Pakkhi / Chaudas Pratikraman is generally observed on Chaturdashi (14th tithi), twice in each lunar month. In the 2026 India/Chennai panchang, the Chaturdashi dates include: January 1, January 16, January 31, February 15, March 1, March 17, March 31, April 15, May 15, June 14, July 13, August 11, September 25, October 9, November 23, and December 7. ( prokerala.com)

These are tithi-based dates, so the exact day can vary a little by location and Jain panchang tradition. For the most exact observance, follow your local Jain panchang. ( prokerala.com)