If you mean Jain Shwetambar Murtipujak Choumasa, the start date in 2026 is 20 July 2026, Monday — Ashadh Shukla Chaturdashi. In that 2026 Jain calendar, the Chaturmas period continues into November 2026 for the usual monastic stay. ( jainkart.in)
Explanation
Jain calendars can vary a little by tradition and local panchang, but for the Shwetambar / Murtipujak line, 20 July 2026 is the commonly listed Chaturmas beginning date. ( jainkart.in)
Spiritual Understanding
Choumasa is a very sacred time in Jain Dharma for sadhana, swadhyay, samayik, fasting, and inner discipline. It is especially important because monks and nuns remain स्थिर in one place during the rainy season, following the principle of ahimsa. ( jainkart.in)
Takeaway
Murtipujak Choumasa 2026: 20 July 2026. ( jainkart.in)