other Pujas, it is performed during the mid night, on the scheduled date (Amavasya Tithi), end of the bengali month of Ashwin, i.e. late October, in English Calendar.
This festival for some (especially the business community and the original population of West Bengal) is marked in terms of 'Lakshmi and Ganesh Puja' and is popularly known by the name of Diwali. 'Dhanteras' is another popular word which marks the festivity of celebration and is depicted as an auspicious time in the Hindu Calendar. This is when many Hindus believe that some metallic things can be bought, which includes gold or silver in order for bringing prosperity on the domestic front.
Kalipoojan (Kali puja) is when the devotees seek protection from all dangers through seeking blessings from the black Goddess, for general happiness, health and prosperity.
The puja paddhati (methodology) is a tantrik puja performed in most of the places with the help of animal sacrifices.
The Goddess is sometimes depicted in the form such as Dakshina Kalika. The puja starts when she is worshipped as a creator, then she devours the creation, only to become a complete woman, who in the later part of the puja is said to be a 'Tantrik Bhairavi'(a post menstruating woman). She is the depiction of human anger, sacrifice, negative thoughts, and outburst of emotions.
She is the supreme emotion, who is said to have conquered even death, and hence she is all black in color. She is depicted is some places as 'Mahakal', i.e. time which conquers everything and rebulids and destroys in a continuous cycle.
Her puja is hence performed with 'Panchanaivedya', which includes alcohol as one of the major ingredient.
The siddhis (rites followed as a part of the process) are a part of the main tantrik rites. These are called the six acts (shatkarma) of pacifying, subjugating, paralysing, obstructing, and driving away, and death-dealing.
In the advance part of the puja, the rites relate to 'Shavajagran', i.e. a special method to arouse the dead. This is when is the junction of creation and destruction and life (prandan) happens in the idol being worshipped.
Goddess Kali is worshipped with red flowers of hibiscus, thus arousing the negative forces of nature (sometimes depicted as dakini and jogini). Then the worshipper attains siddhi, gives the idol life, through sacrifices and takes her body for devouring.
She is worshipped till the beginning of the next day, and puja ends with the sunrise. The tithi is said to exist for a day, at the end of which the Goddess is immersed in the Ganges.
Firecrackers form an important, item to light up the spirit of Kalipuja.