Karthigai Deepam: The Story Behind Tamil Nadu’s Festival of Lights

As dusk settles over Tamil Nadu, tiny oil lamps begin to glow along doorsteps, windowsills, and courtyard walls, turning ordinary homes into pools of warm, flickering light. Karthigai Deepam, also known as Thirukarthigai, is a festival rooted in devotion, tradition, and the quiet beauty of lighting a flame. In 2026, it falls on 24 November. Celebrated during the Tamil month of Karthigai, the festival is associated with the full moon and the Krittika star cluster.

In Kerala, the corresponding observance is known as Thrikarthika. Across Chettinad, families continue to mark the occasion by lighting rows of traditional oil lamps at home, keeping alive a ritual that brings faith, family, and the gentle glow of tradition together.

What is Karthigai Deepam?

Karthigai Deepam is a traditional festival of lights celebrated by Tamil and Malayali communities, with deep roots in Tamil culture and Shaivite worship. Known as Thirukarthigai in Tamil Nadu, the festival is believed to date back to the Sangam Age (200 BCE to 300 CE). It finds mention in the works of the poet Avvaiyar, including the Akananuru, a Sangam anthology that refers to it as Peruvila. Unlike Deepavali, which celebrates different legends and traditions, Karthigai Deepam centres on the worship of Lord Shiva and the lighting of oil lamps in honour of the divine light. The observance spans 3 days in Tamil Nadu, with the evening of lamp-lighting remaining its most cherished ritual in many homes.

Hand holding a traditional clay lamp with colourful lights glowing softly in the background during Karthigai Deepam

When the Festival Falls: Karthigai Masam and the Full Moon

A couple of traditional oil lamps lit, facing towards the opposite direction during Karthigai Masam

Karthigai Masam, the Tamil month that lends the festival its name, spans November and December. Karthigai Deepam is observed on the full moon day when the Krittika nakshatra prevails, so its date shifts each year according to the lunar calendar and stellar alignment.

In 2026, Karthigai Deepam falls on Tuesday, 24 November. The Karthigai nakshatram begins at 4:32 AM that morning and ends at 1:55 AM on 25 November. This timing places the festival's principal lamp-lighting rituals on the evening of 24 November, when homes and temples glow with rows of traditional oil lamps.

Karthigai Deepam History: The Column of Light


The Karthigai Deepam history traces back to a legend in the Shiva Purana, where a dispute between Brahma and Vishnu leads to a revelation of Shiva’s infinite nature. When the 2 gods argued over who was supreme, Shiva appeared before them as a towering column of divine light that stretched across the 3 worlds. Neither could find its beginning or end. Vishnu took the form of a boar and dug deep into the earth, while Brahma transformed into a swan and flew towards the heavens. Brahma falsely claimed to have reached the top, earning Shiva’s curse that he would not be worshipped.

Traditional oil lamps for Karthigai Deepam in Tamil Nadu arranged in a star-shaped pattern, glowing against a dark background
A row of diyas or traditional lamps surrounded by flowers

Another strand of the festival’s mythology appears in the Tamil Kanda Puranam. According to this account, 6 sparks from Shiva became 6 infant boys, who were raised by the Krittika maidens. When Parvati embraced them, the boys united into a single deity with 6 faces: Kartikeya, worshipped as Murugan across Tamil Nadu. Shiva later blessed the 6 Krittikas with immortality, and they became the stars of the Pleiades cluster. These legends connect the festival’s celestial timing with its central theme: the divine light of Shiva and the enduring devotion it inspires.

Karthigai Deepam Significance: Light at the Threshold

The Karthigai Deepam significance lies in the symbolism of light overcoming darkness, a belief expressed through rituals that bring the festival into everyday household life. Homes are cleaned, and kolams, intricate patterns drawn on the ground, adorn entrances. Mango leaf festoons frame doorways, while rows of agal vilakku, traditional clay oil lamps, illuminate thresholds and courtyards as dusk falls.

For devotees, the observance also carries a personal dimension. Many observe a fast through the day, breaking it after sunset with special festive dishes. In some households, sisters fast and pray for their brothers' well-being, adding a note of familial devotion to the celebrations. Through these customs, Karthigai Deepam brings together spiritual faith, the warmth of home, and the enduring symbolism of a flame lit against the dark.

Ornate brass lamp surrounded by rows of glowing diyas in a festive setting for Thirukarthigai

Karthigai Vilakku: The Glow of Tradition

Rows of colourful oil lamps arranged on a bed of flowers during Thrikarthika

At the heart of Karthigai Deepam is the Karthigai vilakku, a traditional clay oil lamp lit in rows to welcome the festival's sacred glow. The lamps come in several forms, including the Lakshmi Vilakku, shaped like a woman with folded hands; the Kuthu Vilakku, designed around a 5-petal flower; and the Gajalakshmi Vilakku, featuring an elephant motif. Each brings its own detail to the ritual, while the rows of flickering flames create the festival's familiar warmth.

In Chettinad, the architecture lends this tradition a distinctive setting. The region's grand Chettiar mansions feature long verandahs, broad parapets, and open courtyards, offering ample space for lamps to glow in unbroken lines. In the courtyard of a Chettiar mansion, the sight of these small flames against the mansion's traditional architecture captures the quiet beauty of Karthigai Deepam.

What is Eaten After Sunset: Traditional Karthigai Deepam Dishes

Once the lamps are lit and the evening prayers are complete, families gather over traditional dishes to mark Karthigai Deepam. The day's fast ends with festive preparations, particularly sweets made with rice flour, jaggery, and ghee. Each dish brings a different texture and taste to the occasion.

  • Karthigai Addai: A savoury lentil pancake prepared with a spiced batter, adding a hearty counterpoint to the festival's sweet dishes.

  • Vella Seedai: Small rice-flour dumplings sweetened with jaggery and deep-fried until crisp, bringing a crunchy bite to the festive spread.

  • Adhirasam: A traditional Tamil sweet made with rice flour and jaggery, shaped into discs and fried until golden outside while remaining soft and dense within.

  • Pori Urundai: Puffed rice bound with melted jaggery to form crisp, sweet balls, a festive favourite closely associated with Karthigai Deepam.

  • Nei Appam: Small, soft fritters made from sweet rice batter and fried in ghee until golden, with a rich, gently caramelised edge.

Indian sweets and savouries served with a glass of milk beside festive decorations

Together, these dishes bring sweetness, warmth, and a sense of shared tradition to the evening, as families gather after the day's rituals to celebrate the festival.

Karthigai Deepam in Tamil Nadu and Chettinad

A view from below of Pillayarpatti Ganapathi temple's facade with numerous intricate small deities carved into the gopuram and blue sky in the background..

Karthigai Deepam in Tamil Nadu takes on a striking form at Tiruvannamalai, where a giant flame is lit atop Arunachala Hill. Visible for several kilometres, this beacon of fire recalls the legend of Shiva appearing as an endless column of light. In Chettinad, the observance takes a more intimate shape, with lamps glowing at household entrances and rituals continuing at the region's clan temples.

The 9 Chettiar clan temples, including Illaiyathangudi, Mathoor, and Pillaiyarpatti, hold a special place in Chettinad's religious life. Karthigai Deepam features among the festivals observed at Pillayarpatti Temple, where the temple's own account documents its lamp-lighting rituals. Together, these traditions show how the festival moves between grand public worship and the quieter observances that bring families and communities together.

Stay at Chidambara Vilas in Chettinad for Karthigai Deepam

Karthigai Deepam brings Chettinad's architectural heritage to life, with oil lamps illuminating courtyards, verandahs, and traditional doorways. At Chidambara Vilas, a restored Chettiar mansion in Pudukkottai built between 1897 and 1904, the Mugappu, Paadasalai, and Valavu preserve the distinctive layout of a traditional Chettiar home.

Choose from our 5 room categories, ranging from the 300 sq. ft. Heritage Standard Room to the 1,050 sq. ft. Heritage Luxury Suite, each retaining elements of the mansion's period architecture and craftsmanship. Our heritage resort also places the region's 9 Chettiar clan temples and Pillayarpatti Temple within easy reach.

Explore Chettinad's culinary traditions over a banana-leaf meal at Visiri Hall, where age-old Nagarathar dining customs shape the experience. Join a cookery class with local chefs to learn the techniques behind regional dishes. Beyond the table, take a guided tour of our 120-year-old mansion, walk through a heritage village, or try traditional kolam drawing. Each experience brings you closer to the customs and craftsmanship that continue to shape life in Chettinad.

Facade view of Chidambara Vilas - A Luxury Chettinad Heritage Resort, surrounded by greenery and pink skies.

Karthigai Deepam is a festival best understood through its simplest rituals: clay lamps lit at dusk, prayers offered at home, and an ancient story of Shiva as an endless column of light. On Tuesday, 24 November 2026, these traditions will illuminate doorways and courtyards across Tamil Nadu, bringing families together in the warm glow of countless little flames.

In Chettinad, the celebration unfolds amid traditional mansions, where lamps trace the edges of courtyards and verandahs. Spend the evening here, and experience a festival that asks for little beyond a flame, a prayer, and a moment to appreciate the traditions that endure.

FAQs


When is Karthigai Deepam this year?
In 2026, the festival falls on Tuesday, 24 November, with the Karthigai nakshatram beginning at 4:32 AM. It ends at 1:55 AM the next day, so the evening of the 24th is what is observed.

Why does the date of Karthigai Deepam change every year?
The day is set by the full moon and the Krittika nakshatra together, not by a calendar date. Those 2 cycles shift against the Gregorian year, so the festival moves between November and December.

What is thrikarthika, and is it the same as Karthigai Deepam?
Thrikarthika is the Kerala name for the same occasion, where it honours Parvati, and Thirukarthigai is the Tamil variant. All 3 spellings point to the same festival falling in the Tamil month of Karthigai.

What is the significance of Karthigai Deepam?
Karthigai Deepam symbolises the triumph of light over darkness and commemorates Lord Shiva's appearance as an endless column of light. Devotees light rows of clay oil lamps, offer prayers, and observe traditional rituals, celebrating faith, family, and the divine light that guides them.

What is the story behind Karthigai Deepam?
The Shiva Purana tells of Brahma and Vishnu disputing supremacy until a column of fire appeared. Neither of them could find its ends, and Brahma’s false claim earned him a curse.

How is Karthigai Deepam different from Deepavali?
The difference is the Shaivite focus and the timing, which is fixed to the Krittika constellation. It runs on rows of clay lamps, and that star timing is what sets the 2 occasions apart.

What is a Karthigai Vilakku?
A Karthigai Vilakku is a traditional clay oil lamp lit during Karthigai Deepam. Filled with oil and fitted with a cotton wick, these lamps are arranged in rows along doorways, verandahs, and courtyards to symbolise the triumph of light over darkness.

What food is made for Karthigai Deepam?
Traditional Karthigai Deepam foods include pori urundai (puffed rice balls with jaggery), nei appam (sweet rice fritters), adhirasam (rice flour and jaggery discs), vella seedai (sweet, crunchy dumplings), and karthigai addai (savoury lentil pancakes). These festive dishes are prepared at home and enjoyed after the evening rituals.

How is Karthigai Deepam celebrated in Chettinad?
The 9 Chettiar clan temples mark the day, and Pillayarpatti temple lists it among its own festivals. In the mansions themselves, the lamps run along the verandahs, the parapets, and the courtyard.

Where should I stay in Chettinad for Karthigai Deepam?
Stay at Chidambara Vilas, a restored Chettiar mansion in Pudukkottai, to experience Karthigai Deepam amid Chettinad’s architectural heritage. Explore the region’s clan temples, enjoy traditional Chettinad cuisine, and join heritage walks and cookery classes during your stay.

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