Happy Bengali New Year (Subho Noboborsho) 2023 Wishes Images, Quotes, Status, Messages, Photos, GIF Pics: According to the Drikpanchang, it is believed that King Shoshangko of ancient Bengal is credited with starting the Bengali era, which is estimated to be in 594 in the Gregorian Calendar. However, some believe that the Bengali calendar was introduced during the time of emperor Akbar.