Bengali Calendar is also known the Bangla Calendar or Bong Calendar. The current Bengali Year is Bengali calendar 1430 BS or Bengali Sambat. Bengali Calendar is based on Solar Calendar. There are two types of Bengali Calendar. One used as an Offical Calendar in Bangladesh and another used in Indian states of West bengal, Tripura and Assam. The New Year of Bangladesh is called Poyla Boishakh. Poyla means first. In Bengla Calendar the new year starts from the middle of april (approximately 15th of the april).