In Jainism, Pratikraman is mainly linked to time of day and frequency.

1. Daily Pratikraman (most important for a shravak)

• Raisi / Raishi (Morning Pratikraman)

- Done in the morning after sunrise, ideally within the first prahar (about 3 hours after sunrise). - Meant for mistakes done during the previous night.

• Devasi (Evening Pratikraman)

- Done at sunset or soon after, usually within about 48 minutes after sunset. - Meant for mistakes done during that day.

Many lay Jains try to do both – morning and evening – every day.

2. If daily is not possible Traditional guidance is step‑down like this:

• Pakshi (Fortnightly) Pratikraman – at least once every 15 days.
• Chaumasi (Four‑monthly) Pratikraman – at least once in 4 months.
• Samvatsari (Yearly) Pratikraman – must do at least once a year on Samvatsari/Kshamavani.

3. Real principle Ideally, Pratikraman should be done as soon as you realize a mistake – not only by clock rule. The fixed times (morning/evening, pakshi, etc.) are to ensure we don’t keep delaying repentance.

You can read a simple explanation of “when Pratikraman should be done” here

And a basic overview of Pratikraman itself here