Tribal wall painting is an age-old tradition. The personal experiences of the artists and their interactions with the nature are the biggest influence in these art forms. Khovar art was traditionally for decorating the marriage chamber of the bride and groom, and it usually depicts the animals and plants of neighbouring forests and valleys.
Sohrai is a winter harvest festival and one of the most important festivals of santhals in Jharkhand and West Bengal. It is mainly celebrated at the beginning of winter harvest, when the paddy has ripened, on the new moon day of the Bengali month of Kartik, coinciding with Diwali or Kali puja, in the month of October-November.
People of eastern Indian states of West Bengal, Assam and Orissa worship Goddess Laksmi on Kojagori Purnima night — the full moon night in the month of Ashwin of Bengali calendar, just four days after Vijaya Dashami or Dusshera — the last day of the Durga puja in the month of October. Kojagori Purnima coincides with Nabanna or the harvesting festival or season which commences from this day when the harvested grains are consumed in households.