Mana Chaturthi is observed in Ashwin month mainly in
Bengal, Orissa and other
Eastern states of
India. Mana Chaturti 2015 date is
October 17. This is observed during the Navratri and Durga Puja period.
This ritual is observed during the Ashwin Shukla Paksha Chaturthi or the fourth day during the waxing phase of moon in Ashwin month.