The festival of Bhai Dooj is a famous festival for Hindus. This festival is similar to the festival of Raksha Bandhan. The festivals of Bhai Dooj are known by many names like Bhaubeej, Bhai Tika, Bhai Phonta etc. The festival is celebrated on the second lunar day (bright fortnight) of the Shukla Paksha of the Vikram Samvat Hindu calendar or Shalivahana Shaka calendar month of Kartik. It falls on the second day of the Diwali festival.
The celebrations on this day are celebrated similarly to the festival of Raksha Bandhan. On this day sisters give gifts to their brothers and younger sisters also give gifts to their elder brothers. The brothers also give gifts to their sisters. In the southern part of the India, the day is celebrated as Yama Dwitiya.
In the northern part of the India, a ritual is also performed, a dry coconut (called gola in the regional language) is tied with a clava, the sisters perform the aarti of their brother and apply a red tika on the brother's forehead. On the occasion of Bhai Dooj, this tika ceremony, the sister prays for the brother's long and happy life, gives the dried coconut to his brother. In return, elder brothers bless their sisters and give those gifts or cash.
The entire ceremony reflects the brother's duty to protect his sister, as well as the sister's blessing for her brother.
If the brother and sister stay away from each other and cannot go to his and her house, then the sister prays to the moon deity for the long and happy life of her brother and performs the moon aarti. This is why in Hindus, the moon is called Chandamama (Chanda means moon and mother means mother's brother).