Following the Shwetambar tradition, chiefly Acharya Shri Hemchandracharya's Trishashti Shalaka Purush Charitra and the Kalpasutra. Kalyanak tithis are in Gujarati months.
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In a former life he was a king in Mahavideh who took diksha and, through the aradhana of the twenty sthanak, bound the Tirthankar naam karma; he was then born as a dev in the higher devlok.
On Fagan Sud 2 his soul came into the womb of Queen Devi, wife of King Sudarshan of Hastinapur, and she saw the fourteen great dreams.
The tradition says that his mother dreamt of a jewelled spoke (ara) of a wheel, so he was named Ar. His chinh is the nandavarta.
He was born on Magshar Sud 10, and the Indras celebrated the janmabhishek on Meru.
Arnath was the seventh chakravarti and the eighteenth Tirthankar, the last of the three who held both titles: Shantinath, Kunthunath and Arnath.
After the Lokantik devs came to request him and a year of varshidaan, he took diksha on Magshar Sud 11 with a thousand kings.
He attained kevalgyan on Kartak Sud 12; the devs built the samavasaran and the fourfold sangh was set up.
On Magshar Sud 10 Shri Arnath attained nirvan on Sammet Shikhar.