Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Bengali calendar or Bangla calendar is a traditional solar calendar used in Bangladesh and India''s eastern states of West Bengal, Assam and Tripura. The year begins on Pôhela Baishakh, which falls on 14 April in Bangladesh and 15 April in India. In Assam, this corresponds to Bhaskar Era, named after the Kamarupa king, Bhaskara Varman.