Chaturmasya
चातुर्मास्य
Occasional rites tied to a calendrical occasion (new moon, full moon, season-change) — required when the occasion arises, not at will.
Category
Naimittika (occasional, calendar-bound)
Duration
4 seasonal parvas (Vaishvadeva, Varuna-praghasa, Saka-medha, Sunasiriya) spaced across the year
Priests required
4 ritviks
Purpose
A linked sequence of four seasonal yajnas marking the joints of the Vedic year — performed at the start of spring, the rains, autumn, and the cold season. Together they consecrate the agricultural cycle and renew the householder's fitness for further Shrauta performance.
Deities invoked
- • Agni
- • Soma
- • Vishnu
- • Indra
- • Vaishvanara
- • Maruts
- • Varuna
Mantra source
Krishna Yajurveda Taittiriya Samhita 1.8, Shatapatha Brahmana 2.5, Apastamba Shrauta Sutra 8
Material offerings
- • Rice cakes (purodasha)
- • Barley flour cakes (saktu)
- • Ghee
- • Curd
- • Sour milk
- • Specially prepared karambha (mixed grain offering)
Items listed are those prescribed in the Shrauta texts. This page does not provide procedural instruction.
Modern status
Rare in living tradition
The Shrauta form is performed only by a handful of living agnihotri families. The name and seasonal framework, however, survive vigorously in the Vaishnava and Smarta Chaturmasya vrata observed each year between Ashadha and Kartika, which is a devotional descendant rather than a continuation of the Vedic rite.
Historical significance
The Chaturmasya is one of the earliest agricultural ritual cycles attested in Indo-Aryan tradition, embedding the four-season calendar into the Shrauta liturgical year and providing the structural template for many later vrata-based seasonal observances.