Kartik Purnima is the full moon of the Hindu month of Kartik, observed in 2026 on Tuesday, 24 November. It is one of the three highest-merit Purnimas in the Hindu calendar (alongside Vaishakha Purnima and Magha Purnima), known by several names that each pick up a different strand: Tripuri Purnima (Shaiva), Dev Diwali (Varanasi), Kartikai Deepam (Tamil Nadu), Karthik Snan (north Indian Vaishnavas, who end a month-long vrat on this day), and Guru Nanak Jayanti (Sikh tradition observes the birth of Guru Nanak on this Purnima). The Purnima tithi in 2026 begins on the evening of 23 November and ends on the evening of 24 November.
Why this Purnima specifically
Three layered associations sit inside the day:
- Tripurasura vadha. The Shaiva tradition holds that Shiva destroyed Tripurasura, the demon ruling three flying cities, on this Purnima. The Matsya Purana and the Linga Purana both narrate the episode. Hence the name Tripuri Purnima and the older Tripurari Purnima (“the destroyer of Tripura”). The lighting of lamps at temples and ghats commemorates the celebration of the gods at the victory.
- Vishnu’s Matsya avatar. The Vaishnava tradition associates the day with the manifestation of Vishnu as Matsya, the fish, who saved the Vedas from the cosmic flood. This is the first of the dashavatara. Kartik is treated as Vishnu’s month, and the full moon closes a month of intensified Vaishnava observance.
- Kartikeya’s birth. Some Puranic sources, the Skanda Purana especially, place the birth of Kartikeya, the son of Shiva, on this day; hence the Tamil festival of Kartikai Deepam falling close to this date, when lamps are lit on hills and rooftops in his honour.
The dense convergence of stories on a single tithi is why the day is treated as one of the year’s high observance points.
The Kartik Snan tradition
Through the whole of the Hindu month of Kartik (mid October to mid November, but the exact Gregorian window shifts), observant Vaishnavas perform Kartik Snan, a daily pre-dawn bath in a sacred river or, where that is not possible, at home with water mixed with a few drops of Gangajal. The vrat is closed on Kartik Purnima with a full bath at a major tirtha, ideally in the Ganga, Yamuna, Sarayu, Godavari, Kshipra, Narmada, Kaveri, or in the precincts of a Vishnu temple’s pushkarini (sacred tank).
The Skanda Purana and the Padma Purana both list extensive merit for the Kartik Snan. The vrata is concluded on this day with a public bath, offering of lamps in the river (deepa daan), feeding of brahmanas and the poor, and gift of cows, cloth or grain. Pushkar in Rajasthan and Garhmukteshwar in Uttar Pradesh host the largest organised Kartik Snan fairs.
Dev Diwali in Varanasi
The Varanasi observance is the most visually distinct strand of the day. On the evening of Kartik Purnima, the eighty-four ghats of the Ganga at Varanasi are lit with lakhs of earthen lamps; the Ganga Aarti is performed simultaneously on multiple ghats; and the river itself is covered with floating diyas. The Tourism Department estimates that several hundred thousand visitors travel to Varanasi for the night. The boat ride from Assi Ghat to Rajghat between 5:30 PM and 7:30 PM is the standard way of witnessing the display.
The Dev Diwali narrative is layered onto the Tripurasura story: after Shiva’s victory, the devas (the gods) themselves come down to bathe in the Ganga and celebrate Diwali on the ghats. The popular reading treats it as the Diwali of the gods, fifteen days after the Diwali of humans.
Kartikai Deepam in Tamil Nadu
In Tamil Nadu the same day (or in some years the day after, when the Kartikai nakshatra falls on a different tithi) is observed as Kartikai Deepam. Householders light rows of clay lamps (agal vilakkus) on every floor of the house, on doorsteps, in courtyards, on rooftops, and on bunds along village streets. The largest single observance is at the Arunachaleshwarar Temple in Tiruvannamalai, where a giant cauldron of ghee is lit at the summit of Arunachala Hill at dusk; the flame burns through the night and is visible for many kilometres. The Tamil association is with Shiva manifesting as a column of fire (jyotirlinga) on Arunachala, the original story of the Lingodbhava form of Shiva, narrated in the Arunachala Mahatmya section of the Skanda Purana.
Guru Nanak Jayanti
Sikh tradition observes the birth of Guru Nanak (1469-1539 CE) on this Kartik Purnima. The day is the most important Gurpurab in the Sikh calendar; the Guru Granth Sahib is recited in akhand path (continuous reading) in the gurdwaras through the day, and prabhat pheri processions move through Sikh-majority neighbourhoods from the early hours. The Golden Temple at Amritsar is lit in the same manner as the ghats at Varanasi, with the Amrit Sarovar carrying floating lamps.
Pushkar Fair and the Kartik Mela
The Pushkar Fair in Rajasthan, anchored to Kartik Purnima, is the largest single Kartik Snan congregation in India alongside the Garhmukteshwar Kartik Mela in Uttar Pradesh. Pushkar’s sacred lake is one of only a handful of sites linked to Brahma worship in India (the temple at Pushkar is one of the few Brahma temples), and the bathing window from Ekadashi (five days before Purnima) through Purnima is treated as the most concentrated merit window. The fair runs in parallel as a camel and cattle market, drawing several hundred thousand pilgrims and traders.
What households do at home
For those not traveling to a tirtha, the home observance runs:
- An early pre-sunrise bath, with a few drops of Gangajal in the water if available.
- A Satyanarayan Puja with the Satyanarayan Katha read at evening; the Kartik Purnima is one of the four most-recommended dates for Satyanarayan Puja.
- Deepa daan: a row of lamps lit along the threshold, the tulsi vrindavan, and the household altar. Some households float a lamp on a leaf in a small pot of water as a household substitute for the river deepa daan.
- Donation of food, clothing, or grain to a household priest, a poor family, or a temple; the Padma Purana lists this as one of the highest-merit acts of the day.
- Light vegetarian satvik food; many households fast on milk and fruit until evening, breaking the fast after deepa daan.
For what it’s worth, the most rewarding way to spend the day if travel is not possible is to do the home deepa daan at exactly the right moment, just after sunset, in silence, before the lamps inside the house are switched on. The household becomes briefly lit entirely by oil lamps. The aesthetic of the festival depends on that specific moment.
Common questions
Is the date the same as Dev Diwali?
Yes. Dev Diwali in Varanasi is the local name for the evening of Kartik Purnima; the two are the same day. The 2026 date is 24 November.
Why is bathing in the Ganga specifically meritorious on this day?
The Padma Purana and the Skanda Purana both list specific multiplier effects for ritual baths on certain tithis; Kartik Purnima is the highest of these for the month of Kartik. The Vishnu Smriti and the Brahma Purana cite the same convention. The merit is theological rather than empirical; the tradition is consistent that a bath taken on this day with the right sankalpa is treated as equivalent to many ordinary baths.
Can the Kartik Snan be done at home?
Yes. The classical permission is to mix a few drops of Ganga water (Gangajal) into the bathing water and to recite the sankalpa naming the date, the month, and the deity. Households without Gangajal use water consecrated by chanting the river’s name; this is the practice in long-displaced Hindu households worldwide.
A limitation worth noting
Specific muhurats for ghat aarti times, Satyanarayan puja windows, and Pushkar Mela schedules are published by the relevant local authorities each year and shift within the day; this article does not quote individual minute-precise times because those drift between published panchangs. The dates above are the consensus dates; for hour-precise muhurats consult the local panchang at the time of observance. For wider context see the Wikipedia entries on Kartik Purnima and Dev Deepawali.
