The nine forms of Goddess Durga is a faminine energy form. Each form represents each of 9 days. Sequence of nine-day festival is as follows.

Day 1 – October 1, 2016 (Saturday) – Pratipada, Ghatsthapana, Shailputri Puja
Day 2 – October 2, 2016 (Sunday) – Pratipada, Chandra Darshan, Shailputri Puja
Day 3 (Dwitiya) – October 3, 2016 (Monday) – Brahmacharini Puja
Day 4 (Tritiya) – October 4, 2016 (Tuesday) – Chandraghanta Puja
Day 5 (Chaturthi) – October 5, 2016 (Wednesday) – Kushmanda puja
Day 6 (Panchami) – October 6, 2016 (Thursday) – Skandamata Puja
Day 7 (Shashthi) – October 7, 2016 (Friday) – Katyayani Puja
Day 8 (Saptami) – October 8, 2016 (Saturday) – Kalaratri Puja
Day 9 (Mahashtmi) – October 9, 2016 (Sunday) – Mahagauri Puja, Durga Maha Ashtami Puja, Saraswati Puja
Day 10 (Navami) – October 10, 2016 (Monday) – Siddhidatri Pooja, Maha Navami, Ayudha Puja, Navami Homa
Day 11 (Dashami or Dussehra) – October 11, 2016 (Tuesday) – Navratri Parana, Durga Visarjan, Vijyadashmi (Dussehra)