Answer

The division of Jainism into the two main panths, Digambara and Śvetāmbara, did not happen on one exact day. The Śvetāmbara tradition gives the schism date as 83 CE, but many scholars say the differences developed gradually and became fully established around the 5th century CE, especially after the Valabhi council. ( britannica.com)

Explanation

Some Jain traditions also connect the split to the period after Bhadrabahu and the north–south migration in the 3rd century BCE, but historically the division seems to have crystallized over several centuries rather than at one single moment. ( jainpedia.org)

Takeaway

So the short answer is: the division was gradual, with traditional dates like 83 CE, but the final separation is usually placed around the 5th century CE. ( britannica.com)