Answer

The day of breaking an Athai fast is called Parna or Pāraṇā.

In Jain tradition, after completing 8 days of fasting, the fast is broken on the next day in a proper and respectful way.

Explanation

Athai means fasting continuously for 8 days. After the 8th day is completed, the person does Parna the next day, usually by taking suitable food or drink according to Jain practice and health condition.

Parna is not considered just “eating again”; it is a mindful completion of the tapasya.

Spiritual Understanding

The purpose of Athai is not only physical fasting, but inner purification through:

• self-control,
• reduction of attachment,
• repentance for past karmas,
• devotion and spiritual discipline.

Parna marks the respectful completion of that austerity.

Takeaway

The day of breaking the Athai fast is called Parna / Pāraṇā.