Chaiti Chhath vs Kartik Chhath: Why One Fills the Ghats
Stand on the same bend of the Burhi Gandak twice in one year and you would not swear it was the same river.
In November you cannot find the water for the people. Bamboo poles go up in the shallows, the mud is swept and watered down, and by the afternoon of the main day the bank is a solid field of colour thousands of families deep, with incense smoke going sideways in the river wind.
In April, at that same bend, at a festival with the same name and the same rules, there may be eleven women standing in the water.
Both of those are Chhath. Most people outside Bihar have only ever heard of one.
Two Chhaths, not one festival and one rehearsal
Chhath is kept twice a year, and the spring one is not a lesser copy. The rituals are identical, the fast is identical, and the families who keep it will tell you the vow is identical. What differs is how many people are standing next to you.
Kartik Chhath is the one the country knows. It runs from Kartik Shukla Chaturthi to Kartik Shukla Saptami, and in 2026 that falls on Friday 13 November through Monday 16 November, with the great evening arghya on Sunday 15 November.
Chaiti Chhath is the spring twin, kept in the month of Chaitra on the matching tithis. The next one runs 10 to 13 April 2027, with its evening arghya on Monday 12 April.
Same four days in the same order, either time:
| Day | Name | What happens |
|---|---|---|
| 1 | Nahay Khay | A bath, the house and the path to the ghat scrubbed, then a sattvik meal of lauki and rice - the last proper food |
| 2 | Kharna | A day without a drop of water, broken after dark with gur ke kheer and roti |
| 3 | Sandhya Arghya | Thekua and fruit carried to the river, offerings made standing in the water to the setting sun |
| 4 | Usha Arghya | The same offering at dawn to the rising sun, and only then is the fast broken |
The hard part is the stretch between the second evening and the fourth dawn: roughly thirty-six hours with no food and no water at all, a good deal of it spent standing waist-deep. The prasad is thekua, wheat flour kneaded with jaggery and ghee, pressed by hand and fried. The prayers go to Surya, and alongside him to Chhathi Maiya, described as the sixth form of Prakriti and the sun's own sister.
So why does November drown the ghat and April not?
The usual explanation is the heat, and it is not wrong. Chaiti Chhath arrives as the hot weather is climbing, and people who have kept both will tell you plainly that the spring fast is the harder of the two. Thirty-six hours without water in Chaitra is a different proposition from thirty-six hours without water in Kartik. It also sits close to other spring festivals, which keeps it quieter and more domestic.
But stand in a field in Begusarai instead of on the ghat and a simpler answer shows up.
Mid-November is the one slack hinge in the whole farming year here. The kharif paddy is cut and in. The rabi sowing - wheat, the main winter crop - goes in around the middle of November, after the monsoon is finished with us. Kartik Chhath lands precisely in that gap: the grain of one season is in the house, the labour of the next has not started, and there is money, and new rice, and every son who works outside has come home anyway for the festival season.
April is the exact opposite. Rabi harvesting begins in April and May. Chaiti Chhath falls on the busiest, hottest working weeks of the year, when a household cannot spare four days and two of its adults to a riverbank. The heat explains why the fast is harder. The harvest explains why the ghat is empty.
Nobody chose the dates for that reason - the tithis are the tithis. But a festival only becomes enormous when the calendar leaves room for it to be enormous, and in Bihar only one of these two ever had that room.
Which one should you keep?
If you keep one, keep Kartik. That is not a judgement about merit, it is a judgement about support. The vow is severe, and in November the whole apparatus that carries it exists around you - the ghat is cleaned by the municipality, the neighbours are cooking thekua on the same afternoon, somebody will physically hold your arm when you go down the slope at four in the morning. In April you will be doing a thirty-six-hour waterless fast in the heat with almost none of that.
Keep Chaiti if the vow is specifically yours - taken for a particular reason, a recovery, a birth, a thing asked for and granted. That is who is actually standing in the water in April, and it is why the April ghat, for all that there are eleven people on it, is often the more affecting of the two to see. Nobody is there because the street is there.
And do not start with either one as an experiment. This is a fast that older women in the family prepare for, and the honest advice from anyone who has watched it up close is to carry the baskets and cook for someone else's vow first.
What the river does afterwards
The Kartik one does not simply stop. In Mithila the days between the last arghya and Kartik Purnima belong to Sama Chakeva, with its clay birds and its night songs - so the sun is put down and the next observance picks up almost without a gap. These are the same districts that will call the moon down onto a banana leaf and feed it at Chaurchan, which tells you something about how the sky is treated here: not as scenery, but as a party to the arrangement.
We roll incense in Samastipur, two districts along from that bend of the river, and the week before Kartik Chhath is the only week of the year when the whole town smells of wheat and jaggery frying rather than of anything we make.
If you are planning for 13 to 16 November, the thing worth knowing is that the fast is not the point of the festival. Standing in cold water at dawn with your family on the bank behind you is the point. The fast is only what makes you take it seriously.
