Chaumasi Pakhi (Pakhi Pratikraman) is the fortnighly Pratikraman done once in every lunar fortnight.

• When: on the 14th day (Chaturdashi) of each lunar fortnight. In practice, this means roughly twice a month, about every two weeks.
• Why it matters: it’s a focused chance to repent for faults in that fortnight and renew vows, within the Chaumasi/Chaturmas practice.

Key points from Jain practice:

• Pakhi Pratikraman is performed every fortnight (twice a lunar month). You can read more about how often Pakhi is done here.
• Chaumasi (Chaturmas) is the four-month period during the monsoon when Jains avoid travel and increase spiritual activities. It runs in a cycle of every four months.

If you want, I can help you calculate upcoming Chaumasi Pakhi dates for your locality using the local lunar calendar. You can read more here