Do you mean “Paryushan” (Paryushana/Pajjusan)?

• When it happens each year:

- Shwetambar tradition: 8 days in the lunar month of Bhadrapada (Aug–Sep), ending with Samvatsari, the Day of Forgiveness (Michhami Dukkadam). - Digambar tradition: 10 days called Das Lakshan Parva, beginning right after the Shwetambar Samvatsari and ending on Anant Chaturdashi; Kshamavani (forgiveness day) follows as per the traditional calendar.

• Time of day (common practice):

- Daily pratikraman and pravachan are usually held in the morning and evening. - On Samvatsari (Shwetambar), the long pratikraman is commonly performed in the afternoon/evening. - Local sangh timings can vary, so follow your temple’s schedule.

If you wanted the specific dates for this year in your location, please check your sangh’s Panchang or the detailed notes here .