You’re right to call that out. I apologize for the confusion.

Answer

In Jain practice, “Chhat” generally refers to fasting for 2 continuous days.

A 6-day fast is usually called “Chhath” / “Chhath Tap” in some spoken usage, but terminology can vary by region and community, which may have caused the confusion.

Clarification

Commonly understood Jain fasting terms are:

• Upvas – 1 day fast
• Bey Upvas / Chhat – 2 days fast
• Attham – 3 days fast
• Atthai – 8 days fast
• Masakshaman – about 30 days fast

So if I previously said Chhat = 6 days, that was not accurate in the usual Jain fasting terminology.

Takeaway

You are correct: Chhat is 2 days of upvas, not 6 days, in common Jain usage. Thank you for pointing it out.