Also known as Bhai Dooj, Bhai Tika, Bhaubeej, Bhai Beej or Bhai Phota, Bhratridwitiya is a regional public holiday in the Indian state of West Bengal. It is observed on the fifth day of the Diwali festival, on the second lunar day of the Shukla Paksha (bright fortnight) of Kartika, the eighth month of the Vikram Samvat Hindu calendar or the Shalivahana Shaka calendar
Bengalis consider Bhai Phota as one of the prominent festivals. This festival represents the beautiful bond of love and affection between brothers and sisters. It is observed with lot of fervor and enthusiasm throughout Bengal.
Bhai Phota ritual begins at the moment when Amavasya ends. Protipod and Dwitiya are the next tithis to Amavasya.
According to legend it was on this day that the Yamuna River and her brother Yama were re-united after a long period of separation. Yama Raja (Dharam Raja) and Yamuna (Children of God Surya) are worshiped on this auspicious day. It was on this day the Yama raja visited his sister Yamuna of Gokul. The brother, who after bath in Yamuna or some other sacred river, visits her sister, no longer gets terror stricken by the thought of Yama Raja, the God of death.
