Shri Datta (Dattatreya) is regarded as the combined form of the Trimurti — Brahma, Vishnu, and Mahesh — and a symbol of guru-tattva (the guru principle); the son of sage Atri and Sati Anasuya. Datta Jayanti falls on Margashirsh Purnima; Datta's birth is held to have occurred in the evening, during the pradosh period, under the Mrig nakshatra, which is why the puja is performed in the evening. This year (2026): Wednesday, 23 December.
Maharashtra observes this day with great devotion. The Datta kshetras of Audumbar, Narsobawadi, and Ganagapur hold special significance, preceded by Gurucharitra saptah (a seven-day recitation) and Datta Navratri.
Since Datta is the combined form of three deities, worshipping Datta is regarded as worship of the Trimurti; he is considered the Adi-Guru (the first guru) or Avadhuta, and the embodiment of guru-tattva.
Datta is held to have learned from 24 gurus in nature — the earth (patience), the bee, the python, the ocean, and others. This story, from the Yadu-Avadhuta dialogue in the Bhagavata Purana, makes Datta a symbol of the teaching "learn from everyone."
An important text in this guru lineage is the Shri Gurucharitra (roughly 15th century, composed by Saraswati Gangadhar); it describes the lives of Shripad Shrivallabh (the first avatar) and Narasimha Saraswati (the second avatar).
By tradition, worship of Datta is believed to bring peace in life; some sources also mention that it "reduces pitru-dosh" (an ancestral affliction) — but since this is a single-source astrological claim, it's best stated as a matter of faith, not fact.
Sage Atri's wife, Sati Anasuya, was known for her extraordinary devotion to her husband. Narada praised her chastity before Saraswati, Lakshmi, and Parvati. The three goddesses wished to test her, and sent their own husbands — Brahma, Vishnu, and Mahesh — to her ashram in the guise of wandering ascetics, who set her an impossible condition. Anasuya, through the power of her penance, turned the three into infants and completed the condition by nursing them — her devotion remained unbroken. Pleased, the gods offered her a boon; Anasuya asked, "become my own sons." From this, Datta's birth is held to have occurred — on Margashirsh Purnima, in the evening, under the Mrig nakshatra.
Tradition genuinely diverges on how the divine essence divided, and no one version is treated as final here. In some versions, all three deities entered Anasuya's womb combined as a single form — this became the three-faced (trimukhi) Dattatreya. In other versions, Anasuya bore three sons: Chandra/Som (Brahma's portion), Dattatreya (Vishnu's portion), and Durvasa (Shiva's portion); of these, Dattatreya, as Vishnu's portion, later came to be regarded as the combined guru-form of all three principles.
Especially Datta devotees and families within the Datta sampradaya; in many households it is observed as a kuladharma (family custom). It is widely observed across Maharashtra, and anyone can take part.
The order below is a researched general practice; details vary by tradition.
Where a Gurucharitra saptah is observed, the recitation concludes on Datta Jayanti with a mahaprasad or food-offering; the exact concluding rite varies by tradition.
An image or idol of Datta, a red cloth, a copper vessel or kalash of water, sandalwood paste-akshata-turmeric-kumkum, flowers, tulsi, bel leaves, incense, an oil or ghee lamp, camphor, sunthavda (a dry-ginger and sugar preparation) and jaggery-fruits for naivedya, and the Gurucharitra text for recitation.
Many devotees observe a day-long fast on Datta Jayanti, breaking it after the evening puja. The rules for Gurucharitra recitation or its seven-day saptah vary by tradition — sovale-ovale (ritual purity), sattvic food, a fixed time and place, celibacy, sleeping on the floor, and not breaking the reading midway are commonly mentioned general rules; details vary by source, and these aren't presented as universal.
The guru mantra or japa "Om Draam Dattatreyaya Namah" is a seed-mantra saluting Datta, chanted one mala during recitation or japa. The popular refrain "Digambara Digambara Shripadavallabha Digambara" invokes Datta and his avatars. The aarti's opening line runs "Jai Dev Jai Dev Jai Shri Gurudatta…" — its sense is an invocation of victory and surrender to Guru Datta.