9th day of Navratri 2017 is September 29 in Durga Sharad Navratri. This day marks Mahanavami. It also marks the fourth day of Durga Puja in Bengal, Assam, and other Eastern parts of India.
In Chaitra Navratri (Vasant Navratri), 9th day of Navratri was on April 5.
Today’s Goddess to worship in Navadurga Sampradaya is – Maa Siddhidhatri
Today’s Goddess to worship in Navadevi Sampradaya is – Sri Rajarajeshwari Devi
Today’s Goddess to worship in Dasha Mahavidya sampradaya is – Kamala Mahavidya (Kamalatmika)
Today’s Navratri colour is – Read this post for Navratri colours list for 2017
Today’s Naivedyam or food recipe to offer to Durga Mata is – read this post for Nine Naivedyams for Durga
In Nepal, Navratri is celebrated as Dashain. On the ninth day of Dashain, regular puja to Goddess Durga is observed along with the above said vratas. Most of the devotees are not aware about the sixth day of Vratas of Navratri.