Janai Purnima falls on the full moon day in the month of Shrawan, according to the lunar calendar.
Big religious fairs are held at different temples, rivers and ponds on this particular day.
Devotees throng Kumbheshwor in Lalitpur and Gosaikunda in Rasuwa to mark the festival.
The government has declared public holiday on the occasion.
Hindu men, especially Brahmans and Chettris, change the janai, a yellow cotton thread slung from the shoulder and also tie it around the wrist of the right hand.
This is also the day when males, females, and children regardless of status and caste, tie the janai around their wrist, believing that it will bring them good luck.
Rakshya means ‘protection’ and bandhan means bond.
Sisters offer protection to their brothers wishing them a long and successful life in some communities. It is believed that this thread should only be removed after Laxmi Puja, which falls three months later, and tied to the tail of a cow that helps them cross a river called Baitarni in the journey of the soul after life.