Navadurga are the 9 forms of Goddess Durga Maa. The nine forms of Durga Maa are worshipped during Navratra on certain days and are named: Shailputri on Pratipada; Brahmacharini on Dwitiya; Chandarghanta on Tritiya; Kushmanda on Chaturthi; Skand Mata on Panchami; Katyayani on Shashthi; Kaalratri on Saptami; Mahagauri on Ashtami and Siddhidatri on Navami.