Janai Purnima, the thread festival, falls on the full moon day in the month of Bhadra (August/ September) and is celebrated with great gusto, devotion and splendor by Hindus all over the country.
Janai is sacred thread and purnima is full moon day, hence, Janai Purnima points to the change of the thread on the auspicious full moon day. On this day, the Tagadharis (Hindu men wearing the sacred thread), especially the Brahmins and Chettris performing their annual change of Janai (sacred yellow cotton thread) slung from the shoulder and also tie Tago (sacred thread) sanctified by priests chanting the Gayatri Mantra as a symbol of protection. The janai is given to Hindu men in coming-of-age ceremony called Bratabandha that initiates them into manhood and commands them to faithfully follow the religion. It must be worn everyday of their lives from this day onwards. The triple cord of janai is a symbol of body, speech and mind, and when the knots are tied the wearer is supposed to gain complete control over each. After taking bath and making offerings to the Saptarishis (seven legendary Rishis or sages) and to their departed fathers and fore-fathers, the tagadharis put new janai with a belief of having absolute control over mind.