Avani Avittam is a traditional Tamil brahmin festival practiced by men in the house. In Tamil word, Upakarma means “Arambham” – Beginning to study Veda. … We follow Yajur Veda and perform Yajur Upakarma in the month of Aada/ Avani according to the Tamil calendar (August-September), on the day of the full moon (pournami).