Gautam Swami (Indrabhuti Gautam) is Mahavira’s chief disciple (Ganadhara). He is revered as the first Ganadhara and is closely associated with the spread of Mahavira’s teachings. There are variations in dates and details between Digambar and Śvetāmbara traditions, but the core idea remains: Gautam Swami played a central role in guiding the Jain community after Mahavira. ( en.wikipedia.org)

Kalyanak of Gautam Swami refers to key auspicious events in his spiritual life, celebrated by Jains. The two main Kalyanaks are:

• Diksha Kalyanak (initiation into monkhood)

- What it is: Gautam Swami renounced worldly life and became a Jain monk under Mahavira. - Tithi: Kartik Shukla Dashami (the 10th day of the bright half of Kartik). - Significance: Marks the moment Gautam Swami began his spiritual path as a monk. - You can read more here

• Keval-gyan Kalyanak (attainment of kevala jnan, omniscience)

- What it is: Gautam Swami attained kevala jnana after Mahavira’s nirvana. - Timing: Traditionally celebrated around the period after Diwali; the exact day is tied to the Jain calendar and varies by tradition. - Significance: Represents the moment he achieved supreme knowledge. - You can read more here

Notes on tradition:

• There are small chronological differences between Digambara and Śvetāmbara accounts regarding Gautam Swami’s life and dates, but both traditions honor his Diksha and Kevaljnana Kalyanaks as important milestones. If you’d like, I can summarize the differences between the two branches. ( jainknowledge.com)

If you want, I can provide more details from these Jain Knowledge pages or summarize the stories and prayers associated with these Kalyanaks.