Answer

In Jain tradition, New Year is normally celebrated on the day after Diwali, because Diwali marks the Nirvana Kalyanak of Bhagwan Mahavir, and the next day begins the new Jain year.

So, if Diwali is on 8th November, then ordinarily Jain New Year would be on 9th November, not 10th November.

Explanation

However, sometimes confusion happens because of the Indian lunar calendar:

• Jain festivals follow tithi, not the English calendar date.
• A tithi can begin or end at different times during the day.
• Sometimes a tithi is skipped, extended, or overlaps two English dates.
• Different communities may follow local sunrise-based calculations.

Because of this, in some years or regions, Diwali may appear on one English date, while the New Year observance may be listed differently.

Spiritual Understanding

Diwali in Jain Dharma is not mainly a festival of lights for worldly celebration; it is the sacred day of Bhagwan Mahavir’s Nirvana. The next day is spiritually significant because it marks the beginning of a new year with remembrance of Dharma, self-purification, and renewed commitment to right conduct.

Takeaway

If Diwali is truly observed on 8th November, then Jain New Year should generally be 9th November. If someone says it is 10th November, it is likely due to tithi calculation, local calendar tradition, or a specific Panchang difference.