Raksha Bandhan (Rakhi Pournami / Jandhyala Purnima)
Shravana Pournami brings three celebrations together: sisters tie the rakhi on their brothers' wrists, those who wear the sacred thread change it in the Upakarma ritual – hence Jandhyala Purnima – and devotees worship Lord Hayagriva, the protector of the Vedas, on his Jayanti.