Avani Avittam is the most important ritual observed by Brahmin community in Kerala and Tamil Nadu. Avani Avittam dates are given here with the links of Avani Avittam mantras, sankalpam, and whole procedure.
Rig Veda Avani Avittam 2013 date is August 20, Krishna Yajur Veda Avani Avittam 2013 date is August 20, Shukla Yajurveda Avani Avittam 2013 date is August 20, and Sama Veda Avani Avittam date is September 7 in 2013.
Avani Avittam, also known as Upakarma or Yagnopaveetha Dharana, is the ceremony of changing the sacred thread (Yagnopaveetham / Jandhyam / Janeyu). It is observed on different dates by different Brahmin communities.
Rig Veda Avani Avittam is observed on Shravana nakshatram in Avani month (Simha masam). Yajurveda Avani Avittam falls on Shravana Pournami (Full Moon day in Avani masam), and Samavedi Avani Avittam is celebrated on the day when Hastha nakshatram falls on Panjami Tritiyai in Avani month.