Kankar Mata is closely associated with Shitala Devi and is
worshipped in this form mainly in parts of Bihar, Jharkhand and Bengal. She is
mother goddess to many people. She is counted among Saptamatrikas in certain
regions.
There is a widespread belief that it is her anger that
results in contagious diseases. She is propitiated to ward off diseases and for
peace and prosperity.
The seventh and eighth day of a fortnight – saptami and
ashtami – are dedicated to her especially in the months of Chaitra, Baishakh,
Jyeshta, Ashada and Shravan.