Jainism
According to Jain traditions, it was on this day, falling at the beginning of chaturmas, the four month rainy season retreat, Mahavira, the 24th Tirthankara, after attaining Kaivalya, made Indrabhuti Gautam, later known as Gautam Swami, a Ganadhara, his first disciple, thus becoming a Guru himself, therefore it is observed in Jainism as Guru Purnima, and is marked special veneration to one's Gurus and teachers.
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