Digambar Jains (Das Lakshan Parva): Paryushan lasts 10 days, starting on 28 August 2025 and ending on 6 September 2025. The tenth day (Dashmi) falls around 5 September 2025, with the forgiveness day (Kshamavani) commonly observed on 8 September 2025. You can read more here
Shwetambar Jains: Paryushan lasts 8 days, typically from 21 August 2025 to 28 August 2025, ending with Samvatsari (the day of forgiveness) on 28 August 2025. If you’re specifically looking for Dashmi in Shwetambar practice, note that the eight-day version does not call the last day “Dashmi.” You can read more here