Answer

Bad / Posh Dashmi means Posh Vad Dashmi — the 10th day of the dark half of the Posh month, associated with Bhagwan Parshvanath Janma Kalyanak.

For India-based Jain calendar observance:

• 2026: Sunday, 4 January 2026
• 2027: Sunday, 24 January 2027

Note

Dates can vary slightly by location and local sangh calendar because Jain tithi observance depends on sunrise and local panchang calculation. For temple rituals or ayambil/upvas, please confirm with your local Jain sangh calendar.