Answer

Rai Pratikraman is performed in the morning, after sunrise, as the daily morning Pratikraman.

It is generally done during the early morning period, preferably after completing morning cleanliness and before becoming deeply involved in worldly activities.

Explanation

In Jain practice:

• Rai Pratikraman is the morning Pratikraman.
• Devsi Pratikraman is performed in the evening.

Rai Pratikraman is meant for reflecting on faults, carelessness, or violations that may have occurred during the night, and for seeking forgiveness with repentance.

Takeaway

The best time for Rai Pratikraman is early morning after sunrise, with a calm mind and sincere bhav of repentance, forgiveness, and spiritual awareness.