Pancharatrotsav is a five-day vrata observed during Navratri Poojan. In 2017, Pancharatrotsava in Navratri begins on October 14 and ends on October 18.
Usually, it begins on Lalitha Panchami and ends with Saraswati Balidan or visarjan on Mahanavami day. Lalitha Panchami, Durga Sashti, Durga Saptami, Durga Ashtami and Mahanavami are the days of this Navratri Puja method.
The same rituals of Navratri are followed during Pancharatrotsava Vrata. Kalasha Sthapana is performed before starting the puja on first day (5th day of Navratri) and Kalasha will be moved after the completion of Puja on fifth day (9th day of Navratri). Those who are unable to perform the Navratri Puja for nine days, would prefer Pancharatri Vrata observance.
14 October 2018 – Pancharatrotsava Kalasha Sthapana, Saraswati Avahanam
15 October 2018 – Durga Shashti, Moola Nakshatra Puja
16 October 2018 – Pradosh Purvashada Saraswati Puja, Maha Saptami
17 October 2018 – Maha Ashtami
18 October 2018 – Maha Navami, Saraswati Udwasana, Durga Visarjan