Here is a simple, clear Jain calendar snapshot for 2025 (dates are approximate and may vary by local sangh calendars; check your temple or local panchang for exact days).

Key observances in 2025

• Chaturmāsa (Chaumasa) start and end

- Start: 6 July 2025 - Ends: around 3 November 2025

• Chaturanga/Chaumasa context

- This is the four-month monsoon period when monks stay in place and lay followers intensify practice.

• Paryushan Parva (Śvetāmbara)

- Start: 21 August 2025 - End (Samvatsari, Forgiveness Day): 28 August 2025

• Paryushan Parva (Digambar, Das Lakshan Parva)

- Start: 29 August 2025 - End: 7 September 2025 - Kshamavani (forgiveness day, often observed next day in many communities): around 8 September 2025

• Paryushan days overview

- Śvetāmbara Paryushan: 8 days (21–28 Aug 2025) - Digambar Paryushan: 10 days (29 Aug–7 Sep 2025)

• Oli (Navapana/Navpad Oli) in Ashwin year

- Roughly: 29 September 2025 to 7 October 2025 (dates vary by local panchang)

• Additional notes

- Local sangh calendars can shift dates by a day or two depending on lunar calculations. - If you need, I can give you a city-specific list once you tell me your city or sangh.

You can read more here , and here , and here .