Maha Ashtami Upvaas is a compulsory fasting day for those who observe Navratri Vrat. In 2015, Maha Ashtami Upvaas date is October 20. Also known as Durga Ashtami Upvaas, it falls on the same day of Durga Ashtami.
On Maha Ashtami day in 2015, Saraswati Balidaan / Visarjan, Ekratrotsa, Sri Mahalakshmi Jaagar Kolhapur, Bhadrakali Avataar, Mata Mahagauri Puja as a part of Navadurga Alankarams & Maha Durga Devi Puja in Navadevi Alankarams of Navratri, Bathukamma Festival in Telangana and Kalika Ashtami are celebrated.
Ayudha Puja and Suvasini Puja are observed on this day in some places.
Kanjak Ashtami (Kanya Puja / Kumari Puja) is also observed on Durga Puja Ashtami.