Janai Purnima Or Raksha Bandhan

(The sacred thread festival)
Janai purnima, commencing on the full moon day of August, is the day when annual changing of the sacred thread, a yellow string worn about the neck and underarm beneath the clothing of higher cast Hindus- Brahaman, the learned priestly class Chetris, originally rural and warriors. The wearers observe certain religious rituals and undergo through fasting to make themselves clean and worthy enough to receive the sacred thread since to wear such a thread symbolizes that the person has control over body, comes chants mantras according Vedic traditions and gives the thread to the wearers. Those incapable of being clean according to the Brahaminic values and women are not allowed to wear it. On the same day men, women and children of every caste - Hindus and Buddhists alike - wear the sacred yellow thread called Raksha Bandhan - Raksha meaning protection and Bandhan meaning bond - about the wrist.
                                                                                                                      Source: Nepal Tourism Board