Answer

Bhagwan Mahavir Swami was traditionally born on Chaitra Shukla Trayodashi, which is generally dated to 599 BCE.

Explanation

In Jain tradition, his birth is celebrated as Mahavir Janma Kalyanak. The exact date is given according to the Jain lunar calendar, so it is usually expressed both in traditional tithi and in BCE years.

Spiritual Understanding

Mahavir Swami’s birth is deeply revered because it marks the arrival of a great Tirthankar who showed the path of ahimsa, truth, non-possessiveness, and self-discipline.

Takeaway

For devotees, the most important remembrance is not only the date, but the sacred life and teachings of Bhagwan Mahavir.