Kali Puja, also known as Dipanwita Kali Puja, Shyama Puja or Mahanisha Puja, is a festival dedicated to the Hindu goddess Kali, celebrated on the new moon day of the Hindu month Kartik. She is worshipped at night with Tantric rites and mantras.

SPUVIC worships Goddess Kali as per Brahmanical (non-Tantric) tradition with ritual dressing of Kali in her form as Adya Shakti Kali. It is prescribed that a worshipper should meditate throughout the night until dawn, which SPUVIC worshippers strictly follow.