Jain Dharma does not have one single universally fixed list of festivals, because practices vary a little by Digambar and Shwetambar traditions, as well as by region. But the major Jain festivals and observances include:

Major Jain festivals

1. Paryushan Parva

- The most important Jain observance of self-discipline, fasting, prayer, repentance, and forgiveness. - In Shwetambar tradition, it is called Paryushan. - In Digambar tradition, it is called Das Lakshan Parva.

1. Samvatsari

- The last day of Paryushan in Shwetambar tradition. - It is the day of micchami dukkadam and asking forgiveness from all living beings.

1. Das Lakshan Parva

- Celebrated in Digambar tradition. - Focuses on the ten supreme virtues: Kshama, Mardava, Arjava, Shaucha, Satya, संयम, Tapa, Tyaga, Akinchanya, Brahmacharya.

1. Mahavir Jayanti

- Birth anniversary of Lord Mahavir, the 24th Tirthankar.

1. Nirvan Divas / Diwali

- Celebrates the moksha (liberation) of Lord Mahavir. - For Jains, Diwali is especially a sacred remembrance of Mahavir’s nirvan.

1. Kartiki Purnima / Gyan Panchami

- Observed in some traditions as a day of knowledge worship, scripture reverence, and spiritual merit.

1. Akshaya Tritiya

- Important especially for remembering Lord Rishabhdev’s first ahar after long tapas. - A day of charity and devotion.

1. Maun Agiyaras

- A day of silence, introspection, and restraint. - Observed in some Jain traditions.

1. Varshitap Parana

- The completion of the year-long austerity of Lord Rishabhdev’s tapas is remembered with devotion, especially in connection with Akshaya Tritiya.

1. Rath Yatra of Jain Tirthankars

- In some places, processions are held during festivals or temple events as a devotional observance.

Other important observances

• Jnan Panchami – worship of knowledge and scriptures
• Sthanakvasi/ Terapanthi observances may emphasize different fasting and spiritual days
• Chaturmas – the sacred four-month period of restraint, fasting, study, and spiritual practice

In short

• Paryushan / Das Lakshan
• Samvatsari
• Mahavir Jayanti
• Diwali / Mahavir Nirvan
• Akshaya Tritiya
• Gyan Panchami

If you want, I can also give you a calendar-wise list of Jain festivals month by month in a simple format.