Mahanavami is the culmination day of Navratri. It falls on ninth day of Navratri in Ashwin Month.
Mahanavami is celebrated on Ashwin Shukla Paksha Navami, the ninth day of Durga Navratri. In 2017, Mahanavami date is September 29 during Sharad Navratri and April 5 in Chaitra Vasant Navratri.
Maha Navami is the last day of 9-day festival, Sharad Navaratri. As per Hindu beliefs, Durga puja on Maha Navami is equal to Durga pooja performed on all 9 days of Durga Navaratri.
Goddess Siddhidatri puja is performed on Mahanavami day.
On Mahanavami day, in South Indian states especially in Kerala, Ayudha Pooja is performed. Tools, operators, instruments and books are worshipped. The next day of Mahanavami is observed as Vijaya Dashami.
In some rural places, Janthu bali (animal sacrifices) are performed on Mahanavami day. It is to be noted that Hindu culture and society is against animal sacrifices.
Mahanavami in other countries
Mahanavami date in USA – September 29
Mahanavami date in Canada – September 29
Mahanavami date in UK & other European countries – September 29
Mahanavami date in UAE & other Gulf countries – September 29
Mahanavami date in Singapore – September 29
Mahanavami date in Malaysia – September 29
Mahanavami date in Australia – September 29
Mahanavami date in New Zealand – September 29