 9 nights and 10 days. During Navratri, nine forms of Goddess Durga are worshipped.
As per Mahakala Samhita, there are four Navratri in Hindu calendar.
Sharad Navratri
Chaitra Navratri
Magha Gupta Navratri
Ashadha Gupta Navratri
As per the religious text, the significance of each Navratri varies from Yuga to Yuga. In Satya Yuga Vasant Navratri during Chaitra lunar month becomes the most significant among all four Navratri. Similarly, in Treta Yuga Gupta Navratri during Ashadha lunar month, in Dvapara Yuga Gupta Navratri during Magha lunar month and in Kali Yuga Sharad Navratri during Ashwin lunar month becomes the most significant among all four Navratri
