Different sects of people have different dates on which upakarma is performed. Traditional learners of Yajurveda observe the Yajur upakarma in the month of Shraavana (August–September), on the full moon day; more particularly, Yajur upakarma is held on the full-moon day that comes before the new-moon day of the month of Sravana (Avani). Rig Vedic Upakarma is observed on the day in/on sukla paksha Shravan month which has Shravana nakshatra.Rig Vedic Brahmins change the sacred thread on that day, irrespective of whether it is a full-moon day (purnima) or not. Shukla Yajurvedic bramhins of North India and Odisha do upaakarma on the previous day if Purnima spans two days (shukla chaturdashi yukta Purnima). Sama Vedic Upakarma is observed on the day after Shravan Amavasya, Hastha nakshatra such that they do the Gayatri japam on Ganesh Chaturti