Pavitra Baras (Pushtimarg Pragatya Divas)
What it is
Pavitra Baras falls on Shravan Sud 12, and it is one of the most quietly important days in Pushtimarg, even though it is not Shri Mahaprabhuji's own birth (that is Vaishakh/Chaitra Krishna Ekadashi, his Pragatya Utsav). This is the day Shri Vallabhacharya gave Brahmasambandh, the very initiation that defines Pushtimarg, for the first time — to Shri Damodardas Harsaniji, his first disciple, at Gokul. In gratitude and reverence, Damodardasji adorned his Guru with a pavitra, a thread of woven cotton, an act that gave the day its name and became the tradition every Vaishnav still keeps: offering a pavitra to one's own guru, or to Vallabhkul, on this day, along with mishri as a sweet offering.
Some calendars mark this day, rather than his birth, as "Pushtimarg Pragatya Divas" — the day Pushtimarg itself came into practice, not merely into being.
Why we observe it
The distinction matters: Shri Mahaprabhuji's own Pragatya Utsav celebrates that he was born; Pavitra Baras celebrates that Pushtimarg actually began working the way it still does today — a guru giving Brahmasambandh, and a disciple answering with an offering of devotion. Every Vaishnav who has ever taken Brahmasambandh stands in a line that starts exactly here, with Damodardasji at Gokul.
Offering the pavitra thread is traditionally done before Rakshabandhan (extending, if needed, until Janmashtami), and the gesture itself carries the day's whole bhav: a devotee binding themselves, visibly and simply, to their Guru and through their Guru to Shrinathji, in thanks for a gift — the marg itself — that changed everything.