Posh Dashmi (Poṣh‑daśamī) is a Jain festival that honors the birth of Lord Parshvanath, the 23rd Tirthankar. It is traditionally celebrated on the 9th, 10th, and 11th days of the dark half of the Poṣha/Māgsar month. The exact Gregorian date shifts each year due to the lunar calendar, so local temple calendars or regional Jain panchangs should be checked for the precise days. The festival is observed with devotion to Parshvanath, listening to his life stories, and performing prescribed rites and fasting that help purify the mind and advance spiritual progress. On these days, a common practice is a 3-day tap (ascetic effort) that may include fasting, devotional worship, and recitation. The aim is to cultivate peace, self-discipline and spiritual awakening, ultimately leading toward moksha. This festival is observed by both Digambar and Śvetambar traditions, though dates and minor ritual details can vary by region.

Key points in very simple terms:

• It marks the birth anniversary of Parshvanath.
• Observed over 3 days (usually around the 9th–11th of Poṣh/Māgsar), with variations by region.
• Commonly includes Parshvanath puja, listening to his life, Navkar mantra recitation, and a form of tap or fasting.
• The spiritual aim is inner purity, calm, and eventual liberation.

About images:

• You can find image-filled explanations and event descriptions on JainKnowledge pages that discuss Poṣha‑daśamī and the Attham Tap. You can read more here and here .

If you want, I can help locate a specific date for your city or temple using JainKnowledge pages.