The five-day grand Diwali festivities that began with the Dhanteras will culminate with Bhai Dooj on Tuesday. Bhai Dooj is also known as Bhau Bheej or Bhai Phota Bhai Dooj is observed on the second day after the new moon or Shukla Paksha in Hindu lunar month of Kartik Hindu lunar month of Kartik generally falls between the months of October and November