Understanding the Jain Calendar & Mahavira Nirvana Samvat (MNS)
The Jain Panchang (also known as the Vira Nirvana Samvat or Mahavira Nirvana Samvat - MNS) is one of the oldest living chronological systems in India. It is anchored to the exact historical moment of Bhagavan Mahavira’s Kevala Nirvana (liberation) at Pavapuri on the night of Diwali in 527 BCE. The new Jain year commences on Kartak Sud Ekam, the morning following Diwali.
The Sacred Parva Tithis (Aatham, Chaudas, Punam, Amas)
In Jain ethics and spiritual practice, days are classified based on their spiritual intensity. Specific lunar days are designated as Parva Tithis, during which Jains observe rigorous vows of non-violence, fasting, and self-restraint:
- Ashtami (Aatham - 8th Tithi): Observed in both Sud and Vad fortnights. Shravakas avoid green vegetables (Leelotri tyaga), consume boiled water, and practice Upvas (complete fasting) or Biyashana (eating twice).
- Chaturdashi (Chaudas - 14th Tithi): Dedicated to profound spiritual introspection, self-study (Swadhyaya), and preparation for forgiveness.
- Purnima (Punam) & Amavasya (Amas): Peak lunar transition points where sensory indulgence is minimized and meditation is amplified.
Pachakhan Timings: Navkarshi, Porsi, and Chauvihar
A core practical pillar of the daily Jain Panchanga is determining Pachakhan timings—the formal vows taken regarding food and water:
- Navkarshi: Taking food or water exactly 48 minutes (2 Ghadis) after local sunrise, allowing solar energy to cleanse subtle organisms from the atmosphere.
- Porsi: Taking food 3 hours (one Prahar or 1/4th of the daylight) after sunrise.
- Chauvihar: Renouncing all four forms of nourishment (food, liquids, snacks, and mouth fresheners) prior to sunset until the following morning's Navkarshi.
Major Jain Parvas: Paryushana, Das Lakshana, and Ayambil Oli
The Jain calendar highlights sublime festivals of collective penance. In the month of Bhadrapada (Bhadarvo), Shvetambaras observe the 8-day Paryushana Parva culminating in Samvatsari and universal forgiveness (*Micchami Dukkadam*), while Digambaras observe the 10-day Das Lakshana Parva meditating on the ten cardinal virtues of the soul. Additionally, twice every year in Chaitra and Ashwina, Jains observe the 9-day Shashwata Navapad Ayambil Oli, consuming food prepared without oil, ghee, sugar, milk, curd, or fried spices to master sensory detachment.
Decades of Precision
Proprietary ephemeris active since 2004 computing precise local sunrise offsets and Tithi boundaries.
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Engineered strictly under Jain Agama chronology and classical Surya-Prajnapti principles.