Vamana Jayanti (Vamana Dwadashi) marks the birth anniversary of Lord Vishnu's fifth avatar — the Vamana avatar — celebrated on Dwadashi in the Shukla paksha of Bhadrapad. Vamana is Vishnu's 5th avatar (Dashavatara) and the first avatar of the Treta Yuga (after Narasimha) — regarded as Vishnu's first avatar in human (dwarf) form. He was born to the sage Kashyapa and Goddess Aditi — hence Vamana is one of the Adityas, Indra's younger brother (Upendra). In 2026, this tithi falls on Wednesday, 23 September. The day before (22 September) is Parivartini Ekadashi — a separate vrat; don't confuse the two.
After Matsya, Kurma, Varaha, and Narasimha, Vamana is the 5th Dashavatara and the first of the Treta Yuga — Vishnu's first avatar in human form. This Jayanti marks the remembrance of that avatar's descent.
By tradition, Vamana was born on Bhadrapad Shukla Dwadashi during Shravan Nakshatra, at midday (Abhijit muhurat) — when Shravan Nakshatra coincides with Dwadashi, it's considered especially auspicious, and the Jayanti's significance increases (in 2026, Shravan Nakshatra does coincide). Since the exact birth/muhurat time depends on that date's panchang, only "midday" is stated here.
After the demon king Bali conquered the three worlds, Vishnu took the form of Vamana to restore the gods' (Indra's) heavenly kingdom and to dispel Bali's pride — but he also honoured Bali's generosity and devotion (granting him rule of Patal). This theme — that humility and devotion are supreme — is the core of this Jayanti.
By belief, worship/observance of the Vamana vrat is said to cleanse sin, bring Vishnu's grace, and fulfil wishes; Bali's legend teaches the renunciation of ego and humility — this is presented here as religious belief per Puranic tradition, not as a universal prescription.
Vamana Jayanti (Dwadashi) falls in the final stretch of Ganeshotsav — just two days before Anant Chaturdashi/visarjan (Chaturdashi, 25 September). The day before is Parivartini Ekadashi (Ekadashi).
The demon king Bali (a descendant of Prahlad, a Vishnu devotee but ambitious) conquered the three worlds; the gods (Indra) lost their heavenly kingdom. To protect the gods, Vishnu took the Vamana (dwarf-Brahmin) avatar, born to Aditi and Kashyapa.
During a yajna/charity occasion, the young Vamana approaches Bali and asks for three paces of land as alms; ignoring his guru Shukracharya's warning, Bali grants the wish. Vamana immediately takes on the cosmic Trivikrama form — with one step covering the earth, and the second covering heaven and the higher realms. No place remains for the third step; Bali humbly offers his own head. Vishnu places the third step on Bali's head and sends him to Patal/Sutal loka.
Pleased with Bali keeping his word, his generosity, and his devotion, Vishnu grants him rule over Patal; some versions also describe a boon of always being present at his door as a gatekeeper. The message: the destruction of ego, alongside the glorification of humble devotion. Within this narrative tradition, the legend is said to have been told by Lord Krishna to King Yudhishthira.
The Vamana legend appears across many scriptures — the Rigveda, various Brahmanas, the Mahabharata, and the Puranas (especially the Bhagavata) — no single text is presented here as "the" definitive source. Some versions explicitly describe Vishnu remaining at Bali's door as a gatekeeper; others simply say "he was granted rule of Patal" — the core (the grant of a kingdom, alongside the glorification of humility) remains the same, with the gatekeeper detail noted only as appearing "in some versions." Bali is also known as "Mahabali," especially in Kerala tradition.
Vishnu/Vaishnav devotees — Vamana Jayanti is chiefly a Vaishnav avatar-jayanti; Vishnu devotees and many Vaishnav families worship/observe a vrat for the Vamana form. For those who observe avatar-jayantis (Ram Navami, Narasimha, Parshuram, Krishna Janmashtami), Vamana Jayanti is one in that series. Because of the legend's sentiment (the destruction of ego, humble devotion, cleansing of sin), this vrat is observed with that intent.
Fasting is optional — a waterless fast isn't suitable for everyone; if a strict fast isn't advisable for health or medication reasons, follow your doctor's or an expert's guidance rather than a fixed diet.
Since Vamana Jayanti is an annual birth-jayanti vrat, a separate udyapan ceremony is not generally observed.
The panchang separately records "Dadhi-daan, Ksheer-vrat, Shravan-upavas" on this same day — these are co-observances tied to the Shravan-Dwadashi yog; treat this as "on this day, Dadhi/Ksheer-daan and Shravan-upavas are also prescribed for Shravan Dwadashi" as a co-occurring detail, not as a mandatory part of the Vamana puja itself.
A Vamana (dwarf-Brahmin) murti or a Vishnu image/Shaligram, a chaurang or wooden plank, a kalash, rice, clean cloth, sandal paste-turmeric-kumkum-akshata, tulsi leaves, yellow flowers/garland, incense-lamp-nirajan (ghee), panchamrit (for the abhishek), fruit-naivedya, the Vishnu Sahasranama/legend text, and rice/curd/mishri, food-cloth-dakshina for charity.
Some devotees keep a strict fast (waterless or water-only), others eat only fruit (milk, fruit, sabudana-type fasting foods). Grain, rice, legumes, onion-garlic, and tamasik/non-vegetarian food are avoided. The fast is broken the next day, or at the appropriate time, with prasad after the puja and legend — check the 23 September page for the exact timing.
The main Vishnu chant "Om Namo Bhagavate Vasudevaya" (a twelve-syllable Vishnu mantra; meaning: salutations to Bhagavan Vasudeva) is chanted during the Vamana puja. Recitation of the Vishnu Sahasranama (Vishnu's thousand names) is also prescribed.
Maharashtra: Vamana Jayanti is a pan-India Vaishnav avatar-jayanti. No independent source was found describing a distinct, widely prevalent public festival custom (a major pilgrimage/specific naivedya) tied to this day in Maharashtra, so no such claim is made here. This page's contextual distinctiveness is the Ganeshotsav bracket (two days before Anant Chaturdashi visarjan) and the preceding day's Parivartini Ekadashi.
In some traditions — especially Kerala's Onam — the Vamana avatar is connected to Bali's (Mahabali's) legend; by belief, Vishnu granted Bali the boon of visiting his subjects once a year, and Onam is regarded as that occasion of return. This "annual return" detail is contested — Wikipedia itself notes that no such account is found in the Mahabharata. So this is recorded here lightly, as "in some traditions/per the Kerala Onam legend," not as a universal fact. No independent source was found showing the Onam custom is observed in Maharashtra.
In North India, Vishnu puja is performed as "Vamana Dwadashi"; the neighbouring Parivartini/"Jalzhulani/Dol Gyaras" Ekadashi custom (water-play with the deity's murti) is prevalent.