Posh Dashmi (Poṣa‑daśamī) is the birth anniversary of Parśvanāth and is observed on the Dashami (tenth day) of the Poṣha/Māgsar period in the Jain calendar. The exact Gregorian date changes every year because it depends on the lunar sighting and regional panchangs.

For 2025:

• Posh Dashmi is expected around December 14, 2025 (Vad Dashami). Some regions may show a one‑day variation. Always check your temple’s calendar or your regional Jain panchang for the precise date. Some Digambar/Shvetambar calendars may differ slightly in the observed date, but the essence of Poṣa‑daśamī remains the same. You can read more here.