Historical Period10c CE
Classical Shakta canon; integrated into Navratri by c. 10th c. CE
Siddhidatri — Giver of Siddhis — Day 9 of Navratri
Siddhidatri is worshipped on the designated day of Navratri as one of the Navadurga — the nine progressive forms of the supreme goddess. The nine forms together narrate the complete theological progression from the newborn mountain-daughter to the liberated giver-of-siddhis:
The nine days of Navratri are thus a structured spiritual progression — the devotee moves with the goddess from mountain-innocence to liberated wisdom.