Answer

Kali Chaudas is observed on the 14th day of Krishna Paksha in the month of Aso / Kartik, one day before Diwali.

In Jain tradition, this period is connected with the sacred remembrance of Bhagwan Mahavir’s final teachings before Nirvana, which occurred on Diwali.

Explanation

Kali Chaudas comes just before Diwali. In the Jain understanding of Diwali:

• Diwali marks the Nirvana Kalyanak of Bhagwan Mahavir.
• The day before Diwali is spiritually important as a time of reflection, restraint, and preparation.
• Many Jains use this time for prayer, introspection, and turning inward rather than worldly celebration.

Takeaway

Kali Chaudas is the day before Diwali, observed on Aso/Kartik Krishna Chaturdashi, and for Jains it is best approached with spiritual reflection and preparation for Bhagwan Mahavir’s Nirvana day.