Answer

Yes, in common Jain practice, Chauvihar Paccakhkhān is ideally taken before sunset.

Explanation

• Chauvihar means avoiding all food and water after sunset until sunrise.
• Since the vow begins with the sunset period, it is best to take the Paccakhkhān before sunset.
• If someone forgets, the proper spirit is still to stop eating and drinking after sunset and observe the restraint sincerely.

Spiritual Understanding

In Jain Dharma, the main purpose is careful self-restraint and protection from harm. Taking Paccakhkhān before sunset helps a person enter the vow with full awareness and discipline. It supports vigilance, purity, and respect for the vow.

Takeaway

Ideally, yes — take Chauvihar Paccakhkhān before sunset. If it is missed, still begin observing Chauvihar from sunset onward with sincerity.