Why Is Karwa Chauth Celebrated? Story and 2026 Moonrise Time

At some point after eight on Thursday evening, millions of women across North India will climb onto rooftops with a lit diya, a pot of water and a sieve. They have not eaten or drunk anything since before sunrise. When the Moon finally clears the rooftops, they look at it through the sieve, then turn the sieve toward their husband's face, and only then take their first sip of water of the day.

That moment is Karwa Chauth. This guide explains why it is celebrated, where the stories behind it come from, what each ritual of the day means, and exactly when the Moon rises in your city on 29 October 2026, or on 28 October if you live in the United States or Canada.

Karwa Chauth 2026 at a glance

Why is Karwa Chauth celebrated?

Karwa Chauth is celebrated as a day on which married women fast from sunrise until moonrise and pray for the long life and wellbeing of their husbands. The fast is kept without food or water, and it is broken only after the Moon has been seen and offered water. Tradition ties it to stories of wives whose devotion protected their husbands from death, and in North India it has also become a day that celebrates the marriage itself.

What "Karwa" and "Chauth" mean

Karwa is a small earthen pot with a spout, the vessel used to offer water to the Moon in the evening. Chauth means fourth: the festival falls on the fourth day, Chaturthi, of the waning Moon in the month of Kartik, as North Indian calendars count it. In the older Sanskrit texts the same day is called Karaka Chaturthi, karaka also meaning a water pot.

So the name describes the festival exactly: the fourth lunar day, observed with a pot of water.

The stories behind the fast

There is no single founding text for Karwa Chauth. Its meaning is carried by stories, told aloud by an older woman during the evening puja, and they differ from family to family. Three are told most often.

Veeravati and the false Moon. A queen named Veeravati, the only sister of seven brothers, kept her first Karwa Chauth at her parents' home. By evening she was faint with hunger and thirst. Unable to watch her suffer, her brothers lit a fire behind a hill (in other versions, held up a mirror in a pipal tree) and told her the Moon had risen. She broke her fast, and the news came at once that her husband had died. In most tellings a goddess, Parvati or Indrani, tells her the fast was broken falsely, and Veeravati keeps it again, faithfully, until her husband is restored. This is the story that explains why the Moon is checked with care before the fast ends, and why the sieve matters.

Karva and the crocodile. A devoted wife named Karva saw a crocodile seize her husband while he bathed in a river. She bound the crocodile with cotton thread and went to Yama, the god of death, demanding that the crocodile be punished and her husband spared, and threatening to curse Yama himself if he refused. Yama gave way. The festival, in this telling, carries her name.

Draupadi's fast. In a story linked to the Mahabharata, Arjuna went away to the Nilgiri hills for penance and the other Pandavas fell into difficulty. Krishna reminded Draupadi of how Parvati had kept such a fast for Shiva, and Draupadi kept it too, after which the troubles lifted.

What the three stories share is the thing the day is about: a wife's resolve standing between her husband and misfortune.

Where the festival may have begun

Historians have no documented starting point, but three explanations are offered, and they are not exclusive:

• The harvest. Karwa Chauth falls at the start of the rabi sowing season in the wheat-growing North West, when large earthen pots stored the grain. A fast and a prayer at the sowing of the crop would fit that calendar.
• Men away at war. In Rajasthan and Punjab, where men often left on long military campaigns, the fast is said to have begun as a prayer for their safe return.
• Women's friendship. A bride married into a distant village could form a lifelong bond with a woman there, a kangan-saheli or dharam-behen, and some see the festival as a celebration of that bond, which explains why so much of the day is spent among women.

The day, ritual by ritual

Sargi, before sunrise. The fast begins with a pre-dawn meal, traditionally sent or given by the mother-in-law: fruit, dry fruit, sweets, and in Punjab almost always feni, a fine vermicelli cooked in milk. It is the last food until moonrise.

The fast. From sunrise the fast is usually nirjala, without water as well as food. Many women who cannot keep a waterless fast for health reasons keep a lighter one; the tradition has always allowed for that, and pregnant women and anyone with a medical condition should follow a doctor's advice first.

The evening puja. Women gather, often dressed in red or bridal colours, with mehndi on their hands. An older woman or a priest tells the vrat katha, the stories above. In Punjab the women sit in a circle and pass their thalis around while singing, in rounds called feris.

Baya and the karwa. A gift for the mother-in-law, the baya, is set aside: sweets, dry fruit, clothes or jewellery. In Uttar Pradesh and Rajasthan women exchange painted karwas filled with bangles, sweets and small gifts.

The sieve and the Moon. When the Moon rises, the woman looks at it through a chalni, a sieve, often with a diya placed on it. She offers water to the Moon from the karwa, then looks through the same sieve at her husband. The sieve is usually explained by the Veeravati story: the Moon is looked at carefully, and filtered, so that no false Moon can end the fast again.

Breaking the fast. The husband gives his wife her first sip of water and the first bite of food, and the fast is over.

Karwa Chauth 2026: date and tithi

The festival is observed on the day when Krishna Chaturthi is in force at moonrise, because the fast is broken at the sight of the Moon. In 2026 the Chaturthi runs from 1:07 am to 10:10 pm IST on 29 October, so every Indian city sees its Moon rise during Chaturthi on Thursday 29 October.

When the Moon rises over Delhi that evening, it stands at the end of Vrishabh, the sign of its exaltation, in the nakshatra Mrigashira.

Moonrise time in Indian cities, 29 October 2026

All times are Indian Standard Time. The Moon rises earliest in the east and latest in the west and south.

Moonrise outside India

Here the date matters as much as the time. The Chaturthi begins at 1:07 am IST on 29 October, which in North America is still the afternoon of 28 October: 3:37 pm in New York, 12:37 pm in San Francisco. So the Moon that rises over the US and Canada on the evening of Wednesday 28 October is already a Chaturthi Moon, and by the next evening the Chaturthi has ended. In the US and Canada, Karwa Chauth 2026 is therefore kept on Wednesday 28 October.

The UK is the interesting case. In London the Chaturthi begins after moonrise on the 28th and ends before moonrise on the 29th, so it touches neither Moon. British calendars keep the fast on Thursday 29 October, the day the Chaturthi covers almost entirely, and the UK has been on GMT since the clocks went back on 25 October.

Why the times differ, and what to do if it is cloudy

The Moon rises over each city as the Earth turns that city toward it, so the east sees it first: Kolkata about half an hour before Delhi, Delhi about forty minutes before Mumbai. The times above are computed for each city's coordinates with the Swiss Ephemeris, for the moment the upper edge of the Moon clears a flat horizon. Buildings, hills and haze delay the moment you actually see it, often by ten or twenty minutes, and other calendars may differ from ours by a minute or two.

If clouds hide the Moon, families follow their own custom. Many wait a while; many break the fast at the listed moonrise time by offering water toward the Moon's direction; some follow a relative in another city who can see it. The fast is about intention, and no tradition asks anyone to keep it into the night at the cost of their health.

For any other city, open the Hindu calendar, choose your location and tap 29 October: the day's panchanga shows the moonrise for that place.

Common questions

Why do women look at the Moon through a sieve on Karwa Chauth? The custom is explained by the story of Veeravati, whose brothers ended her fast with a false Moon. Looking at the real Moon through a sieve, and then at the husband through the same sieve, marks the fast as broken properly, by the true Moon. Many families also see the sieve's many holes as many blessings.

Can unmarried women keep the Karwa Chauth fast? Yes. In many North Indian cities unmarried women keep it, either for a fiancé or as a prayer for a good husband. Some families follow a lighter form for them, breaking the fast at the sight of the stars rather than the Moon. It is a family custom, not a fixed rule.

Can husbands keep the fast too? More and more do, fasting alongside their wives as a sign of partnership. The tradition does not require it, and it does not forbid it.

What is sargi and who gives it? Sargi is the meal eaten before sunrise to begin the fast. Traditionally the mother-in-law sends or gives it; feni, fruit, dry fruit and sweets are the usual contents.

When is Karwa Chauth 2027? In 2027 Karwa Chauth falls on Monday, 18 October in India, when Krishna Chaturthi is in force at moonrise.

What comes next in the festival season? Diwali and the days around it come within the next fortnight, and Chhath follows in November. Our Diwali 2026 guide and Chhath Puja 2026 calendar give the dates and city timings.

Sources and calculation notes

• Moonrise times and the Chaturthi interval: calculated with the Swiss Ephemeris for each city's coordinates, upper limb of the Moon at a sea-level horizon with standard refraction, in each city's local time on the date shown.
• Customs, legends and regional practice: Karva Chauth, Wikipedia, and the Karwa Chauth legends collected by Drik Panchang. The stories exist in many versions; those given here are the most widely told.